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CX2SA > SATDIG 07.10.20 16:38l 933 Lines 34851 Bytes #999 (0) @ WW
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Sent: 201007/1323Z @:CX2SA.SAL.URY.SOAM #:41166 [Salto] FBB7.00e $:AMSATBB15403
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Fox Telemetry antenna? (Greg D)
2. Re: Unusual ISS SSTV signal (Greg D)
3. Re: Unusual ISS SSTV signal (Gary)
4. Re: Unusual ISS SSTV signal (Greg D)
5. Re: Unusual ISS SSTV signal (John Brier)
6. Re: Unusual ISS SSTV signal (John Brier)
7. Re: Fox Telemetry antenna? (Burns Fisher)
----------------------------------------------------------------------
Message: 1
Date: Tue, 6 Oct 2020 16:48:44 -0700
From: Greg D <ko6th.greg@?????.???>
To: "Mark L. Hammond" <marklhammond@?????.???>
Cc: "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Fox Telemetry antenna?
Message-ID: <e125273d-520c-facb-5155-bf883156808c@?????.???>
Content-Type: text/plain; charset=UTF-8
Maybe the AC cap is failing?
Greg KO6TH
Mark L. Hammond via AMSAT-BB wrote:
> Rotor/coax snags, then burned out motor. Or just a burned out motor.
> That's been the most common problem for me. Stops turning...
>
> Mark L. Hammond [N8MH]
> AMSAT Director and Command Station
>
>
>
> On Tue, Oct 6, 2020 at 6:28 PM Gary via AMSAT-BB <amsat-bb@?????.???> wrote:
>
>> I am curious do they stop turning or do they quit indicating?
>>
>> The Alpha Spid looks cool and reliable, but at a completely different
>> price point.
>>
>> Thanks and 73,
>> Gary "Joe" kk0sd
>>
>> -----Original Message-----
>> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Bob Hammond via
>> AMSAT-BB
>> Sent: Tuesday, October 6, 2020 4:00 PM
>> To: amsat-bb@?????.???
>> Subject: Re: [amsat-bb] Fox Telemetry antenna?
>>
>> So, can I just park my LEO antennas south just a bit above the horizon for
>> dedicated telemetry collection when not using them for sat ops?
>>
>> Bob W7OTJ
>>
>> On Tue, Oct 6, 2020 at 1:49 PM Stephen E. Belter via AMSAT-BB <
>> amsat-bb@?????.???> wrote:
>>
>>> Kevin,
>>>
>>> I'm in West Lafayette, Indiana, so no salt water. My antennas are
>>> M-squared medium size antennas, 2MCP14 and 436CP30 with polarity
>>> switches, so not overloaded.
>>>
>>> Mark N8MH, has had similar experience with his Yaesu's. Since he is a
>>> dedicated telemetry collector like you, and since he is a control
>>> operator for the Fox satellites, he replaces his rotors when they
>>> fail. He had a volunteer to repair his broken rotors, so I
>>> transported 6-8 rotors from his garage in North Carolina (not near
>>> salt water either) to Indiana. Half were elevation rotors, half were
>>> azimuth rotors. I thought I was just having bad luck until Mark shared
>> his experience.
>>> The last time mine failed, it was the azimuth rotor. Pointing the
>>> Yagis south just above the horizon worked a little better (long term)
>>> than an omnidirectional antenna. Since it failed while I was on a 3
>>> month trip, I couldn't replace the rotor.
>>>
>>> I still recommend the G5500 rotors for normal operators, but they may
>>> not be the best choice for 24x7x365 telemetry collection. (I'm glad
>>> they work for you in that mode.) I've since switched to an AlphaSpid
>>> rotor with a Green Heron controller. You can buy the AlphaSpid rotors
>>> without the controller (my recommendation for heavy duty use) and use
>>> a Green Heron instead.
>>>
>>> Still: YMMV
>>>
>>> 73, Steve N9IP
>>> --
>>> Steve Belter, seb@??????.???
