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CX2SA > SATDIG 04.07.15 21:23l 919 Lines 31093 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: Fox, "Easy Sats"....et al.... (Jim Jerzycke)
2. Re: Fox, "Easy Sats"....et al.... (Joe)
3. Re: Fox, "Easy Sats"....et al.... (Steve Kristoff)
4. Working FOX-1A (Clint Bradford)
5. Re: Fox, "Easy Sats"....et al.... (Paul Stoetzer)
6. Re: Spectacular Photo of the ISS (pixel) (Robert Bruninga)
7. Fox, "Easy Sats" - segway to PSAT PSK31? (Robert Bruninga)
8. Re: Fox, "Easy Sats"....et al....
(Patrick STODDARD (WD9EWK/VA7EWK))
9. Re: Fox, "Easy Sats" - segway to PSAT PSK31? (Paul Stoetzer)
10. Re: SO50 gridline protocol (Bryan Green)
11. Re: Fox, "Easy Sats"....et al.... (Joe)
12. Re: Fox, "Easy Sats"....et al.... (Bill Dillon)
13. Re: Fox, "Easy Sats" - segway to PSAT PSK31? (Robert Bruninga)
----------------------------------------------------------------------
Message: 1
Date: Sat, 04 Jul 2015 18:34:42 +0000
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Fox, "Easy Sats"....et al....
Message-ID: <55982742.5040800@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
Yuri is an experienced operator, not somebody with an HT and an
Arrow/Elk standing in their backyard waving the antenna around and
saying "Helllllooooooo" into the radio for the entire pass.
Jim KQ6EA
On 07/04/2015 06:34 PM, R.T.Liddy wrote:
> Yuri, UT1FG/MM has worked many stations half-duplex and givenout a ton of
rare grids. Maybe he should be educated about how "dumb"his operating
technique is? ? ? ? ?
> Bob K8BL
> From: Michael <Mat_62@xxxxxxx.xxx>
> To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
> Sent: Saturday, July 4, 2015 1:02 PM
> Subject: [amsat-bb] Fox, "Easy Sats"....et al....
>
> Once again I feel the need to say that we have gone in the wrong
> direction by trying to convince everyone how easy a "sat" is to work
> with a handheld antenna. I got into satellite communication because of
> the technical challenge involved, not by how "easy it was".
> This whole half or full duplex issue is a symptom of "dumbing down"
> There should never be any question on it. Full duplex should ALWAYS be
> used.
> 73,
> Michael, W4HIJ
> _______________________________________________
> 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: 2
Date: Sat, 04 Jul 2015 13:38:39 -0500
From: Joe <nss@xxx.xxx>
To: Paul Stoetzer <n8hm@xxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Fox, "Easy Sats"....et al....
Message-ID: <5598282F.2080305@xxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
I have a 12 foot tape here that when coiled up is less than a inch in
diameter MAX,
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 7/4/2015 1:31 PM, Paul Stoetzer wrote:
> A 10m dipole is almost 17 feet long. You could fit it in a cubesat,
> but where are the batteries, transmitter, receiver, IHU, etc going to go?
>
> NO-83 and NO-84 have 10m uplinks that use a 72' wire antenna for
> reception. That depends on the ground station to supply a bit more
> uplink power. With a cubesat, you don't have adequate power to
> overcome a poor downlink antenna.
>
> 73,
>
> Paul, N8HM
>
> On Sat, Jul 4, 2015 at 2:22 PM, Joe <nss@xxx.xxx <mailto:nss@xxx.xxx>>
> wrote:
>
> tape measure dipole worked in the past.
> Joe WB9SBD
>
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> On 7/4/2015 1:10 PM, Paul Stoetzer wrote:
>> Because of the difficulty of putting an adequate antenna for a
>> 10m downlink on a cubesat.
>>
>> 73.
>>
>> Paul, N8HM
>>
>> On Sat, Jul 4, 2015 at 2:07 PM, Joe <nss@xxx.xxx
>> <mailto:nss@xxx.xxx>> wrote:
>>
>> Why don't they have mode "A" anymore? even the single channel
>> FM could be mode a true?
