| |
CX2SA > SATDIG 17.07.15 02:36l 1373 Lines 51466 Bytes #999 (0) @ WW
BID : AMSATBB10208
Read: GUEST
Subj: AMSAT-BB-digest V10 208
Path: IW8PGT<IZ3LSV<IW0QNL<JH4XSY<JE7YGF<7M3TJZ<CX2SA
Sent: 150717/0033Z @:CX2SA.SAL.URY.SOAM #:24363 [Salto] FBB7.00e $:AMSATBB10208
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. ao7b cw beacon (KERRY LA*DUKE)
2. Re: ao7b cw beacon (Paul Stoetzer)
3. Re: PSAT PSK31 experimental software (David W0DHB)
4. Re: SO-50 (Neil Smith)
5. Re: SO-50 (Rick Tejera)
6. Re: SO-50 (Bryan Green)
7. Re: PSAT PSK31 experimental software (Joe)
8. Re: PSAT PSK31 experimental software (David W0DHB)
9. Re: PSAT PSK31 experimental software (BRICsat too)
(Robert Bruninga)
----------------------------------------------------------------------
Message: 1
Date: Thu, 16 Jul 2015 16:28:23 -0600
From: KERRY LA*DUKE <kladuke1144@xxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ao7b cw beacon
Message-ID: <SNT151-W28C51BD0745EAF6162756BBC990@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
I received good cw beacon from ao7 in mode b at around 22:20Z July 16. The
beacon shut off during the pass and the satellite appeared to shut off also.
HI HI 180 180 180 180 252 252 252 252 324 324 324 324 496 496 496 496 568
568 568 568 696 696 696 696
The beacon repeated several times before shutting off.
------------------------------
Message: 2
Date: Thu, 16 Jul 2015 18:32:34 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: "KERRY LA*DUKE" <kladuke1144@xxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] ao7b cw beacon
Message-ID:
<CABzOSOpb1MWsOwR8Vd3x74qN09U9Tn1N1On2+Of3CQzb=AKdNA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I have heard it a couple of times recently myself.
Unfortunately, the telemetry channel 6D value shows that the telemetry is
not valid. That value must be 649, 650, or 651.
73,
Paul, N8HM
On Thu, Jul 16, 2015 at 6:28 PM, KERRY LA*DUKE <kladuke1144@xxx.xxx> wrote:
> I received good cw beacon from ao7 in mode b at around 22:20Z July 16.
> The beacon shut off during the pass and the satellite appeared to shut off
> also.
>
>
> HI HI 180 180 180 180 252 252 252 252 324 324 324 324 496 496 496 496
> 568 568 568 568 696 696 696 696
>
>
> The beacon repeated several times before shutting off.
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 3
Date: Thu, 16 Jul 2015 16:43:54 -0600
From: "David W0DHB" <dave@xxxxx.xxx>
To: "'Joe'" <nss@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
Message-ID: <002f01d0c018$e54b9bb0$afe2d310$@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Thanks Joe I forgot BB would wrap line.
This one works also
https://www.dropbox.com/s/r6ywkczcf95o3f2/NO84.wav?dl=0
Base equipment is
10m SSB Transmitter with the ability for TX audio being fed by Computer
sound card.
70cm FM RX / antenna system capable of copying satellite downlink and able
to feed RX audio to Computer.
Computer with Windows/Mac , DopplerSQF software and software that will demod
PSK31 (Fldigi,Digipan DM780 to name a few)
Software to do downlink doppler tuning is very useful, but not required.
Dave W0DHB
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
Sent: Thursday, July 16, 2015 4:24 PM
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
hEDRE i FIXED THAT url ALSO,
*http://tinyurl.com/q3np2sm
Joe
*
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 7/16/2015 2:57 PM, David W0DHB wrote:
> Andy
>
> Here is a recording of the 1930 pass of NO-84
> https://www.dropbox.com/s/2qtb5d2cm3ktrr0/FM%20435.359944MHz%20%5B12k%
> 5D%207
> -16-2015%2019%2033%2052.wav?dl=0
>
> Bob KO6TZ and I had a successful QSO. My audio was set at 1500 Uplink
> frequency of 28.119700 MHz .
>
> The signals seemed to be stable, decoding at my end (DM780 ) was not
> stellar, I'm running the recording through fldigi, MixW and Digipan to
> see if it's any better.
