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CX2SA > SATDIG 01.05.20 16:19l 492 Lines 16383 Bytes #999 (0) @ WW
BID : AMSATBB15130
Read: GUEST
Subj: AMSAT-BB-digest V15 130
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Sent: 200428/1930Z @:CX2SA.SAL.URY.SOAM #:30085 [Salto] FBB7.00e $:AMSATBB15130
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Repeater interference on AO-92 (Eric Williams)
2. Re: Repeater interference on AO-92 (nathanjwhite)
3. Re: Repeater interference on AO-92 (Eric Williams)
4. Re: Repeater interference on AO-92 (Mark L. Hammond)
5. Repeater interference on AO-92 (Roy Dean)
6. Re: Repeater interference on AO-92 (Leffke, Zachary)
7. Re: Repeater interference on AO-92 (Zach Metzinger)
8. Re: Repeater interference on AO-92 (Steve Kristoff)
9. Re: Repeater interference on AO-92 (Steve Kristoff)
10. NASA NEWS - Lunar Flashlight mission - CUBESAT TECH
(christy hunter)
11. First signals from Quetzal-1 (Roland Zurmely)
12. Re: Repeater interference on AO-92 (Stephen DeVience)
13. AO-92 Images (Tom Matthews)
14. Re: AO-92 Images (Robert Switzer)
15. Re: AO-92 Images (Tom Matthews)
----------------------------------------------------------------------
Message: 1
Date: Tue, 28 Apr 2020 10:51:29 -0400
From: "Eric Williams" <kv1j@???????.???>
To: <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Repeater interference on AO-92
Message-ID: <000001d61d6c$8089db40$819d91c0$@???????.???>
Content-Type: text/plain; charset="us-ascii"
I am in the area of a suspected repeater. Also in the area of the towns
mentioned to could be that machine. I'll watch for the next AO-92 pass and
announce my call of the repeater a few times and listen to AO-92. So if you
hear "KV1J" it is me testing for the interference. I have not looked at the
pass schedule yet but I can try a couple passes.
73, Eric KV1J FN42
------------------------------
Message: 2
Date: Tue, 28 Apr 2020 15:04:49 +0000 (UTC)
From: nathanjwhite <nathanjwhite@????????.???>
To: Eric Williams <kv1j@???????.???>, <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Repeater interference on AO-92
Message-ID: <2129400971.1593659.1588086289372@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Maybe listen on the uplink frequency? My first impression was that it
sounded like guys on simplex with BaoFengs and the courtesy tone left on.
Could be they picked a frequency away from area repeaters and use it without
a care. To cover?20 miles around the city they?d probably have the power up
high enough to key the bird.?Stranger things have happened.
NateN5LEX
On Tuesday, April 28, 2020, 10:51 AM, Eric Williams via AMSAT-BB
<amsat-bb@?????.???> wrote:
I am in the area of a suspected repeater. Also in the area of the towns
mentioned to could be that machine.? I'll watch for the next AO-92 pass and
announce my call of the repeater a few times and listen to AO-92.? So if you
hear "KV1J" it is me testing for the interference.? I have not looked at the
pass schedule yet but I can try a couple passes.
73,? Eric? KV1J? FN42
_______________________________________________
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.
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------------------------------
Message: 3
Date: Tue, 28 Apr 2020 11:14:09 -0400
From: "Eric Williams" <kv1j@???????.???>
To: <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Repeater interference on AO-92
Message-ID: <000601d61d6f$abaff860$030fe920$@???????.???>
Content-Type: text/plain; charset="us-ascii"
Yes, I am also listening to the uplink freq. Next pass is in about 1 hour.
73 Eric KV1J
(I use digest mode for this list so pardon the not including the string of
messages)
-----Original Message-----
From: Eric Williams [mailto:kv1j@???????.????
Sent: Tuesday, April 28, 2020 10:51 AM
To: 'amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: RE: Repeater interference on AO-92
I am in the area of a suspected repeater. Also in the area of the towns
mentioned to could be that machine. I'll watch for the next AO-92 pass and
announce my call of the repeater a few times and listen to AO-92. So if you
hear "KV1J" it is me testing for the interference. I have not looked at the
pass schedule yet but I can try a couple passes.
73, Eric KV1J FN42
------------------------------
Message: 4
Date: Tue, 28 Apr 2020 11:24:53 -0400
From: "Mark L. Hammond" <marklhammond@?????.???>
To: Eric Williams <kv1j@???????.???>
Cc: Amsat - BBs <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Repeater interference on AO-92
Message-ID:
<CAPRXzypR-_63YEqVtL0X_QkhaxRABF_MF7F8msa1eDC79BaTDQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
The next AO-92 pass should be camera mode!! Help collect frames, folks!