>>
>> The Original Rolling Ball Clock
>> Idle Tyme
>> Idle-Tyme.com
>> http://www.idle-tyme.com
>> On 7/4/2015 12:48 PM, Paul Stoetzer wrote:
>>> Well, you are partially right. With OSCAR 6 and 7 and their
strong ten
>>> meter downlinks, it was just a matter of adding two meter transmit
>>> capability to an HF station. Now it does take a little more work
to
>>> receive and transmit at VHF and UHF with SSB or CW and the
prevalence
>>> of man-made noise on VHF and UHF these days generally requires a
beam.
>>>
>>> I am quite certain that many of the people that worked OSCARs,
6, 7,
>>> 8, and the RS birds never graduated from Mode A. Just like many
of the
>>> FM satellite users never graduate from FM.
>>>
>>> People tend to think it's more difficult than it is. I've made
over
>>> 2,000 linear transponder contacts with nothing more than two Yaesu
>>> FT-817s (for a few hundred of those I used an Icom IC-R10
receiver)
>>> and an Arrow antenna handheld.
>>>
>>> The radios for operating via a linear transponder are widely
available
>>> and inexpensive. A Yaesu FT-100, FT-817, FT-857, FT-897, FT-991
or an
>>> Icom IC-706MkII(g), Icom IC-7000, or any of those plus a FUNcube
>>> dongle and computer to receive the downlink are all the radio
you need
>>> and an Arrow or Elk antenna will get you going.
>>>
>>> 73,
>>>
>>> Paul, N8HM
>>>
>>>
>>> On Sat, Jul 4, 2015 at 1:19 PM, Joe<nss@xxx.xxx>
<mailto:nss@xxx.xxx> wrote:
>>>> Funny how a linear bird is a technical challenge, wow, as a
novice in 1975 I
>>>> listened to Oscar 6 & 7 all the time. and once up graded used
them also all
>>>> the time. Sad to think that 1970's technology is high tech to
anyone.
>>>> Joe WB9SBD
>>>> Sig
>>>> The Original Rolling Ball Clock
>>>> Idle Tyme
>>>> Idle-Tyme.com
>>>> http://www.idle-tyme.com
>>>>
>>>> On 7/4/2015 12:10 PM, Paul Stoetzer wrote:
>>>>> Michael,
>>>>>
>>>>> The idea is to get people hooked on satellite operating and
then have
>>>>> them "graduate" to more challenging aspects of satellite
operating.
>>>>>
>>>>> AMSAT is, of course, working on projects that be more of a
technical
>>>>> challenge than FM satellites, like Fox-1E with a linear
transponder
>>>>> and the geosynchronous P4B project.
>>>>>
>>>>> 73,
>>>>>
>>>>> Paul, N8HM
>>>>>
>>>>> On Sat, Jul 4, 2015 at 1:02 PM, Michael<Mat_62@xxxxxxx.xxx>
<mailto:Mat_62@xxxxxxx.xxx> wrote:
>>>>>> Once again I feel the need to say that we have gone in the
wrong
>>>>>> direction
>>>>>> by trying to convince everyone how easy a "sat" is to work
with a
>>>>>> handheld
>>>>>> antenna. I got into satellite communication because of the
technical
>>>>>> challenge involved, not by how "easy it was".
>>>>>> This whole half or full duplex issue is a symptom of
"dumbing down"
>>>>>> There
>>>>>> should never be any question on it. Full duplex should
ALWAYS be used.
>>>>>> 73,
>>>>>> Michael, W4HIJ
>>>>>> _______________________________________________
>>>>>> Sent viaAMSAT-BB@xxxxx.xxx <mailto: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 viaAMSAT-BB@xxxxx.xxx <mailto: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 viaAMSAT-BB@xxxxx.xxx <mailto: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: Sat, 4 Jul 2015 14:45:11 -0400
From: "Steve Kristoff" <skristof@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Fox, "Easy Sats"....et al....
Message-ID: <33577F456A0E4EE3826AEDC3E15B85FC@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
I have no idea if you're a teacher or not, but generally speaking, if you
want to help someone learn something, you start with the easy stuff, then
help them work their way up.
