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CX2SA > SATDIG 09.09.19 21:04l 865 Lines 29427 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Echostar 9 test cards (Edward R Cole)
2. PSAT2 Anomaly? (Robert Bruninga)
3. Re: Echostar 9 test cards (Robert Bruninga)
4. Re: Echostar 9 test cards (Paul Stoetzer)
5. Re: G-5500 az rotor failure (k.swaggart@???????.????
6. Re: G-5500 az rotor failure (Robert MacHale)
7. Re: PSAT2 Anomaly? (Scott)
8. Re: Echostar 9 test cards (John Kludt)
9. Re: PSAT2 Anomaly? (Scott)
10. Re: PSAT2 Anomaly? (KE6BLR Robert)
11. Re: PSAT2 Anomaly? (Robert Bruninga)
----------------------------------------------------------------------
Message: 1
Date: Fri, 23 Aug 2019 10:59:59 -0800
From: Edward R Cole <kl7uw@?????????.???>
To: AMSAT-BB@?????.???
Subject: Re: [amsat-bb] Echostar 9 test cards
Message-ID: <201908231900.x7NJ0GgY025501@?????????.???????????.???>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Bob and all:
A good source of info on using ku-band TVRO LNA's for ham use on
10-GHz is from several eme hams who use them. My guess the LNA's are
broadbanded that requires no modification of tuned input ckts to
operate at 10-GHz. Since you application may be on the original
sat-TV band frequency they may perform optimally. I am not sure if
they also downconvert to an IF. My experience was with C-band sat-TV
which used LNB's to amplify 3400-3750 MHz and downconvert to 950-1400 MHz.
GL with exploring ham use of Echostar-9.
I have plans to build a 10-MHz eme station using my 1.8m surplus
off-set feed sat-TV dish (used starting in 1996 in AK on Direct-TV).
73, Ed - KL7UW
Not QRV for Leo sats
Date: Fri, 23 Aug 2019 09:31:08 -0400
From: Robert Bruninga <bruninga@????.???>
To: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Echostar 9 test cards
Message-ID: <df6594fa700d9fd2b5645815a35c16f7@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I actually am excited about the prospect of using LNA's from all these
throw-away Dish network dishes for something. It's a great educational
opportunity. I am happy to tune in anything that is interesting from a
technical perspective and I really love making stuff from cast-off stuff.
Bob, WB4APR
73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
dubususa@?????.???
------------------------------
Message: 2
Date: Fri, 23 Aug 2019 17:51:41 -0400
From: Robert Bruninga <bruninga@????.???>
To: AMSAT-BB <AMSAT-BB@?????.???>
Subject: [amsat-bb] PSAT2 Anomaly?
Message-ID: <e9c21372a432e31f91f18c22b9c208ca@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
The usual PSAT2 downlink stopped after 0809z today in a pass over SE USA.
Ground Stations are fine because its sister, USNAP1, is still downlinking
via the usual ground stations.
Both downlinks visible on http://aprs.org/sats.html
A cessation of our Amateur packet telemetry design has never happened in 18
years in space over 6 successful spacecraft other than the occasional low
power crash which is fixed after the next eclipse on the next pass or so.
But never a complete cessation.
Since the UHF side is independent, we welcome folks to listen to the UHF
downlink 435.350 +/- Doppler and verify if that is working. Remember, it
must be in daylight for the SSTV downlink to be on.
Fortunately we do have one report of an SSTV image at 1340z from Gustave
LW2DTZ. If we have another confirmation that UHF has been heard, then we
can rule out a possible collision with space debris. (we get notificaitons
of near conjunctions passing within 500m about every day or so, but after 18
years we have come to ignore them. Maybe this one hit?
And it was working so well!
Bob, WB4APR
------------------------------
Message: 3
Date: Fri, 23 Aug 2019 17:55:55 -0400
From: Robert Bruninga <bruninga@????.???>
To: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Echostar 9 test cards
Message-ID: <4ea1bc471cd8d193152f45a59cc88d01@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hummh,
I guess then using GPS for other AMSAT applications are not welcome either
since GPS is also not in the ham bands?
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Tucker McGuire
via AMSAT-BB
Subject: Re: [amsat-bb] Echostar 9 test cards
Except, this is a bulletin for amateur radio satellites, which echostar is
not. Maybe go find a commercial sat fan page if you want to talk about
commercial GEO's.
---Tucker
W4FS
On Fri, Aug 23, 2019, 12:07 PM Ev Tupis via AMSAT-BB <amsat-bb@?????.???>
wrote:
> I am too, Bob! I'm amazed how many people feel compelled to tell
> "accomplishers" that they "do it wrong". I say, "If you don't like
> it, press [Delete] and move on".
>
> Ev
>
> On Friday, August 23, 2019, 09:46:10 AM EDT, Robert Bruninga via
> AMSAT-BB <amsat-bb@?????.???> wrote:
>
> I actually am excited about the prospect of using LNA's from all
> these throw-away Dish network dishes for something. It's a great
> educational opportunity. I am happy to tune in anything that is
> interesting from a technical perspective and I really love making stuff
from cast-off stuff.
