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CX2SA > SATDIG 17.07.15 22:57l 987 Lines 36858 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. XE1AY SO-50 grid expedition (18-26 July 2015)
(Patrick STODDARD (WD9EWK/VA7EWK))
2. LVB tracker board free (Bob- W7LRD)
3. Duchifat1 updates (Herzliya Science Center)
4. Re: LVB tracker board free (Bob- W7LRD)
5. Re: PSAT PSK31 experimental software (BRICsat too) (Lee Maisel)
6. Re: PSAT PSK31 experimental software (BRICsat too) (David W0DHB)
7. Re: PSAT PSK31 experimental software (KO6TZ Bob)
8. Re: PSAT PSK31 experimental software (Glenn Miller - AA5PK)
9. Re: PSAT PSK31 experimental software (David W0DHB)
10. Re: PSAT PSK31 experimental software (Red Willoughby)
11. FUNcube-1 operations (Graham Shirville)
----------------------------------------------------------------------
Message: 1
Date: Fri, 17 Jul 2015 02:45:25 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] XE1AY SO-50 grid expedition (18-26 July 2015)
Message-ID:
<CAN6TEUcr69mUpW661unUxGy9QbUpJ_OUwVsTaZ8Rg9AUn61Mjw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi!
I received an e-mail from Omar XE1AO about an upcoming grid
expedition by traveling Mexican ham Ismael XE1AY. Ismael plans
to work SO-50 from the following grids in northerm Mexico over
the next few days:
July 18-19 from DL63
July 19 from DL55
July 20-22 from DL67
July 23 from DL68
July 24-26 from DL78
Not sure: DL56
Ismael's mailing address is OK on QRZ.com. Thanks Omar for
the heads-up about Ismael's upcoming trip.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @xxxxxx
------------------------------
Message: 2
Date: Fri, 17 Jul 2015 04:20:32 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] LVB tracker board free
Message-ID:
<1623183395.13093778.1437106832717.JavaMail.zimbra@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Free to good home a unpopulated LVB tracker board V1.2 and the smaller one
V1.1 as well as the disk. Can't use it just taking up space. Just buy me a
cup of coffee if you ever get to Seattle.
73 Bob W7LRD
Seatle
------------------------------
Message: 3
Date: Fri, 17 Jul 2015 13:53:16 +0300
From: Herzliya Science Center <4x4hsc@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Duchifat1 updates
Message-ID:
<CADMOWume1b1twOViawqyQV5PcM9Y7ijrhDD8r62RMur_PWT2Vw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Dear all,
Duchifat1, launched 1 year ago, was supposed to have onboard a "standard"
space APRS transceiver operating on 145.825MHz. That would have made the
satellite compatible with ISS, other APRS satellites and APRS-IS.
Unfortunately, a short time before launch, we realized that technically we
couldn't keep the intended 145.825MHz transceiver in the final satellite
configuration but we still wanted to make some contribution to amateur
radio in space. After a quick research we discovered that the 2nd
transceiver onboard Duchifat1, the ISIS (Netherlands) TRXUV planned for
Duchifat1's command and telemetry can be programmed to also accept APRS
packets!, however, limited to 14 characters long. Also, the
downlink digital modulation was not the common space APRS of 1200bd AFSK
but 1200bd BPSK, and the uplink frequency is in the UHF band.
We therefore came with the idea of supporting COMPRESSED APRS, and instead
of the standard digipeater, we implement kind of "store&forward" function
in which the satellite collects packets during its flight in orbit and the
students of Herzliya Science Center will download those packets and display
them on a world map in a web site programmed by them.
We published here a few weeks ago the opening of this service and put in
our web site detailed instructions on how to use the Byonics TinyTrak4
(TT4) tracker, with or without GPS to generate packets in the required
format that Duchifat1 will accept. So far, TWO pioneers used this service.
THANKS PETER & MIKE!
While the TT4 solution is still the best we know for sending your actual
live position to Duchifat1, we are happy to announce the 'APRS Encoder', a
new tool in our web site that can generate for you the COMPRESSED APRS
packet for Duchifat1.