>>>
>>>
>>> ?On 10/6/20, 3:53 PM, "AMSAT-BB on behalf of Kevin via AMSAT-BB" <
>>> amsat-bb-bounces@?????.??? on behalf of amsat-bb@?????.???> wrote:
>>>
>>> Steve,
>>> What are you doing that is wearing it out in 4-8 months?
>>> overloaded?
>>> near the ocean with salt? something has to be wrong as mine go for
>>> years.
>>>
>>> 73 Kevin WA7FWF
>>>
>>> On 10/6/2020 10:21 AM, Stephen E. Belter via AMSAT-BB wrote:
>>> > Roy,
>>> >
>>> > In my experience, using the CP antennas with the G5500 will help
>>> you collect and decode about 4-6 times more packets than an
>>> omnidirectional antenna.
>>> >
>>> > But tracking the Fox satellites using the Yaesu rotors will wear
>>> out the rotors in 4-8 months. Replacement rotors are about $250 each
>>> (you won?t need to replace the controller).
>>> >
>>> > YMMV
>>> >
>>> > 73, Steve N9IP
>>> > --
>>> > Steve Belter, seb@??????.???
>>> >
>>> >
>>> >
>>>
>>> _______________________________________________
>>> Sent via AMSAT-BB@?????.???. 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:
>>> https://www.amsat.org/mailman/listinfo/amsat-bb
>>>
>>> _______________________________________________
>>> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>>>
>> _______________________________________________
>> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>> _______________________________________________
>> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Tue, 6 Oct 2020 19:38:23 -0700
From: Greg D <ko6th.greg@?????.???>
To: "Loren M. Lang" <penguin359@?????.???>, AMSAT BB
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Unusual ISS SSTV signal
Message-ID: <f99445c7-4644-7712-7257-059c5e78083f@?????.???>
Content-Type: text/plain; charset=UTF-8
I just heard something even weirder here during the just-completed
02:04z pass here in CM98. 3 images during the pass, the first two
totally wiped out. The third started off just fine, then the
interference started in.
I captured the screen and audio for the second and 3rd images here:
https://www.dropbox.com/s/jzlp9jzs4k29sy1/ISS%20SSTV%20Pass3-2020-10-06_19.08.
39.mp4?dl=1
I'm no where near where Loren is, so it's unlikely to be local. This is
with the same equipment and setup as two passes yesterday, which were
totally clean. The 8pm (PDT) pass yesterday was recorded for our local
club, and can be viewed here:
https://www.youtube.com/watch?v=Z_SkJ8_mtA4
Thoughts?
Greg KO6TH
Loren M. Lang via AMSAT-BB wrote:
> During one of the SSTV transmissions today, I heard an unusual signal
> overlaid on top of the regular SSTV signal. It started just after the
> original SSTV signal, and was initially quite strong, but eventually
> lost out to the regular SSTV signal. It sounds similar to SSTV, but
> not quite the same. This started at 2020-10-06 02:54:32Z. You can hear it
here:
>
> https://www.dropbox.com/s/abcizkoly8rn1ij/funny-sstv-signal.mp3?dl=0
>
> You can see the waterfall during the initial decode here:
>
> https://www.dropbox.com/s/dxmy4rhruiit84v/funny-sstv-signal.png?dl=0
>
> It does look like a separate signal on top of the original SSTV signal
> and it looks more centered on 145.800 MHz than the Doppler shifted ISS
> transmission which makes me thing it might be terrestrial, but I have
> no idea where it would be coming from. It definitely looks like it was
> targeting 145.8 and it sounds SSTV-like. The signal poped in several
> more times as can be seen in this waterfall:
>
> https://www.dropbox.com/s/gwh4h4b1d8qtnbv/funny-sstv-signal2.png?dl=0
>
> Any ideas what this came from?
>
> Here's the image I received during that pass:
>
> https://www.dropbox.com/s/j11wj6yo9s2ceg9/sstv-202010060311.png?dl=0
>
> I do have the raw baseband signal if anyone's interested.