Also, this is a hobby. Some folks may simply find it fun to work an FM
satellite once in a while and sweat the fancy stuff.
Steve AI9IN
P.S. Two Baofengs won't get you full-duplex because the one you use for the
receiver desensitizes when you transmit with the other one.
----- Original Message -----
From: "Jim Jerzycke" <kq6ea@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Saturday, July 04, 2015 2:28 PM
Subject: Re: [amsat-bb] Fox, "Easy Sats"....et al....
> You're missing the point, Steve.
>
> This is supposed to be an *educational* activity, not "Gee Look how *EASY*
> it is".
>
> If you can afford one Baofeng HT, then you can afford TWO so you can run
> full duplex.
>
> The FM satellites are a zoo 90% of the time. People just don't want to
> admit it......
>
> Jim KQ6EA
>
>
> On 07/04/2015 05:15 PM, Steve Kristoff wrote:
>> So, we should make them only available to the Amateur Radio elite who can
>> afford computer tracked rotors with separate yagis and all-mode full
>> duplex U/V radios? Keep out the riff-raff.
>>
>> Steve AI9IN
>> Riff-raff@xxxx
>>
>> ----- Original Message ----- From: "Michael" <Mat_62@xxxxxxx.xxx>
>> To: <amsat-bb@xxxxx.xxx>
>> Sent: Saturday, July 04, 2015 1:02 PM
>> Subject: [amsat-bb] Fox, "Easy Sats"....et al....
>>
>>
>>> Once again I feel the need to say that we have gone in the wrong
>>> direction by trying to convince everyone how easy a "sat" is to work
>>> with a handheld antenna. I got into satellite communication because of
>>> the technical challenge involved, not by how "easy it was".
>>> This whole half or full duplex issue is a symptom of "dumbing down"
>>> There should never be any question on it. Full duplex should ALWAYS be
>>> used.
>>> 73,
>>> Michael, W4HIJ
>>> _______________________________________________
>>> 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
>>>
>> Steve Kristoff
>> skristof@xxxxxxx.xxx
>>
>>
>> _______________________________________________
>> 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
>
Steve Kristoff
skristof@xxxxxxx.xxx
------------------------------
Message: 4
Date: Sat, 04 Jul 2015 11:47:21 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Working FOX-1A
Message-ID: <BADEDD1C-A9F6-442F-A32E-24A5B040B0AF@xxx.xxx>
Content-Type: text/plain; charset=us-ascii
>> ... At the time I got started I was influenced by an article on the web
titled
"Work FM Satellites with your HT!" advocating that all I needed was a
single handheld and a tape measure antenna ...
Wow. I take that as a compliment ...
>> ... I notice that the article has been since updated to include "Ideally,
we
should be working the satellites in full duplex mode, where we can
simultaneously listen to the downlink as we are transmitting." Thank you for
clarifying this.
Then I am teaching it correctly.
Whew.
Clint
------------------------------
Message: 5
Date: Sat, 4 Jul 2015 14:48:00 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Steve Kristoff <skristof@xxxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Fox, "Easy Sats"....et al....
Message-ID:
<CABzOSOr1cXR2fpq56yiX0d+Tt_ffRRpkGyzoEUqJbteVZsCg5w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Not necessarily. A simple low pass filter or diplexer on the output of
the transmit radio should eliminate enough of the third harmonic to
prevent desense.
Since it's a third harmonic issue, this should not be a problem on
EO-80 or the Fox-1 satellites.
73,
Paul, N8HM
On Sat, Jul 4, 2015 at 2:45 PM, Steve Kristoff <skristof@xxxxxxx.xxx> wrote:
> I have no idea if you're a teacher or not, but generally speaking, if you
> want to help someone learn something, you start with the easy stuff, then
> help them work their way up.
> Also, this is a hobby. Some folks may simply find it fun to work an FM
> satellite once in a while and sweat the fancy stuff.
>
> Steve AI9IN
> P.S. Two Baofengs won't get you full-duplex because the one you use for the
> receiver desensitizes when you transmit with the other one.