Mark N8MH
On Tue, Apr 28, 2020 at 10:51 AM Eric Williams via AMSAT-BB <
amsat-bb@?????.???> wrote:
> I am in the area of a suspected repeater. Also in the area of the towns
> mentioned to could be that machine. I'll watch for the next AO-92 pass and
> announce my call of the repeater a few times and listen to AO-92. So if
> you
> hear "KV1J" it is me testing for the interference. I have not looked at
> the
> pass schedule yet but I can try a couple passes.
> 73, Eric KV1J FN42
>
> _______________________________________________
> 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
>
--
Mark L. Hammond [N8MH]
------------------------------
Message: 5
Date: Tue, 28 Apr 2020 11:24:54 -0400
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Repeater interference on AO-92
Message-ID:
<CADGPg2tQqjF_2ad6MEaBMawCm5gU0UGs5U24-vNaGXQ6maZLkA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
>
> Yes, I am also listening to the uplink freq. Next pass is in about 1 hour.
> 73 Eric KV1J
Keep in mind that somebody may be commanding it into picture mode.
--Roy
K3RLD
------------------------------
Message: 6
Date: Tue, 28 Apr 2020 15:49:21 +0000
From: "Leffke, Zachary" <zleffke@??.???>
To: "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Repeater interference on AO-92
Message-ID:
<MN2PR05MB7037909245D237BD286AEDB8DFAC0@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="us-ascii"
Not to get too far off topic, but this is the kind of thing that an SDR in
orbit could help hunt down. Imagine one of the GOLFs, with is SDR
capability.....send a few commands, and now we have a bent pipe transponder
on the frequency of interest, maybe routed maybe to an S or X Band downlink
(or both), plop a carrier next to the relayed passband to aid in Doppler
tracking. Record a pass with the FM interferer transmitting, using TLEs (or
better orbit data if available) reverse out the Doppler between monitoring
GS and the bird, then look for the inflection point in the
S-curve....there's Time of closest approach.....draw the ground track and at
TCA, draw lines at right angles to the ground track....transmitter lies on
that line. Do that for a few passes (or with multiple receivers, i.e. both
GOLFs) and you get intersecting lines...there's your huckleberry. Even
better, if there is IQ storage capacity on the birds, time it to record over
the region of interest, and downlink the di
gital IQ at some later time (say over X-band at high rate). This removes
channel effects of the downlink and removes the need to be in the same
footprint to receive the interferer.
Similar situation and geolocation was done via FO-29 in previous years, but
that was because the uplink happened to lie in the passband of FO-29.
Essentially the same algorithms as the original SARSAT system before the
advent of GPS. With something like the GOLF series, we could actively 'go
on the hunt' and control things a lot better.
Also, for the record, I don't know if this is actually a capability being
designed into GOLF. Just using GOLF as the example of Amateur SDRs in orbit
and yet another novel application. My little 'send a few commands' note
above completely obscures how complex something like this could wind up
being (especially if storage capabilities are included)....but fun to think
about!
-Zach, KJ4QLP
--
Research Associate
Aerospace & Ocean Systems Lab
Ted & Karyn Hume Center for National Security & Technology
Virginia Polytechnic Institute & State University
Work Phone: 540-231-4174
Cell Phone: 540-808-6305
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Roy Dean via AMSAT-BB
Sent: Tuesday, April 28, 2020 11:25 AM
To: amsat-bb@?????.???
Subject: [amsat-bb] Repeater interference on AO-92
>
> Yes, I am also listening to the uplink freq. Next pass is in about 1 hour.
> 73 Eric KV1J
Keep in mind that somebody may be commanding it into picture mode.
--Roy
K3RLD
_______________________________________________
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, 28 Apr 2020 10:54:41 -0500
From: Zach Metzinger <zmetzing@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Repeater interference on AO-92
Message-ID: <f60466d1-adb5-1c7c-6716-c6376793acd8@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
On 04/28/20 10:14, Eric Williams via AMSAT-BB wrote:
> (I use digest mode for this list so pardon the not including the string of
> messages)
Thank you! Trimming down reply quotes saves time and bandwidth.
--- Zach
N0ZGO
------------------------------
Message: 8
Date: Tue, 28 Apr 2020 12:20:04 -0400
From: "Steve Kristoff" <skristof@???????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Repeater interference on AO-92
Message-ID: <be2d777a8e61c7895a5f4d81962c7fa9@???????.???>
Content-Type: text/plain; charset=UTF-8
?Wow! Just tried the last AO-92 pass. Sounds like we've lost the use of that
satellite until we get the interference thing straightened. Heard regular
interference for the whole pass here in EM79.