>
> Dave W0DHB
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
> W0DHB
> Sent: Thursday, July 16, 2015 8:41 AM
> To: 'aflowers@xxxxxxxxxxx.xxxxx amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>
> Hey Andy
>
> The ability to select soundcard would be helpful. In my setup TX audio
> is fed by a virtual audio cable set to match the 48K sample rate that
> DopplerPSK is using.
> Folks using windows should set the recording device side of their
> soundcard to a 48K sample rate (it usually defaults to 44.1K).
>
> You are correct that the uplink frequency is high, I apply a -300 Hz
> calibration offset.
>
> Thanks for all your work on this.
>
> Dave W0DHB
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
> aflowers@xxxxxxxxxxx.xxx
> Sent: Thursday, July 16, 2015 6:29 AM
> To: amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>
> Bob, Dave;
> That's great. I'm interested in how well it tracks when the satellite
> is at a very high elevation and the Doppler is >3 Hz/s. I suspect the
> error is going to be mostly in the estimates of the orbital elements, but
we'll see.
> I will try to join you on the pass when I can cobble together an
> uplink and a downlink in the same place--probably next week sometime
> after I get back from vacation.
>
> I think you should be able to share a sound device on most OS's, but I
> have not tried. I assumed it would work on modern Windows OS's
> because of the hardware abstraction. The program appears to run fine
> on OSX, but I have not tried running CocoaModem or some other software
> next to it. Ultimately I could also add a demodulator to the program
> itself, but that will take some work....I know several hams have
> separate sound cards for radio stuff, so I may need to add a device
> selection option in case the system default (or whatever Java picks as the
default) isn't what you want.
>
> The audio frequency displayed in DopplerPSK is the audio frequency
> being send to the radio, not what you should expect in the passband of
> your downlink receiver. The LO on PSAT is apparently a bit below 28120
> KHz, so if your radio was tuned to 28120 USB (suppressed carrier
> frequency) you would expect to be a bit higher than 2000Hz in the FM
passband:
>
> http://www.urel.feec.vutbr.cz/esl/files/Projects/PSAT/P%20sat%20transp
> onder%
> 20WEB%20spec02.htm
>
> In general, if you want to be lower in the passband I would lower your
> transmitter RF frequency rather than the audio frequency going to the
> transmitter. The reason being that if you have any non-linearity in
> the audio chain you don't end up transmitting a harmonic higher in the
> band that might bother someone else. Of course, you can probably see
> if this is an issue or not since the satellite also serves as a crude
> signal analyzer :-) I chose 2000 Hz as a center since at maximum
> Doppler of around 700 Hz, the
> ~2700 Hz tone should go through the transmitter's IF filter without
> too much attenuation while keeping all the third harmonics and most of
> the time the second harmonic above the cutoff of a 3 KHz IF filter.
> Every radio is a bit different, however. You may find that the 1500Hz
> sweep in the program shows you all your passband ripple in your IF
> filter :-)
>
> Since it works, I'm more motivated to improve the ergonomics of the
> interface. Much of that depends on the unique operating practices of
> satellite operation.
>
> Andy K0SM/2
>
>
>
>
> On Thursday, July 16, 2015 12:31 AM, KO6TZ Bob
> <my.callsign@xxxxxxx.xxx>
> wrote:
>
>
> The software worked great !!! Produced a straight line on the
> waterfall for the down link.
>
> As expected, I was alone on the pass, so no opportunity for a contact.
>
> I was using digi-pan for the RX, my signal was at around 2200Hz..
> Probably an indication the oscillator in my radio is off a bit. I
> think I will lower the frequency from 2000 to about 1600. That will
> put my signal lower in the VF pass band.
>
> I like the program. Had good copy.
>
> THANKS.....
>
>
> BOB KO6TZ
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect the
official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
>
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Thu, 16 Jul 2015 16:25:02 -0700
From: Neil Smith <n5eil@xx.xxx>
To: Bryan Green <bryan@xxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SO-50
Message-ID: <04BEC88F-1B29-41BA-A4E7-CA0362025FBA@xx.xxx>
Content-Type: text/plain; charset=utf-8
So is it good practice on a west to east approach when the bird breaks
horizon and nothing is heard for the first 10 or so degrees in the pass to
go ahead and attempt to turn it on?
-Neil
> On Jul 16, 2015, at 3:00 PM, Bryan Green <bryan@xxxxx.xxx> wrote:
>
> I've turned it on plenty of times from a western approach. Usually it
takes a good 5 second burst of carrier at 74.4 Hz. The only way to tell is
to switch back to 67 Hz and send a carrier. If you hear quieting, it's on.