>
> ----- Original Message ----- From: "Jim Jerzycke" <kq6ea@xxxxxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>
> Sent: Saturday, July 04, 2015 2:28 PM
> Subject: Re: [amsat-bb] Fox, "Easy Sats"....et al....
>
>
>
>> You're missing the point, Steve.
>>
>> This is supposed to be an *educational* activity, not "Gee Look how *EASY*
>> it is".
>>
>> If you can afford one Baofeng HT, then you can afford TWO so you can run
>> full duplex.
>>
>> The FM satellites are a zoo 90% of the time. People just don't want to
>> admit it......
>>
>> Jim KQ6EA
>>
>>
>> On 07/04/2015 05:15 PM, Steve Kristoff wrote:
>>>
>>> So, we should make them only available to the Amateur Radio elite who can
>>> afford computer tracked rotors with separate yagis and all-mode full
duplex
>>> U/V radios? Keep out the riff-raff.
>>>
>>> Steve AI9IN
>>> Riff-raff@xxxx
>>>
>>> ----- Original Message ----- From: "Michael" <Mat_62@xxxxxxx.xxx>
>>> To: <amsat-bb@xxxxx.xxx>
>>> Sent: Saturday, July 04, 2015 1:02 PM
>>> Subject: [amsat-bb] Fox, "Easy Sats"....et al....
>>>
>>>
>>>> Once again I feel the need to say that we have gone in the wrong
>>>> direction by trying to convince everyone how easy a "sat" is to work
with
>>>> a handheld antenna. I got into satellite communication because of the
>>>> technical challenge involved, not by how "easy it was".
>>>> This whole half or full duplex issue is a symptom of "dumbing down"
>>>> There should never be any question on it. Full duplex should ALWAYS be
>>>> used.
>>>> 73,
>>>> Michael, W4HIJ
>>>> _______________________________________________
>>>> 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
>>>>
>>> Steve Kristoff
>>> skristof@xxxxxxx.xxx
>>>
>>>
>>> _______________________________________________
>>> 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
>>
> Steve Kristoff
> skristof@xxxxxxx.xxx
>
>
> _______________________________________________
> 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: Sat, 4 Jul 2015 14:48:05 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Spectacular Photo of the ISS (pixel)
Message-ID: <023373171cc57d14207d075a9470912d@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
> this potographer had a few-seconds' window to capture the ISS against
the moon:
>
http://www.cnet.com/news/stunning-photo-catches-the-iss-in-transit-over-th
e-full-moon/#ftag=CAD590a51e
The ISS appears big because it is close to us. I was curious to see what
it would look like if it was in orbit around the moon. Turns out, it
would be one-tenth the size of even a single pixel.
I edited the image to show this:
http://aprs.org/ISS-moon-picture.png
Bob, WB4APR
------------------------------
Message: 7
Date: Sat, 4 Jul 2015 14:56:34 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Fox, "Easy Sats" - segway to PSAT PSK31?
Message-ID: <5ce7cbe57de4233abf4fa5cf5c1e9ae3@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Segway this argument to the 10m uplink now 100% available on PSAT PSK-31
which virtually no one is using.
> With OSCAR 6 and 7... ten meter downlinks, it was just a matter of
adding two meter transmit capability to an HF station.
For PSAT PSK31 it is even simpler. Add a UHF FM HT to your HF station!
> many... people that worked OSCARs, 6, 7, 8, and RS birds never graduated
from Mode A...
> Just like many of the FM satellite users never graduate from FM.
We give them what they ask for, a multi-user simultaneous transponder
supporting dozens of simultaneous contacts, yet we have only seen 1 or 2
stations at a time give it a try.
http://aprs.org/psat.html
Just an observation. I thought this PSK-31 linerar uplink with FM
downlink would make everyone happy. It's a foot in both camps..
<wink>
Bob, WB4aPR
------------------------------
Message: 8
Date: Sat, 4 Jul 2015 18:56:36 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Fox, "Easy Sats"....et al....