>
> -Loren
> K7IW
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Wed, 7 Oct 2020 02:51:53 +0000
From: Gary <gary_mayfield@???????.???>
To: Greg D <ko6th.greg@?????.???>, "Loren M. Lang"
<penguin359@?????.???>, "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Unusual ISS SSTV signal
Message-ID:
<CH2PR13MB3864C443E4575DE1A729A05A8A0A0@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="us-ascii"
A local told me the ISS repeater was on the air. Is that possible in
conjunction with the SSTV?
73,
Gary "Joe" kk0sd
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Greg D via AMSAT-BB
Sent: Tuesday, October 6, 2020 9:38 PM
To: Loren M. Lang <penguin359@?????.???>; AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Unusual ISS SSTV signal
I just heard something even weirder here during the just-completed 02:04z
pass here in CM98. 3 images during the pass, the first two totally wiped
out. The third started off just fine, then the interference started in.
I captured the screen and audio for the second and 3rd images here:
https://www.dropbox.com/s/jzlp9jzs4k29sy1/ISS%20SSTV%20Pass3-2020-10-06_19.08.
39.mp4?dl=1
I'm no where near where Loren is, so it's unlikely to be local. This is
with the same equipment and setup as two passes yesterday, which were
totally clean. The 8pm (PDT) pass yesterday was recorded for our local
club, and can be viewed here:
https://www.youtube.com/watch?v=Z_SkJ8_mtA4
Thoughts?
Greg KO6TH
Loren M. Lang via AMSAT-BB wrote:
> During one of the SSTV transmissions today, I heard an unusual signal
> overlaid on top of the regular SSTV signal. It started just after the
> original SSTV signal, and was initially quite strong, but eventually
> lost out to the regular SSTV signal. It sounds similar to SSTV, but
> not quite the same. This started at 2020-10-06 02:54:32Z. You can hear it
here:
>
> https://www.dropbox.com/s/abcizkoly8rn1ij/funny-sstv-signal.mp3?dl=0
>
> You can see the waterfall during the initial decode here:
>
> https://www.dropbox.com/s/dxmy4rhruiit84v/funny-sstv-signal.png?dl=0
>
> It does look like a separate signal on top of the original SSTV signal
> and it looks more centered on 145.800 MHz than the Doppler shifted ISS
> transmission which makes me thing it might be terrestrial, but I have
> no idea where it would be coming from. It definitely looks like it was
> targeting 145.8 and it sounds SSTV-like. The signal poped in several
> more times as can be seen in this waterfall:
>
> https://www.dropbox.com/s/gwh4h4b1d8qtnbv/funny-sstv-signal2.png?dl=0
>
> Any ideas what this came from?
>
> Here's the image I received during that pass:
>
> https://www.dropbox.com/s/j11wj6yo9s2ceg9/sstv-202010060311.png?dl=0
>
> I do have the raw baseband signal if anyone's interested.
>
> -Loren
> K7IW
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Tue, 6 Oct 2020 19:59:58 -0700
From: Greg D <ko6th.greg@?????.???>
To: Gary <gary_mayfield@???????.???>, "Loren M. Lang"
<penguin359@?????.???>, "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Unusual ISS SSTV signal
Message-ID: <ad179358-c06a-e5a3-e597-dc89a97dab4a@?????.???>
Content-Type: text/plain; charset=UTF-8
That was my first thought, but I'm presuming they're running from
separate power sources, and using separate antennas, in different
modules of the Station. If anything, the interference would be the
reverse, with the SSTV desensing the x-band repeater's uplink.
Also, my audio sounds rather different from Loren's, so perhaps
different (or degrading) situations?
Greg KO6TH
Gary wrote:
> A local told me the ISS repeater was on the air. Is that possible in
conjunction with the SSTV?
>
> 73,
> Gary "Joe" kk0sd
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Greg D via AMSAT-BB
> Sent: Tuesday, October 6, 2020 9:38 PM
> To: Loren M. Lang <penguin359@?????.???>; AMSAT BB <amsat-bb@?????.???>
> Subject: Re: [amsat-bb] Unusual ISS SSTV signal
>
> I just heard something even weirder here during the just-completed 02:04z
pass here in CM98. 3 images during the pass, the first two totally wiped
out. The third started off just fine, then the interference started in.