>
> Bryan KL7CN/W6
>
> Sent from my iPhone
>
>> On Jul 16, 2015, at 14:50, Neil Smith <n5eil@xx.xxx> wrote:
>>
>> Was anyone able to work the 1902 UTC west coast pass? It was coming in
from the southeast over the pacific, so I figured it might not be turned on,
but I expected to hear some traffic on it by the end of the pass. When it?s
off and needs the 74.4hz 2 second tone to reset the timer does so-50 give
any feedback to indicate that?s it?s now on?
>>
>> -Neil N5EIL
>>
>>
>>> On Jul 16, 2015, at 6:40 AM, Bill Dillon <bill.g.dillon@xxxxx.xxx> wrote:
>>>
>>> I had no trouble on the following 05:15-05:30 UT pass.
>>>
>>> 73,
>>>
>>> --Bill, KG5FQX
>>>
>>> On Wed, Jul 15, 2015 at 10:45 PM, Lee Ernstrom <lee.ernstrom@xxxxxxxx.xxx>
>>> wrote:
>>>
>>>> On the 0330-0341 pass of SO-50 this evening, Wednesday, I couldn't get it
>>>> to come to life. Was it just me? Did I lose my pre-amp or was there
>>>> something wrong with the sat?
>>>>
>>>> Lee (Doc) Ernstrom
>>>> Syracuse, Utah DN-31
>>>>
>>>> Sent from my iPad
>>>> _______________________________________________
>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>>> to all interested persons worldwide without requiring membership.
Opinions
>>>> expressed
>>>> are solely those of the author, and do not reflect the official views of
>>>> AMSAT-NA.
>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>> _______________________________________________
>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>> to all interested persons worldwide without requiring membership.
Opinions expressed
>>> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
Opinions expressed
>> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Thu, 16 Jul 2015 16:31:00 -0700
From: Rick Tejera <saguaroastro@xxx.xxx>
To: Neil Smith <n5eil@xx.xxx>, Bryan Green <bryan@xxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SO-50
Message-ID: <xythr517u9gaxw8rs600r38e.1437089460662@xxxxx.xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Regardless of the pass, when it gets yo about 5 degrees, I send the on tone,
even if I hear other stations (during a break) ?this way I know I have at
least 10 minutes before it turns off.
Rick Tejera K7TEJSaguaroAstro@xxx.xxxxxxxxxxxxxxx
-------- Original message --------
From: Neil Smith <n5eil@xx.xxx>
Date: 07/16/2015 16:25 (GMT-07:00)
To: Bryan Green <bryan@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] SO-50
So is it good practice on a west to east approach when the bird breaks
horizon and nothing is heard for the first 10 or so degrees in the pass to
go ahead and attempt to turn it on?
-Neil
> On Jul 16, 2015, at 3:00 PM, Bryan Green <bryan@xxxxx.xxx> wrote:
>
> I've turned it on plenty of times from a western approach. Usually it
takes a good 5 second burst of carrier at 74.4 Hz. The only way to tell is
to switch back to 67 Hz and send a carrier. If you hear quieting, it's on.
>
> Bryan KL7CN/W6
>
> Sent from my iPhone
>
>> On Jul 16, 2015, at 14:50, Neil Smith <n5eil@xx.xxx> wrote:
>>
>> Was anyone able to work the 1902 UTC west coast pass? It was coming in
from the southeast over the pacific, so I figured it might not be turned on,
but I expected to hear some traffic on it by the end of the pass. When it?s
off and needs the 74.4hz 2 second tone to reset the timer does so-50 give
any feedback to indicate that?s it?s now on?
>>
>> -Neil N5EIL
>>
>>
>>> On Jul 16, 2015, at 6:40 AM, Bill Dillon <bill.g.dillon@xxxxx.xxx> wrote:
>>>
>>> I had no trouble on the following 05:15-05:30 UT pass.
>>>
>>> 73,
>>>
>>> --Bill, KG5FQX
>>>
>>> On Wed, Jul 15, 2015 at 10:45 PM, Lee Ernstrom <lee.ernstrom@xxxxxxxx.xxx>
>>> wrote:
>>>
>>>> On the 0330-0341 pass of SO-50 this evening, Wednesday, I couldn't get it
>>>> to come to life.? Was it just me?? Did I lose my pre-amp or was there
>>>> something wrong with the sat?