>
> Bob, WB4APR
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Dave Webb
> KB1PVH via AMSAT-BB
> Subject: Re: [amsat-bb] Echostar 9 test cards
>
> EXACTLY how do these posts about Echostar 9 relate to amateur
> satellites other than it being someone's pipedream?
>
> Dave-KB1PVH
>
>
> On Fri, Aug 23, 2019, 8:58 AM KC9SGV via AMSAT-BB <amsat-bb@?????.???>
> wrote:
>
> > Some Echostar 9, 12 GHz TV channels and test cards are shown here.
> > Scroll down.
> >
> > https://www.lyngsat.com/EchoStar-9-Galaxy-23.html
> >
> > KC9SGV
> _______________________________________________
> 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: 4
Date: Fri, 23 Aug 2019 18:36:33 -0400
From: Paul Stoetzer <n8hm@????.???>
To: Robert Bruninga <bruninga@????.???>
Cc: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Echostar 9 test cards
Message-ID:
<CABzOSOqxhCfDqp93t3srGANDc8_q7AEqSs1MAS0BbaYieFdTVw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Bob,
I don't think anyone has suggested that. Obviously GPS has some very
important applications for amateur satellites (and even connections to
AMSAT history - see the GPS experiment on AO-40 that influenced some
of the design of the Block III GPS satellites).
To me, the idea of amateurs purchasing commercial spectrum is a
terrible idea that establishes a very poor precedent. We have billions
of dollars worth of our own spectrum to utilize for our communications
experiments. Rather than renting commercial spectrum let's devote our
limited resources towards the AMSAT GOLF program, for a sustainable
path to high orbits utilizing microwave bands, software defined
transponders, and other cutting edge technologies. For even more of a
technical challenge, we have the prospect of amateur radio on Lunar
Gateway.
73,
Paul, N8HM
On Fri, Aug 23, 2019 at 5:56 PM Robert Bruninga via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> Hummh,
> I guess then using GPS for other AMSAT applications are not welcome either
> since GPS is also not in the ham bands?
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Tucker McGuire
> via AMSAT-BB
> Subject: Re: [amsat-bb] Echostar 9 test cards
>
> Except, this is a bulletin for amateur radio satellites, which echostar is
> not. Maybe go find a commercial sat fan page if you want to talk about
> commercial GEO's.
>
> ---Tucker
> W4FS
>
> On Fri, Aug 23, 2019, 12:07 PM Ev Tupis via AMSAT-BB <amsat-bb@?????.???>
> wrote:
>
> > I am too, Bob! I'm amazed how many people feel compelled to tell
> > "accomplishers" that they "do it wrong". I say, "If you don't like
> > it, press [Delete] and move on".
> >
> > Ev
> >
> > On Friday, August 23, 2019, 09:46:10 AM EDT, Robert Bruninga via
> > AMSAT-BB <amsat-bb@?????.???> wrote:
> >
> > I actually am excited about the prospect of using LNA's from all
> > these throw-away Dish network dishes for something. It's a great
> > educational opportunity. I am happy to tune in anything that is
> > interesting from a technical perspective and I really love making stuff
> from cast-off stuff.
> >
> > Bob, WB4APR
> >
> > -----Original Message-----
> > From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Dave Webb
> > KB1PVH via AMSAT-BB
> > Subject: Re: [amsat-bb] Echostar 9 test cards
> >
> > EXACTLY how do these posts about Echostar 9 relate to amateur
> > satellites other than it being someone's pipedream?
> >
> > Dave-KB1PVH
> >
> >
> > On Fri, Aug 23, 2019, 8:58 AM KC9SGV via AMSAT-BB <amsat-bb@?????.???>
> > wrote:
> >
> > > Some Echostar 9, 12 GHz TV channels and test cards are shown here.
> > > Scroll down.
> > >
> > > https://www.lyngsat.com/EchoStar-9-Galaxy-23.html
> > >
> > > KC9SGV
> > _______________________________________________
> > 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: 5
Date: Fri, 23 Aug 2019 16:49:28 -0700
From: <k.swaggart@???????.???>
To: "AMSAT-BB" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] G-5500 az rotor failure
Message-ID: <018701d55a0d$67bc0e30$37342a90$@???????.???>
Content-Type: text/plain; charset="us-ascii"
The problem turned out to be a loose setscrew at the motor. Easy fix, but
took about four hours to reassemble the rotor so the limit switch was
tripped correctly and then get the antennas reattached. Anyway, back in
business.