>
> I captured the screen and audio for the second and 3rd images here:
>
>
https://www.dropbox.com/s/jzlp9jzs4k29sy1/ISS%20SSTV%20Pass3-2020-10-06_19.08.
39.mp4?dl=1
>
> I'm no where near where Loren is, so it's unlikely to be local. This is
with the same equipment and setup as two passes yesterday, which were
totally clean. The 8pm (PDT) pass yesterday was recorded for our local
club, and can be viewed here:
>
> https://www.youtube.com/watch?v=Z_SkJ8_mtA4
>
> Thoughts?
>
> Greg KO6TH
>
>
> Loren M. Lang via AMSAT-BB wrote:
>> During one of the SSTV transmissions today, I heard an unusual signal
>> overlaid on top of the regular SSTV signal. It started just after the
>> original SSTV signal, and was initially quite strong, but eventually
>> lost out to the regular SSTV signal. It sounds similar to SSTV, but
>> not quite the same. This started at 2020-10-06 02:54:32Z. You can hear it
here:
>>
>> https://www.dropbox.com/s/abcizkoly8rn1ij/funny-sstv-signal.mp3?dl=0
>>
>> You can see the waterfall during the initial decode here:
>>
>> https://www.dropbox.com/s/dxmy4rhruiit84v/funny-sstv-signal.png?dl=0
>>
>> It does look like a separate signal on top of the original SSTV signal
>> and it looks more centered on 145.800 MHz than the Doppler shifted ISS
>> transmission which makes me thing it might be terrestrial, but I have
>> no idea where it would be coming from. It definitely looks like it was
>> targeting 145.8 and it sounds SSTV-like. The signal poped in several
>> more times as can be seen in this waterfall:
>>
>> https://www.dropbox.com/s/gwh4h4b1d8qtnbv/funny-sstv-signal2.png?dl=0
>>
>> Any ideas what this came from?
>>
>> Here's the image I received during that pass:
>>
>> https://www.dropbox.com/s/j11wj6yo9s2ceg9/sstv-202010060311.png?dl=0
>>
>> I do have the raw baseband signal if anyone's interested.
>>
>> -Loren
>> K7IW
>> _______________________________________________
>> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Tue, 6 Oct 2020 23:19:29 -0400
From: John Brier <johnbrier@?????.???>
To: Greg D <ko6th.greg@?????.???>
Cc: "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Unusual ISS SSTV signal
Message-ID:
<CALn0fKN=KNcFJ-TVpfFiiS0MWYOcw_=KkkLLv2SqmPBRMQmTqQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Reports suggest two SSTV transmissions at same time.
https://twitter.com/bobbylittle/status/1313665745734324225?s=19
Crossband is totally diff setup in diff ISS modules.
73, John Brier KG4AKV
On Tue, Oct 6, 2020, 23:04 Greg D via AMSAT-BB <amsat-bb@?????.???> wrote:
> That was my first thought, but I'm presuming they're running from
> separate power sources, and using separate antennas, in different
> modules of the Station. If anything, the interference would be the
> reverse, with the SSTV desensing the x-band repeater's uplink.
>
> Also, my audio sounds rather different from Loren's, so perhaps
> different (or degrading) situations?
>
> Greg KO6TH
>
>
> Gary wrote:
> > A local told me the ISS repeater was on the air. Is that possible in
> conjunction with the SSTV?
> >
> > 73,
> > Gary "Joe" kk0sd
> >
> > -----Original Message-----
> > From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Greg D via
> AMSAT-BB
> > Sent: Tuesday, October 6, 2020 9:38 PM
> > To: Loren M. Lang <penguin359@?????.???>; AMSAT BB <amsat-bb@?????.???>
> > Subject: Re: [amsat-bb] Unusual ISS SSTV signal
> >
> > I just heard something even weirder here during the just-completed
> 02:04z pass here in CM98. 3 images during the pass, the first two totally
> wiped out. The third started off just fine, then the interference started
> in.