Message-ID:
<CAN6TEUdSfQpu238kDPSdqmG2mB8fndi8Ef9sqBgXacQyepAzYQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Steve,
Not entirely correct. Unfortunately, the quality control on the Baofeng
assembly
line is now what it should be. No two radios of the same Baofeng model will
perform the same, every time. It is possible to use two UV-5Rs, two UV-82s,
or a combination of UV-5R and UV-82 to work satellites. I've done this. I
don't
normally use this option, but did it so I could "walk the walk" when I
say that it
is possible to use two of these inexpensive radios - including at a hamfest
demonstration I gave last year in southern Arizona:
https://www.youtube.com/watch?v=_cLx9h-vNRA
I used a UV-82 as the transmit radio, since it has a PTT that can key each
VFO individually. The speaker-mic I use with the UV-82 also has separate
PTT buttons. I put 145.850 MHz in both VFOs, and set the appropriate
PL tones to activate the satellite (74.4 Hz) and to talk through the satellite
(67.0 Hz) in each VFO. No need to change frequencies/memories on the
transmit radio with this setup. I used a UV-5R as the receive radio, set to
tune in 2.5 Hz
I may have an advantage in working SO-50 with two of these HTs, since
I use an Elk log periodic instead of an Arrow Yagi or equivalent homebrew
dual-band Yagi. I have to use a diplexer to connect two radios to the
single feedpoint on the Elk, so the diplexer is also serving as a
bandpass filter.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @xxxxxx
> P.S. Two Baofengs won't get you full-duplex because the one you use for the
> receiver desensitizes when you transmit with the other one.
------------------------------
Message: 9
Date: Sat, 4 Jul 2015 15:08:42 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Robert Bruninga <bruninga@xxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Fox, "Easy Sats" - segway to PSAT PSK31?
Message-ID:
<CABzOSOo4ixBF6z-njzUV557rEqS8UHoDka0YxRbAP=H7cx-RHA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Yes, I'd like to try it myself, but my apartment QTH makes it tough.
I'll get to it at some point. I have copied the downlink. It's a nice
strong signal. I just have to figure out the best way to manage to
transmit as well.
My belief is the uplink frequency choice was a mistake. Why mix
terrestrial and satellite users on the same frequency?
A nice quiet frequency in the OSCAR subband would have been a better
choice, in my opinion.
73,
Paul, N8HM
On Sat, Jul 4, 2015 at 2:56 PM, Robert Bruninga <bruninga@xxxx.xxx> wrote:
> Segway this argument to the 10m uplink now 100% available on PSAT PSK-31
> which virtually no one is using.
>
>> With OSCAR 6 and 7... ten meter downlinks, it was just a matter of
> adding two meter transmit capability to an HF station.
>
> For PSAT PSK31 it is even simpler. Add a UHF FM HT to your HF station!
>
>> many... people that worked OSCARs, 6, 7, 8, and RS birds never graduated
> from Mode A...
>> Just like many of the FM satellite users never graduate from FM.
>
> We give them what they ask for, a multi-user simultaneous transponder
> supporting dozens of simultaneous contacts, yet we have only seen 1 or 2
> stations at a time give it a try.
>
> http://aprs.org/psat.html
>
> Just an observation. I thought this PSK-31 linerar uplink with FM
> downlink would make everyone happy. It's a foot in both camps..
>
> <wink>
> Bob, WB4aPR
> _______________________________________________
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> to all interested persons worldwide without requiring membership. Opinions
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------------------------------
Message: 10
Date: Sat, 4 Jul 2015 12:09:37 -0700
From: Bryan Green <bryan@xxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SO50 gridline protocol
Message-ID: <7773551B-0AA0-4EBC-A855-EAB6ED95BB0C@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi, Michael!
Here's what I have done, based on what I learned from Patrick WD9EWK and
John K8YSE among others.
1. If you are going to operate on a grid line, you are supposed to "prove
it" according to the VUCC rules.
Special attention is to be paid to section 4 (e) and 4 (f), which explain in
detail that:
* You have to be "present" in all grids.
* You have to prove it with a GPS set to WGS84 (the default).
* The GPS reading has to be mo more than 20 feet of error.