The input for the new APRS Encoder is the station's (or nearby) coordinates
set that can be obtained from Google Maps, so this solution is naturally
adequate for stationary base stations, while mobile stations should still
use the Byonics TT4.
?The output of the APRS Encoder is a 14 character long Compressed APRS
packet that can be converted to 1200bd AFSK with a hardware TNC or software
like MIXW ? just copy the 14 chars string and paste it into the MIXW window.
The MIXW should be set to mode Packet, using the most common "VHF 1200 baud
(Standard 1200/2200Hz)" setting. Prior registration is required.
All the details on the satellite, the registration and the APRS Encoder are
at this link: www.h-space-lab.org
Please read all the documentation in the site.
We wish you all good luck and enjoy!
73 from 4X4HSC team: instructors 4Z1WS and 4X1DG, and the students!
------------------------------
Message: 4
Date: Fri, 17 Jul 2015 15:09:18 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] LVB tracker board free
Message-ID:
<393505970.13305177.1437145758528.JavaMail.zimbra@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
GM from Seattle- the freebie is spoken for, going down south.
73 Bob W7LRD
----- Original Message -----
From: "Bob- W7LRD" <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Thursday, July 16, 2015 9:20:32 PM
Subject: [amsat-bb] LVB tracker board free
Free to good home a unpopulated LVB tracker board V1.2 and the smaller one
V1.1 as well as the disk. Can't use it just taking up space. Just buy me a
cup of coffee if you ever get to Seattle.
73 Bob W7LRD
Seatle
_______________________________________________
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: Fri, 17 Jul 2015 09:46:14 -0600
From: Lee Maisel <maisel@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software (BRICsat too)
Message-ID: <55A92346.8080005@xxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
I saw someone's PSK transmission when psat came over, it was obvious
they were using the software because the transmission was nice and
steady/straight. too rough to decode at the time. I'll try again.
When Bricsat followed a few minutes later I didn't hear/see anything at
all. Not even APRS. Is bricsat lower power?
73
Lee
W5LMM
On 7/16/2015 6:31 PM, Robert Bruninga wrote:
> 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
> _______________________________________________
> 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
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------------------------------
Message: 6
Date: Fri, 17 Jul 2015 11:29:23 -0600
From: "David W0DHB" <dave@xxxxx.xxx>
To: "'Robert Bruninga'" <bruninga@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] PSAT PSK31 experimental software (BRICsat too)
Message-ID: <00b601d0c0b6$1fd57c90$5f8075b0$@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Bob
The keps I have (nasabare.txt) are showing bricsat trailing psat by 16 mins.
I still have not heard anything out of bricsat
Dave W0DHB
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Robert
Bruninga
Sent: Thursday, July 16, 2015 6:32 PM
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software (BRICsat too)
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.
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>> the official views of AMSAT-NA.
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>>
>> _______________________________________________
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>> to all interested persons worldwide without requiring membership.
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>> the official views of AMSAT-NA.
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>> _______________________________________________
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>> to all interested persons worldwide without requiring membership.
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>> the official views of AMSAT-NA.
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>> _______________________________________________
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>> 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.
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>>
>>
> _______________________________________________
> 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.
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>
> _______________________________________________
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> to all interested persons worldwide without requiring membership.
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> the
official views of AMSAT-NA.
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>
>
_______________________________________________
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------------------------------
Message: 7
Date: Fri, 17 Jul 2015 12:35:06 -0700
From: KO6TZ Bob <my.callsign@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
Message-ID: <55A958EA.3030601@xxxxxxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII; format=flowed
On the 19:20u pass, it was hard copy, but I worked Glenn AA5PK. I saw
two other PSK signals. One Doppler corrected the other not. I could not
make out a call sign for either.
BOB KO6TZ
------------------------------
Message: 8
Date: Fri, 17 Jul 2015 14:38:28 -0500
From: "Glenn Miller - AA5PK" <aa5pk@xxxxxxxxxx.xxx>
To: "KO6TZ Bob" <my.callsign@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
Message-ID: <177F3FFA28E64086899F8B54AF118AC9@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
One of those signals was W0DHB who I also worked on that pass.