> >
> > I captured the screen and audio for the second and 3rd images here:
> >
> >
>
https://www.dropbox.com/s/jzlp9jzs4k29sy1/ISS%20SSTV%20Pass3-2020-10-06_19.08.
39.mp4?dl=1
> >
> > I'm no where near where Loren is, so it's unlikely to be local. This is
> with the same equipment and setup as two passes yesterday, which were
> totally clean. The 8pm (PDT) pass yesterday was recorded for our local
> club, and can be viewed here:
> >
> > https://www.youtube.com/watch?v=Z_SkJ8_mtA4
> >
> > Thoughts?
> >
> > Greg KO6TH
> >
> >
> > Loren M. Lang via AMSAT-BB wrote:
> >> During one of the SSTV transmissions today, I heard an unusual signal
> >> overlaid on top of the regular SSTV signal. It started just after the
> >> original SSTV signal, and was initially quite strong, but eventually
> >> lost out to the regular SSTV signal. It sounds similar to SSTV, but
> >> not quite the same. This started at 2020-10-06 02:54:32Z. You can hear
> it here:
> >>
> >> https://www.dropbox.com/s/abcizkoly8rn1ij/funny-sstv-signal.mp3?dl=0
> >>
> >> You can see the waterfall during the initial decode here:
> >>
> >> https://www.dropbox.com/s/dxmy4rhruiit84v/funny-sstv-signal.png?dl=0
> >>
> >> It does look like a separate signal on top of the original SSTV signal
> >> and it looks more centered on 145.800 MHz than the Doppler shifted ISS
> >> transmission which makes me thing it might be terrestrial, but I have
> >> no idea where it would be coming from. It definitely looks like it was
> >> targeting 145.8 and it sounds SSTV-like. The signal poped in several
> >> more times as can be seen in this waterfall:
> >>
> >> https://www.dropbox.com/s/gwh4h4b1d8qtnbv/funny-sstv-signal2.png?dl=0
> >>
> >> Any ideas what this came from?
> >>
> >> Here's the image I received during that pass:
> >>
> >> https://www.dropbox.com/s/j11wj6yo9s2ceg9/sstv-202010060311.png?dl=0
> >>
> >> I do have the raw baseband signal if anyone's interested.
> >>
> >> -Loren
> >> K7IW
> >> _______________________________________________
> >> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> > _______________________________________________
> > Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 6
Date: Tue, 6 Oct 2020 23:51:33 -0400
From: John Brier <johnbrier@?????.???>
To: Greg D <ko6th.greg@?????.???>
Cc: "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Unusual ISS SSTV signal
Message-ID:
<CALn0fKMbsTqmPKHg84vOoVAaGXNaO2iPtf-bbXqFW6qpUp-VPQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Two active. SSTV is in Russian service module. New radio doing crossband is
in Columbus module.
On Tue, Oct 6, 2020, 23:26 Greg D <ko6th.greg@?????.???> wrote:
> Possibly, but the interference isn't at the audio level; it sounds more
> like an FM double to me.
>
> How many ham stations do they have up there?
>
> Greg KO6TH
>
>
> John Brier wrote:
>
> Reports suggest two SSTV transmissions at same time.
>
> https://twitter.com/bobbylittle/status/1313665745734324225?s=19
>
> Crossband is totally diff setup in diff ISS modules.
>
> 73, John Brier KG4AKV
>
> On Tue, Oct 6, 2020, 23:04 Greg D via AMSAT-BB <amsat-bb@?????.???> wrote:
>
>> That was my first thought, but I'm presuming they're running from
>> separate power sources, and using separate antennas, in different
>> modules of the Station. If anything, the interference would be the
>> reverse, with the SSTV desensing the x-band repeater's uplink.
>>
>> Also, my audio sounds rather different from Loren's, so perhaps
>> different (or degrading) situations?
>>
>> Greg KO6TH
>>
>>
>> Gary wrote:
>> > A local told me the ISS repeater was on the air. Is that possible in
>> conjunction with the SSTV?