>>>>
>>>> Lee (Doc) Ernstrom
>>>> Syracuse, Utah DN-31
>>>>
>>>> Sent from my iPad
>>>> _______________________________________________
>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>>> to all interested persons worldwide without requiring membership.
Opinions
>>>> expressed
>>>> are solely those of the author, and do not reflect the official views of
>>>> AMSAT-NA.
>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>> _______________________________________________
>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>> to all interested persons worldwide without requiring membership.
Opinions expressed
>>> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
Opinions expressed
>> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Thu, 16 Jul 2015 16:47:07 -0700
From: Bryan Green <bryan@xxxxx.xxx>
To: Neil Smith <n5eil@xx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SO-50
Message-ID: <5E84D1DD-A1CC-4D32-970D-1B9862316EA7@xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Yes. I always send the tone when it comes from the west.
On Jul 16, 2015, at 16:25, Neil Smith <n5eil@xx.xxx> wrote:
So is it good practice on a west to east approach when the bird breaks
horizon and nothing is heard for the first 10 or so degrees in the pass to
go ahead and attempt to turn it on?
-Neil
> On Jul 16, 2015, at 3:00 PM, Bryan Green <bryan@xxxxx.xxx> wrote:
>
> I've turned it on plenty of times from a western approach. Usually it
takes a good 5 second burst of carrier at 74.4 Hz. The only way to tell is
to switch back to 67 Hz and send a carrier. If you hear quieting, it's on.
>
> Bryan KL7CN/W6
>
> Sent from my iPhone
>
>> On Jul 16, 2015, at 14:50, Neil Smith <n5eil@xx.xxx> wrote:
>>
>> Was anyone able to work the 1902 UTC west coast pass? It was coming in
from the southeast over the pacific, so I figured it might not be turned on,
but I expected to hear some traffic on it by the end of the pass. When it?s
off and needs the 74.4hz 2 second tone to reset the timer does so-50 give
any feedback to indicate that?s it?s now on?
>>
>> -Neil N5EIL
>>
>>
>>> On Jul 16, 2015, at 6:40 AM, Bill Dillon <bill.g.dillon@xxxxx.xxx> wrote:
>>>
>>> I had no trouble on the following 05:15-05:30 UT pass.
>>>
>>> 73,
>>>
>>> --Bill, KG5FQX
>>>
>>> On Wed, Jul 15, 2015 at 10:45 PM, Lee Ernstrom <lee.ernstrom@xxxxxxxx.xxx>
>>> wrote:
>>>
>>>> On the 0330-0341 pass of SO-50 this evening, Wednesday, I couldn't get it
>>>> to come to life. Was it just me? Did I lose my pre-amp or was there
>>>> something wrong with the sat?
>>>>
>>>> Lee (Doc) Ernstrom
>>>> Syracuse, Utah DN-31
>>>>
>>>> Sent from my iPad
>>>> _______________________________________________
>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>>> to all interested persons worldwide without requiring membership.
Opinions
>>>> expressed
>>>> are solely those of the author, and do not reflect the official views of
>>>> AMSAT-NA.
>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>> _______________________________________________
>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>> to all interested persons worldwide without requiring membership.
Opinions expressed
>>> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
Opinions expressed
>> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Thu, 16 Jul 2015 19:03:00 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
Message-ID: <55A84634.9080908@xxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Thats what I was most interested in the antennas. describe them...
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 7/16/2015 5:43 PM, David W0DHB wrote:
> Thanks Joe I forgot BB would wrap line.
> This one works also
> https://www.dropbox.com/s/r6ywkczcf95o3f2/NO84.wav?dl=0
>
> Base equipment is
> 10m SSB Transmitter with the ability for TX audio being fed by Computer
> sound card.
> 70cm FM RX / antenna system capable of copying satellite downlink and able
> to feed RX audio to Computer.
> Computer with Windows/Mac , DopplerSQF software and software that will demod
> PSK31 (Fldigi,Digipan DM780 to name a few)
>
> Software to do downlink doppler tuning is very useful, but not required.