Steve AI9IN
EM79ji
Oldenburg IN
------------------------------
Message: 9
Date: Tue, 28 Apr 2020 12:22:12 -0400
From: "Steve Kristoff" <skristof@???????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Repeater interference on AO-92
Message-ID: <6c37b02eca437f804e007b8716b6e4a6@???????.???>
Content-Type: text/plain; charset=UTF-8
?Well, I just read the prior messages about camera mode. That's what I was
hearing. So, never mind.
Steve AI9IN
----- Original Message -----
------------------------------
Message: 10
Date: Tue, 28 Apr 2020 09:40:00 -0700
From: christy hunter <cchunter3@??????????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] NASA NEWS - Lunar Flashlight mission - CUBESAT
TECH
Message-ID: <a8d3d1fd-4ba1-aba0-50e1-be8b39f46115@??????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
FYI - NASA CUBESAT NEWS
https://www.jpl.nasa.gov/news/news.php?feature=7647&utm_source=iContact&utm_me
dium=email&utm_campaign=nasajpl&utm_content=daily20200427-1
73 Christy KB6LTY
------------------------------
Message: 11
Date: Tue, 28 Apr 2020 17:22:43 +0000 (UTC)
From: Roland Zurmely <py4zbz@?????.???>
To: AMSAT <amsat-bb@?????.???>
Subject: [amsat-bb] First signals from Quetzal-1
Message-ID: <1083626630.1112762.1588094563682@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Please see here:
<?https://www.qsl.net/py4zbz/quetzal.htm ?>
73s de Roland PY4ZBZ
------------------------------
Message: 12
Date: Tue, 28 Apr 2020 14:39:26 -0400
From: Stephen DeVience <sjdevience@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Repeater interference on AO-92
Message-ID:
<CAMPfQQA+wmcvWC7NQdT2KB-hBgKp0w8O+pO1+kX9jW=Q2mDhAA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
*Not to get too far off topic, but this is the kind of thing that an
SDR in orbit could help hunt down. Imagine one of the GOLFs, with is
SDR capability.....*
Yes, with its very own NROL-37, AMSAT could make enough money to put a
lot of satellites in orbit! Speaking of which, I'm sure there's a
recording of the interfering stations *somewhere* already.
KV1J, that would be awesome to test. Even just recording the repeater
output if someone is talking during the pass might allow it to be
correlated with a satellite recording. I was going to try on echolink,
but it looks like the nodes are down. Maybe leave a radio on the input
frequency sometime as well to see if anyone on baofengs shows up.
-Stephen, N8URE
------------------------------
Message: 13
Date: Tue, 28 Apr 2020 14:15:08 -0500
From: Tom Matthews <k5saf.tx@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] AO-92 Images
Message-ID:
<CAOD_qbUg-dEPUzi0T6ALbU3z61Y0sFV1pgyVRVA6XShiPdV29w@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Thinking of AO-82 - Be sure to check out these fantastic images from today:
https://www.amsat.org/tlm/showImages.php?id=4
--
Tom K5SAF
------------------------------
Message: 14
Date: Tue, 28 Apr 2020 19:20:05 +0000 (UTC)
From: Robert Switzer <rs2atmink@?????.???>
To: AMSAT BB <amsat-bb@?????.???>, Tom Matthews <k5saf.tx@?????.???>
Subject: Re: [amsat-bb] AO-92 Images
Message-ID: <1373037163.1748863.1588101605210@????.?????.???>
Content-Type: text/plain; charset=UTF-8
AO-82... new satellite?
On Tuesday, April 28, 2020, 3:17:09 PM EDT, Tom Matthews via AMSAT-BB
<amsat-bb@?????.???> wrote:
Thinking of AO-82 - Be sure to check out these fantastic images from today:
https://www.amsat.org/tlm/showImages.php?id=4
--
Tom K5SAF
_______________________________________________
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: 15
Date: Tue, 28 Apr 2020 14:24:49 -0500
From: Tom Matthews <k5saf.tx@?????.???>
To: Robert Switzer <robert_switzer@???.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AO-92 Images
Message-ID:
<CAOD_qbV4N=mpBejekGBSPFZ2_gUrxJGs565M2tRzKPscKmQnkQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Wow Typo of course guys - AO-92
Too much screen time...
On Tue, Apr 28, 2020 at 2:20 PM Robert Switzer <rs2atmink@?????.???> wrote:
> AO-82... new satellite?
>
> On Tuesday, April 28, 2020, 3:17:09 PM EDT, Tom Matthews via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
>
> Thinking of AO-82 - Be sure to check out these fantastic images from today:
> https://www.amsat.org/tlm/showImages.php?id=4
>
> --
> Tom K5SAF
> _______________________________________________
> 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
>
--
Tom K5SAF
------------------------------
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 130
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