>> >
>> > 73,
>> > Gary "Joe" kk0sd
>> >
>> > -----Original Message-----
>> > From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Greg D via
>> AMSAT-BB
>> > Sent: Tuesday, October 6, 2020 9:38 PM
>> > To: Loren M. Lang <penguin359@?????.???>; AMSAT BB <amsat-bb@?????.???>
>> > Subject: Re: [amsat-bb] Unusual ISS SSTV signal
>> >
>> > I just heard something even weirder here during the just-completed
>> 02:04z pass here in CM98. 3 images during the pass, the first two totally
>> wiped out. The third started off just fine, then the interference started
>> in.
>> >
>> > I captured the screen and audio for the second and 3rd images here:
>> >
>> >
>>
https://www.dropbox.com/s/jzlp9jzs4k29sy1/ISS%20SSTV%20Pass3-2020-10-06_19.08.
39.mp4?dl=1
>> >
>> > I'm no where near where Loren is, so it's unlikely to be local. This
>> is with the same equipment and setup as two passes yesterday, which were
>> totally clean. The 8pm (PDT) pass yesterday was recorded for our local
>> club, and can be viewed here:
>> >
>> > https://www.youtube.com/watch?v=Z_SkJ8_mtA4
>> >
>> > Thoughts?
>> >
>> > Greg KO6TH
>> >
>> >
>> > Loren M. Lang via AMSAT-BB wrote:
>> >> During one of the SSTV transmissions today, I heard an unusual signal
>> >> overlaid on top of the regular SSTV signal. It started just after the
>> >> original SSTV signal, and was initially quite strong, but eventually
>> >> lost out to the regular SSTV signal. It sounds similar to SSTV, but
>> >> not quite the same. This started at 2020-10-06 02:54:32Z. You can hear
>> it here:
>> >>
>> >> https://www.dropbox.com/s/abcizkoly8rn1ij/funny-sstv-signal.mp3?dl=0
>> >>
>> >> You can see the waterfall during the initial decode here:
>> >>
>> >> https://www.dropbox.com/s/dxmy4rhruiit84v/funny-sstv-signal.png?dl=0
>> >>
>> >> It does look like a separate signal on top of the original SSTV signal
>> >> and it looks more centered on 145.800 MHz than the Doppler shifted ISS
>> >> transmission which makes me thing it might be terrestrial, but I have
>> >> no idea where it would be coming from. It definitely looks like it was
>> >> targeting 145.8 and it sounds SSTV-like. The signal poped in several
>> >> more times as can be seen in this waterfall:
>> >>
>> >> https://www.dropbox.com/s/gwh4h4b1d8qtnbv/funny-sstv-signal2.png?dl=0
>> >>
>> >> Any ideas what this came from?
>> >>
>> >> Here's the image I received during that pass:
>> >>
>> >> https://www.dropbox.com/s/j11wj6yo9s2ceg9/sstv-202010060311.png?dl=0
>> >>
>> >> I do have the raw baseband signal if anyone's interested.
>> >>
>> >> -Loren
>> >> K7IW
>> >> _______________________________________________
>> >> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>> > _______________________________________________
>> > Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>>
>
>
------------------------------
Message: 7
Date: Tue, 6 Oct 2020 19:03:07 -0400
From: Burns Fisher <wb1fj-bb@??????.??>
To: "Mark L. Hammond" <marklhammond@?????.???>
Cc: Amsat - BBs <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox Telemetry antenna?
Message-ID:
<CABX7KxWaehmx9qu2+3d66=kuDoYPsKpKkMgwhOs2youPv0DdMw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Interesting....I use a Lindenblad on one receiver and a J-pole on
another, both with a wide-band preamp. They are both good enough to get me
in the top 20 on the leaderboard, I suspect partly because I can just leave
them without thinking about them. Certainly I get more packets when I
throw the switches and use my LEO-pack and G5500, but still not bad. And I
don't have to worry about physical wear and tear on anything.
One thing is that I have very little QRM around here, so more direction and
more filtering might be far better for some. But feel free to compare
WB1FJ* vs say N8MH on the leaderboard. Mark certainly has a lot more, but
I don't think the omni is horrible!