* Get two photos: the GPS reading and the placement of the GPS in the
operating setup.
Here is a reference to those rules:
https://www.arrl.org/files/file/Awards%20Application%20Forms/VUCCRULE1a.pdf
Practically speaking, I park so that the back end of the minivan is right on
the line and set up the radios right on the open back end. Take a big
picture and a closeup, and we're good.
If you go somewhere particularly rare, it is a good idea to take these
pictures even if it's only for 1 grid square.
2. If you can, send a note to AMSAT-BB indicating when you will be operating
and which passes. If you are on Twitter, post it there. I have posted even
an hour ahead of time and it is always a good idea to get the word out. My
notes look like this:
> Subject: Impromptu Grid DXpedition: KL7CN/W6 at CN80 on SO-50 at 02:37Z
with LotW Confirmation
>
> Hello, all:
>
> Sorry for the short notice -- we'll be active as follows:
>
> QTH: CN80 in Northern California
> Satellite: SO-50
> Date and time: Today 2015-06-21 02:37Z
> Confirmation: LotW, etc.
>
> -- bag
>
> Bryan KL7CN/W6
My Twitter posts are just the subject line.
3. When I call out I saw something like this:
K-L-7-Charlie-November Slash Double-you Six Delta-Mike-Zero-Five/Zero-Six
Gridline
Keeps it short, and advertises that I am in a special place.
I don't bother with signal reports. Everybody gets a 5-9 from the DX.
When someone calls me, suppose it is N4UFO, I say something like this:
November Four Uniform Foxtrot Oscar Confirm
No need to retransmit the grid or my call.
4. If you can, record the pass. You will thank yourself later.
5. Ask W0DHB about LotW logging. He is an expert with LotW and HRD.
The main detail is getting a proper location set up in LotW that includes
both grids. It's not hard, but it is unusual so it's a good idea to take a
little extra time and get some help to get it right.
Sounds like fun! Go for it!
-- bag
Bryan KL7CN/W6
On Jul 4, 2015, at 06:53, Michael Adams <mda@xxxx.xxx> wrote:
Due to a death in the family, I am currently enroute to my parents' place
in Memphis.
I have a (not full duplex, unfortunately) HT in my bag, and I just
discovered I had left my Elk in the car from Field Day.
The 90th meridian passes through my old childhood bedroom.
I was wondering, in case the opportunity arises, what the protocol is for
operating on a gridline, and the subsequent LOTW record keeping.
--
Michael Adams | mda@xxxx.xxx
_______________________________________________
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: 11
Date: Sat, 04 Jul 2015 14:15:00 -0500
From: Joe <nss@xxx.xxx>
To: Paul Stoetzer <n8hm@xxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Fox, "Easy Sats"....et al....
Message-ID: <559830B4.4050807@xxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
yes it was that big not because of the antennas but the radio technology
of the day. I posted about Oscar -5 because of the tape measure antennas
and your statement about deploying such an antenna.
Joe WB9SBD
On 7/4/2015 1:59 PM, Paul Stoetzer wrote:
> Now try to deploy it from a spinning and tumbling cubesat!
------------------------------
Message: 12
Date: Sat, 4 Jul 2015 14:09:57 -0500
From: Bill Dillon <bill.g.dillon@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Fox, "Easy Sats"....et al....
Message-ID:
<CADnLNZyY5wjUjiOySbu-jewFgybzb2XQymBs2cCmJoYwOta3TA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
For a semi-clueless, riff-raff newbie, this has been an enlightening
discussion. I will endeavor to go full-duplex, once I figure out how to
tell my xyl I need another radio. ;-)
73,
--Bill, KG5FQX
------------------------------
Message: 13
Date: Sat, 4 Jul 2015 15:18:54 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: Paul Stoetzer <n8hm@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Fox, "Easy Sats" - segway to PSAT PSK31?
Message-ID: <038b2d790e5620845d0f06a01a7d3fa2@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
> My belief is the uplink frequency choice was a mistake.
> Why mix terrestrial and satellite users on the same frequency?
Because without them, we'd have no signals at all.... ;-)
Bob
------------------------------
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 190
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