>
> Dave W0DHB
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
> Sent: Thursday, July 16, 2015 4:24 PM
> To: amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>
> hEDRE i FIXED THAT url ALSO,
>
> *http://tinyurl.com/q3np2sm
>
> Joe
> *
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> On 7/16/2015 2:57 PM, David W0DHB wrote:
>> Andy
>>
>> Here is a recording of the 1930 pass of NO-84
>> https://www.dropbox.com/s/2qtb5d2cm3ktrr0/FM%20435.359944MHz%20%5B12k%
>> 5D%207
>> -16-2015%2019%2033%2052.wav?dl=0
>>
>> Bob KO6TZ and I had a successful QSO. My audio was set at 1500 Uplink
>> frequency of 28.119700 MHz .
>>
>> The signals seemed to be stable, decoding at my end (DM780 ) was not
>> stellar, I'm running the recording through fldigi, MixW and Digipan to
>> see if it's any better.
>>
>> Dave W0DHB
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
>> W0DHB
>> Sent: Thursday, July 16, 2015 8:41 AM
>> To: 'aflowers@xxxxxxxxxxx.xxxxx amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>>
>> Hey Andy
>>
>> The ability to select soundcard would be helpful. In my setup TX audio
>> is fed by a virtual audio cable set to match the 48K sample rate that
>> DopplerPSK is using.
>> Folks using windows should set the recording device side of their
>> soundcard to a 48K sample rate (it usually defaults to 44.1K).
>>
>> You are correct that the uplink frequency is high, I apply a -300 Hz
>> calibration offset.
>>
>> Thanks for all your work on this.
>>
>> Dave W0DHB
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
>> aflowers@xxxxxxxxxxx.xxx
>> Sent: Thursday, July 16, 2015 6:29 AM
>> To: amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>>
>> Bob, Dave;
>> That's great. I'm interested in how well it tracks when the satellite
>> is at a very high elevation and the Doppler is >3 Hz/s. I suspect the
>> error is going to be mostly in the estimates of the orbital elements, but
> we'll see.
>> I will try to join you on the pass when I can cobble together an
>> uplink and a downlink in the same place--probably next week sometime
>> after I get back from vacation.
>>
>> I think you should be able to share a sound device on most OS's, but I
>> have not tried. I assumed it would work on modern Windows OS's
>> because of the hardware abstraction. The program appears to run fine
>> on OSX, but I have not tried running CocoaModem or some other software
>> next to it. Ultimately I could also add a demodulator to the program
>> itself, but that will take some work....I know several hams have
>> separate sound cards for radio stuff, so I may need to add a device
>> selection option in case the system default (or whatever Java picks as the
> default) isn't what you want.
>> The audio frequency displayed in DopplerPSK is the audio frequency
>> being send to the radio, not what you should expect in the passband of
>> your downlink receiver. The LO on PSAT is apparently a bit below 28120
>> KHz, so if your radio was tuned to 28120 USB (suppressed carrier
>> frequency) you would expect to be a bit higher than 2000Hz in the FM
> passband:
>> http://www.urel.feec.vutbr.cz/esl/files/Projects/PSAT/P%20sat%20transp
>> onder%
>> 20WEB%20spec02.htm
>>
>> In general, if you want to be lower in the passband I would lower your
>> transmitter RF frequency rather than the audio frequency going to the
>> transmitter. The reason being that if you have any non-linearity in
>> the audio chain you don't end up transmitting a harmonic higher in the
>> band that might bother someone else. Of course, you can probably see
>> if this is an issue or not since the satellite also serves as a crude
>> signal analyzer :-) I chose 2000 Hz as a center since at maximum
>> Doppler of around 700 Hz, the
>> ~2700 Hz tone should go through the transmitter's IF filter without
>> too much attenuation while keeping all the third harmonics and most of
>> the time the second harmonic above the cutoff of a 3 KHz IF filter.
>> Every radio is a bit different, however. You may find that the 1500Hz
>> sweep in the program shows you all your passband ripple in your IF
>> filter :-)
>>
>> Since it works, I'm more motivated to improve the ergonomics of the
>> interface. Much of that depends on the unique operating practices of
>> satellite operation.
>>
>> Andy K0SM/2
>>
>>
>>
>>
>> On Thursday, July 16, 2015 12:31 AM, KO6TZ Bob
>> <my.callsign@xxxxxxx.xxx>
>> wrote:
>>
>>
>> The software worked great !!! Produced a straight line on the
>> waterfall for the down link.
>>
>> As expected, I was alone on the pass, so no opportunity for a contact.
>>
>> I was using digi-pan for the RX, my signal was at around 2200Hz..
>> Probably an indication the oscillator in my radio is off a bit. I
>> think I will lower the frequency from 2000 to about 1600. That will
>> put my signal lower in the VF pass band.