73
Burns WB1FJ
On Tue, Oct 6, 2020 at 6:48 PM Mark L. Hammond via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Hi Bob, I have found that a parked yagi yields more telemetry than an
> omini. And for a Fox satellite, pointing N or S works pretty well; pick
> the better horizon/less obstruction view!
>
> Mark L. Hammond [N8MH]
> AMSAT Director and Command Station
>
>
>
> On Tue, Oct 6, 2020 at 5:39 PM Bob Hammond via AMSAT-BB <
> amsat-bb@?????.???>
> wrote:
>
> > So, can I just park my LEO antennas south just a bit above the horizon
> for
> > dedicated telemetry collection when not using them for sat ops?
> >
> > Bob W7OTJ
> >
> > On Tue, Oct 6, 2020 at 1:49 PM Stephen E. Belter via AMSAT-BB <
> > amsat-bb@?????.???> wrote:
> >
> > > Kevin,
> > >
> > > I'm in West Lafayette, Indiana, so no salt water. My antennas are
> > > M-squared medium size antennas, 2MCP14 and 436CP30 with polarity
> > switches,
> > > so not overloaded.
> > >
> > > Mark N8MH, has had similar experience with his Yaesu's. Since he is a
> > > dedicated telemetry collector like you, and since he is a control
> > operator
> > > for the Fox satellites, he replaces his rotors when they fail. He had
> a
> > > volunteer to repair his broken rotors, so I transported 6-8 rotors from
> > his
> > > garage in North Carolina (not near salt water either) to Indiana. Half
> > > were elevation rotors, half were azimuth rotors. I thought I was just
> > > having bad luck until Mark shared his experience.
> > >
> > > The last time mine failed, it was the azimuth rotor. Pointing the
> Yagis
> > > south just above the horizon worked a little better (long term) than an
> > > omnidirectional antenna. Since it failed while I was on a 3 month
> trip,
> > I
> > > couldn't replace the rotor.
> > >
> > > I still recommend the G5500 rotors for normal operators, but they may
> not
> > > be the best choice for 24x7x365 telemetry collection. (I'm glad they
> > work
> > > for you in that mode.) I've since switched to an AlphaSpid rotor with
> a
> > > Green Heron controller. You can buy the AlphaSpid rotors without the
> > > controller (my recommendation for heavy duty use) and use a Green Heron
> > > instead.
> > >
> > > Still: YMMV
> > >
> > > 73, Steve N9IP
> > > --
> > > Steve Belter, seb@??????.???
> > >
> > >
> > > ?On 10/6/20, 3:53 PM, "AMSAT-BB on behalf of Kevin via AMSAT-BB" <
> > > amsat-bb-bounces@?????.??? on behalf of amsat-bb@?????.???> wrote:
> > >
> > > Steve,
> > > What are you doing that is wearing it out in 4-8 months?
> > > overloaded?
> > > near the ocean with salt? something has to be wrong as mine go for
> > > years.
> > >
> > > 73 Kevin WA7FWF
> > >
> > > On 10/6/2020 10:21 AM, Stephen E. Belter via AMSAT-BB wrote:
> > > > Roy,
> > > >
> > > > In my experience, using the CP antennas with the G5500 will help
> > you
> > > collect and decode about 4-6 times more packets than an omnidirectional
> > > antenna.
> > > >
> > > > But tracking the Fox satellites using the Yaesu rotors will wear
> > out
> > > the rotors in 4-8 months. Replacement rotors are about $250 each (you
> > won?t
> > > need to replace the controller).
> > > >
> > > > YMMV
> > > >
> > > > 73, Steve N9IP
> > > > --
> > > > Steve Belter, seb@??????.???
> > > >
> > > >
> > > >
> > >
> > > _______________________________________________
> > > Sent via AMSAT-BB@?????.???. 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:
> > https://www.amsat.org/mailman/listinfo/amsat-bb
> > >
> > > _______________________________________________
> > > Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> > >
> > _______________________________________________
> > Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> >
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@?????.???.
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!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 15, Issue 403
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