Glenn AA5PK
-----Original Message-----
From: KO6TZ Bob
Sent: Friday, July 17, 2015 2:35 PM
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
On the 19:20u pass, it was hard copy, but I worked Glenn AA5PK. I saw
two other PSK signals. One Doppler corrected the other not. I could not
make out a call sign for either.
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.
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------------------------------
Message: 9
Date: Fri, 17 Jul 2015 13:51:50 -0600
From: "David W0DHB" <dave@xxxxx.xxx>
To: "'Glenn Miller - AA5PK'" <aa5pk@xxxxxxxxxx.xxx>, "'KO6TZ Bob'"
<my.callsign@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
Message-ID: <00f501d0c0ca$0659f570$130de050$@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Also saw Jack KC7MG on there.
No sign of NO-83 transponder.
Next pass I'm going to just use SATPC32 to doppler shift uplink see if copy
is better.
I recorded that pass
https://www.dropbox.com/s/o5q9spycl93rdrf/n084%20pass.wav?dl=0
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Glenn Miller
- AA5PK
Sent: Friday, July 17, 2015 1:38 PM
To: KO6TZ Bob; amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
One of those signals was W0DHB who I also worked on that pass.
Glenn AA5PK
-----Original Message-----
From: KO6TZ Bob
Sent: Friday, July 17, 2015 2:35 PM
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
On the 19:20u pass, it was hard copy, but I worked Glenn AA5PK. I saw two
other PSK signals. One Doppler corrected the other not. I could not make
out a call sign for either.
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.
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_______________________________________________
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interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
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------------------------------
Message: 10
Date: Fri, 17 Jul 2015 15:26:44 -0500
From: Red Willoughby <red@xxxxxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT PSK31 experimental software
Message-ID: <55A96504.6070301@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
I was on the 1735Z pass today and finally saw the PSAT telemetry signal
but it was not strong enough to decode well (with DM780) even though it
was a very high pass. I don't think the beacon came on due to receiving
my signal however. I saw a couple of other PSK signals either side of
2000 KHz in the passband but they were also weak. I called CQ before,
during and after the pass to see if my signal would appear on the
waterfall (I am using DopplerPSK to transmit so I am full duplex). But,
neither PSAT nor BRICSAT are hearing me (running 25 watts to a Windom
that otherwise does a remarkable job).
I am also seeing some conflict in the AOS/LOS times between SatPC32 and
HRD SatTracker. Both are using identical TLEs for NO-84 - I compared the
TLE lines in both files character by character. I am using catalog
number 40654 for NO-84 in both programs and have my location data
entered identically in both. SatPC32 shows the NO-84 AOS about 8 minutes
behind the HRD NO-84 AOS and I believe SatPC32 is correct based on the
signals I heard. Does anyone have any guidance for getting these times
sync-ed up?
Thanks in advance.
Red
KC4LE
------------------------------
Message: 11
Date: Fri, 17 Jul 2015 21:46:16 +0100
From: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
To: <funcube@xxxxxxxxxxx.xx.xx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FUNcube-1 operations
Message-ID: <785ADA2A1F3F4FDCAB7A4B28B5C7CE8D@xxxxxxx.xxxxx>
Content-Type: text/plain; charset="utf-8"
Good evening,
Just to report that FUNcube-1 is now in continuous ?transponder on? mode for
the weekend. It can be expected that, as usual, she will stay in this mode
until Sunday evening (UTC time)
A heads up for next weekend ? As AMSAT-UK is holding their Collloquium event
in Guildford Surrey, it is expected that FUNcube-1 will be switched to
continuous transponder mode , exceptionally, from Thursday evening (July
23rd) until either Sunday evening (July 26th) or, more likely, Monday
evening (July 27th).
This will enable the Colloquium attendees to view or demonstrate and enjoy
the transponder operations for the maximum possible time. Thanks for your
understanding!
best 73
Graham
G3VZV
------------------------------
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
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AMSAT-NA.
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------------------------------
End of AMSAT-BB Digest, Vol 10, Issue 209
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