>>
>> I like the program. Had good copy.
>>
>> THANKS.....
>>
>>
>> BOB KO6TZ
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect the
> official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to all
> interested persons worldwide without requiring membership. Opinions
> expressed are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
>
------------------------------
Message: 8
Date: Thu, 16 Jul 2015 18:26:34 -0600
From: "David W0DHB" <dave@xxxxx.xxx>
To: "'Joe'" <nss@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
Message-ID: <004801d0c027$3d0d3e40$b727bac0$@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
I'm using a GAP Challenger vertical for 10m and on 70cm an M2 30el (15h/15V)
RHCP yagi on a Yaesu G5500 az/el rotator, but a handheld Arrow or similar
antenna for 70cm would probably work fine.
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
Sent: Thursday, July 16, 2015 6:03 PM
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
Thats what I was most interested in the antennas. describe them...
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 7/16/2015 5:43 PM, David W0DHB wrote:
> Thanks Joe I forgot BB would wrap line.
> This one works also
> https://www.dropbox.com/s/r6ywkczcf95o3f2/NO84.wav?dl=0
>
> Base equipment is
> 10m SSB Transmitter with the ability for TX audio being fed by
> Computer sound card.
> 70cm FM RX / antenna system capable of copying satellite downlink and
> able to feed RX audio to Computer.
> Computer with Windows/Mac , DopplerSQF software and software that will
> demod
> PSK31 (Fldigi,Digipan DM780 to name a few)
>
> Software to do downlink doppler tuning is very useful, but not required.
>
> Dave W0DHB
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
> Sent: Thursday, July 16, 2015 4:24 PM
> To: amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>
> hEDRE i FIXED THAT url ALSO,
>
> *http://tinyurl.com/q3np2sm
>
> Joe
> *
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> On 7/16/2015 2:57 PM, David W0DHB wrote:
>> Andy
>>
>> Here is a recording of the 1930 pass of NO-84
>> https://www.dropbox.com/s/2qtb5d2cm3ktrr0/FM%20435.359944MHz%20%5B12k
>> %
>> 5D%207
>> -16-2015%2019%2033%2052.wav?dl=0
>>
>> Bob KO6TZ and I had a successful QSO. My audio was set at 1500 Uplink
>> frequency of 28.119700 MHz .
>>
>> The signals seemed to be stable, decoding at my end (DM780 ) was not
>> stellar, I'm running the recording through fldigi, MixW and Digipan
>> to see if it's any better.
>>
>> Dave W0DHB
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
>> W0DHB
>> Sent: Thursday, July 16, 2015 8:41 AM
>> To: 'aflowers@xxxxxxxxxxx.xxxxx amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>>
>> Hey Andy
>>
>> The ability to select soundcard would be helpful. In my setup TX
>> audio is fed by a virtual audio cable set to match the 48K sample
>> rate that DopplerPSK is using.
>> Folks using windows should set the recording device side of their
>> soundcard to a 48K sample rate (it usually defaults to 44.1K).
>>
>> You are correct that the uplink frequency is high, I apply a -300 Hz
>> calibration offset.
>>
>> Thanks for all your work on this.
>>
>> Dave W0DHB
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
>> aflowers@xxxxxxxxxxx.xxx
>> Sent: Thursday, July 16, 2015 6:29 AM
>> To: amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>>
>> Bob, Dave;
>> That's great. I'm interested in how well it tracks when the
>> satellite is at a very high elevation and the Doppler is >3 Hz/s. I
>> suspect the error is going to be mostly in the estimates of the
>> orbital elements, but
> we'll see.
>> I will try to join you on the pass when I can cobble together an
>> uplink and a downlink in the same place--probably next week sometime
>> after I get back from vacation.
>>
>> I think you should be able to share a sound device on most OS's, but
>> I have not tried. I assumed it would work on modern Windows OS's
>> because of the hardware abstraction. The program appears to run fine
>> on OSX, but I have not tried running CocoaModem or some other
>> software next to it. Ultimately I could also add a demodulator to
>> the program itself, but that will take some work....I know several
>> hams have separate sound cards for radio stuff, so I may need to add
>> a device selection option in case the system default (or whatever
>> Java picks as the
> default) isn't what you want.
>> The audio frequency displayed in DopplerPSK is the audio frequency
>> being send to the radio, not what you should expect in the passband
>> of your downlink receiver. The LO on PSAT is apparently a bit below
>> 28120 KHz, so if your radio was tuned to 28120 USB (suppressed
>> carrier
>> frequency) you would expect to be a bit higher than 2000Hz in the FM
> passband:
>> http://www.urel.feec.vutbr.cz/esl/files/Projects/PSAT/P%20sat%20trans
>> p
>> onder%
>> 20WEB%20spec02.htm
>>
>> In general, if you want to be lower in the passband I would lower
>> your transmitter RF frequency rather than the audio frequency going
>> to the transmitter. The reason being that if you have any
>> non-linearity in the audio chain you don't end up transmitting a
>> harmonic higher in the band that might bother someone else. Of
>> course, you can probably see if this is an issue or not since the
>> satellite also serves as a crude signal analyzer :-) I chose 2000 Hz
>> as a center since at maximum Doppler of around 700 Hz, the
>> ~2700 Hz tone should go through the transmitter's IF filter without
>> too much attenuation while keeping all the third harmonics and most
>> of the time the second harmonic above the cutoff of a 3 KHz IF filter.
>> Every radio is a bit different, however. You may find that the
>> 1500Hz sweep in the program shows you all your passband ripple in
>> your IF filter :-)
>>
>> Since it works, I'm more motivated to improve the ergonomics of the
>> interface. Much of that depends on the unique operating practices of
>> satellite operation.
>>
>> Andy K0SM/2
>>
>>
>>
>>
>> On Thursday, July 16, 2015 12:31 AM, KO6TZ Bob
>> <my.callsign@xxxxxxx.xxx>
>> wrote:
>>
>>
>> The software worked great !!! Produced a straight line on the
>> waterfall for the down link.
>>
>> As expected, I was alone on the pass, so no opportunity for a contact.
>>
>> I was using digi-pan for the RX, my signal was at around 2200Hz..
>> Probably an indication the oscillator in my radio is off a bit. I
>> think I will lower the frequency from 2000 to about 1600. That will
>> put my signal lower in the VF pass band.
>>
>> I like the program. Had good copy.
>>
>> THANKS.....
>>
>>
>> BOB KO6TZ
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the
> official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect the
official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
>
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Thu, 16 Jul 2015 20:31:38 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software (BRICsat too)
Message-ID: <051c8582d5da3b4ca15b4571a3eaf8d3@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Remember to TEST your 10m PSK31 uplink about 10 minutes early and you may
bring up BRICSAT PSK31. I may have just heard it about 6 minutes before
PSAT. Same uplink and same downlink as PSAT.
Bob, WB4aPR
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
W0DHB
Sent: Thursday, July 16, 2015 8:27 PM
To: 'Joe'; amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
I'm using a GAP Challenger vertical for 10m and on 70cm an M2 30el
(15h/15V) RHCP yagi on a Yaesu G5500 az/el rotator, but a handheld Arrow
or similar antenna for 70cm would probably work fine.
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
Sent: Thursday, July 16, 2015 6:03 PM
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
Thats what I was most interested in the antennas. describe them...
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 7/16/2015 5:43 PM, David W0DHB wrote:
> Thanks Joe I forgot BB would wrap line.
> This one works also
> https://www.dropbox.com/s/r6ywkczcf95o3f2/NO84.wav?dl=0
>
> Base equipment is
> 10m SSB Transmitter with the ability for TX audio being fed by
> Computer sound card.
> 70cm FM RX / antenna system capable of copying satellite downlink and
> able to feed RX audio to Computer.
> Computer with Windows/Mac , DopplerSQF software and software that will
> demod
> PSK31 (Fldigi,Digipan DM780 to name a few)
>
> Software to do downlink doppler tuning is very useful, but not
required.
>
> Dave W0DHB
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
> Sent: Thursday, July 16, 2015 4:24 PM
> To: amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>
> hEDRE i FIXED THAT url ALSO,
>
> *http://tinyurl.com/q3np2sm
>
> Joe
> *
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> On 7/16/2015 2:57 PM, David W0DHB wrote:
>> Andy
>>
>> Here is a recording of the 1930 pass of NO-84
>> https://www.dropbox.com/s/2qtb5d2cm3ktrr0/FM%20435.359944MHz%20%5B12k
>> %
>> 5D%207
>> -16-2015%2019%2033%2052.wav?dl=0
>>
>> Bob KO6TZ and I had a successful QSO. My audio was set at 1500 Uplink
>> frequency of 28.119700 MHz .
>>
>> The signals seemed to be stable, decoding at my end (DM780 ) was not
>> stellar, I'm running the recording through fldigi, MixW and Digipan
>> to see if it's any better.
>>
>> Dave W0DHB
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
>> W0DHB
>> Sent: Thursday, July 16, 2015 8:41 AM
>> To: 'aflowers@xxxxxxxxxxx.xxxxx amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>>
>> Hey Andy
>>
>> The ability to select soundcard would be helpful. In my setup TX
>> audio is fed by a virtual audio cable set to match the 48K sample
>> rate that DopplerPSK is using.
>> Folks using windows should set the recording device side of their
>> soundcard to a 48K sample rate (it usually defaults to 44.1K).
>>
>> You are correct that the uplink frequency is high, I apply a -300 Hz
>> calibration offset.
>>
>> Thanks for all your work on this.
>>
>> Dave W0DHB
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
>> aflowers@xxxxxxxxxxx.xxx
>> Sent: Thursday, July 16, 2015 6:29 AM
>> To: amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] PSAT PSK31 experimental software
>>
>> Bob, Dave;
>> That's great. I'm interested in how well it tracks when the
>> satellite is at a very high elevation and the Doppler is >3 Hz/s. I
>> suspect the error is going to be mostly in the estimates of the
>> orbital elements, but
> we'll see.
>> I will try to join you on the pass when I can cobble together an
>> uplink and a downlink in the same place--probably next week sometime
>> after I get back from vacation.
>>
>> I think you should be able to share a sound device on most OS's, but
>> I have not tried. I assumed it would work on modern Windows OS's
>> because of the hardware abstraction. The program appears to run fine
>> on OSX, but I have not tried running CocoaModem or some other
>> software next to it. Ultimately I could also add a demodulator to
>> the program itself, but that will take some work....I know several
>> hams have separate sound cards for radio stuff, so I may need to add
>> a device selection option in case the system default (or whatever
>> Java picks as the
> default) isn't what you want.
>> The audio frequency displayed in DopplerPSK is the audio frequency
>> being send to the radio, not what you should expect in the passband
>> of your downlink receiver. The LO on PSAT is apparently a bit below
>> 28120 KHz, so if your radio was tuned to 28120 USB (suppressed
>> carrier
>> frequency) you would expect to be a bit higher than 2000Hz in the FM
> passband:
>> http://www.urel.feec.vutbr.cz/esl/files/Projects/PSAT/P%20sat%20trans
>> p
>> onder%
>> 20WEB%20spec02.htm
>>
>> In general, if you want to be lower in the passband I would lower
>> your transmitter RF frequency rather than the audio frequency going
>> to the transmitter. The reason being that if you have any
>> non-linearity in the audio chain you don't end up transmitting a
>> harmonic higher in the band that might bother someone else. Of
>> course, you can probably see if this is an issue or not since the
>> satellite also serves as a crude signal analyzer :-) I chose 2000 Hz
>> as a center since at maximum Doppler of around 700 Hz, the
>> ~2700 Hz tone should go through the transmitter's IF filter without
>> too much attenuation while keeping all the third harmonics and most
>> of the time the second harmonic above the cutoff of a 3 KHz IF filter.
>> Every radio is a bit different, however. You may find that the
>> 1500Hz sweep in the program shows you all your passband ripple in
>> your IF filter :-)
>>
>> Since it works, I'm more motivated to improve the ergonomics of the
>> interface. Much of that depends on the unique operating practices of
>> satellite operation.
>>
>> Andy K0SM/2
>>
>>
>>
>>
>> On Thursday, July 16, 2015 12:31 AM, KO6TZ Bob
>> <my.callsign@xxxxxxx.xxx>
>> wrote:
>>
>>
>> The software worked great !!! Produced a straight line on the
>> waterfall for the down link.
>>
>> As expected, I was alone on the pass, so no opportunity for a contact.
>>
>> I was using digi-pan for the RX, my signal was at around 2200Hz..
>> Probably an indication the oscillator in my radio is off a bit. I
>> think I will lower the frequency from 2000 to about 1600. That will
>> put my signal lower in the VF pass band.
>>
>> I like the program. Had good copy.
>>
>> THANKS.....
>>
>>
>> BOB KO6TZ
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the
> official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the
official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
>
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
all interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
all interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 10, Issue 208
*****************************************
Read previous mail | Read next mail
| |