I took quite a few photos of the az rotor disassembly and I'll add them to
my G5500 page within the next few days:
http://www.ocrg.org/W7KKE/rotor/rotor.html
73,
Ken, W7KKE
From: k.swaggart@???????.??? <k.swaggart@???????.???>
Sent: Friday, August 23, 2019 10:39
To: AMSAT-BB (amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: G-5500 az rotor failure
This morning I found my G-5500 will not move left or right. Not even a
wiggle. Took some measurements and the wiring appears to be intact but I
don't understand the 40 Vac readings when the rotor is connected to the
control box. Here are my readings taken at the control box end of the
wiring:
Rotor connected to control box:
Common (pin 6) to Left (pin 4) Press Left: 28 Vac Right: 40 Vac
Common (pin 6) to Right (pin 5) Press Left: 40 Vac Right: 28 Vac
Rotor disconnected. Measuring control box terminals:
Pin 6 to 4 Press Left: 29.5 Vac Press right: 0
Pin 6 to 5 Press Left: 0 Press Right: 29.5 Vac
Measuring rotor cable at control box, disconnected from box:
6 (brown) to 4 (blue) 5.3 Ohms
6 (brown) to 5 (orange) 5.3 Ohms
4 (blue) to 5 (orange) 8.9 Ohms
Any suggestions before I pull the rotor off the mast?
73,
Ken, W7KKE
------------------------------
Message: 6
Date: Fri, 23 Aug 2019 23:54:24 +0000 (UTC)
From: Robert MacHale <robert.machale@?????.???>
To: AMSAT-BB <amsat-bb@?????.???>, <k.swaggart@???????.???>
Subject: Re: [amsat-bb] G-5500 az rotor failure
Message-ID: <815315654.2183412.1566604464531@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Great News! Glad to hear.
Robert MacHale. KE6BLR Ham Radio License.?http://spaceCommunicator.club/aprs?
. Supporting Boy Scout Merit Badges in Radio, Robotics, and Space Exploration
On Friday, August 23, 2019, 4:51:23 PM PDT, Ken Swaggart W7KKE via
AMSAT-BB <amsat-bb@?????.???> wrote:
The problem turned out to be a loose setscrew at the motor. Easy fix, but
took about four hours to reassemble the rotor so the limit switch was
tripped correctly and then get the antennas reattached. Anyway, back in
business.
I took quite a few photos of the az rotor disassembly and I'll add them to
my G5500 page within the next few days:
http://www.ocrg.org/W7KKE/rotor/rotor.html
73,
Ken, W7KKE
From: k.swaggart@???????.??? <k.swaggart@???????.???>
Sent: Friday, August 23, 2019 10:39
To: AMSAT-BB (amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: G-5500 az rotor failure
This morning I found my G-5500 will not move left or right. Not even a
wiggle. Took some measurements and the wiring appears to be intact but I
don't understand the 40 Vac readings when the rotor is connected to the
control box. Here are my readings taken at the control box end of the
wiring:
Rotor connected to control box:
Common (pin 6) to Left (pin 4)? Press Left: 28 Vac? Right: 40 Vac
Common (pin 6) to Right (pin 5) Press Left: 40 Vac? Right: 28 Vac
Rotor disconnected. Measuring control box terminals:
Pin 6 to 4? Press Left: 29.5 Vac? Press right: 0
Pin 6 to 5 Press Left: 0? Press Right: 29.5 Vac
Measuring rotor cable at control box, disconnected from box:
6 (brown) to 4 (blue) 5.3 Ohms
6 (brown) to 5 (orange) 5.3 Ohms
4 (blue) to 5 (orange) 8.9 Ohms
Any suggestions before I pull the rotor off the mast?
73,
Ken, W7KKE
_______________________________________________
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: Fri, 23 Aug 2019 19:54:26 -0400
From: Scott <scott23192@?????.???>
To: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] PSAT2 Anomaly?
Message-ID:
<CAJCSnOZt5y99ZLAP=c01dC+CcM_q2-fVPQeaHdh_7BXnUxnFoA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Nothing heard on 2m, Bob, but good copy on PSAT-2's 70cm SSTV downlink 2349
UTC.
https://www.dropbox.com/s/shbail5ai2t8ghs/psat2-sstv.png?raw=1
-Scott, K4KDR
======================
On Fri, Aug 23, 2019 at 5:53 PM Robert Bruninga via AMSAT-BB <
amsat-bb@?????.???> wrote:
> The usual PSAT2 downlink stopped after 0809z today in a pass over SE USA.
> Ground Stations are fine because its sister, USNAP1, is still downlinking
> via the usual ground stations.
> Both downlinks visible on http://aprs.org/sats.html
>
> A cessation of our Amateur packet telemetry design has never happened in 18
> years in space over 6 successful spacecraft other than the occasional low
> power crash which is fixed after the next eclipse on the next pass or so.
> But never a complete cessation.
>
> Since the UHF side is independent, we welcome folks to listen to the UHF
> downlink 435.350 +/- Doppler and verify if that is working. Remember, it
> must be in daylight for the SSTV downlink to be on.
>
> Fortunately we do have one report of an SSTV image at 1340z from Gustave
> LW2DTZ. If we have another confirmation that UHF has been heard, then we
> can rule out a possible collision with space debris. (we get notificaitons
> of near conjunctions passing within 500m about every day or so, but after
> 18
> years we have come to ignore them. Maybe this one hit?
>
> And it was working so well!
> Bob, WB4APR
>
------------------------------
Message: 8
Date: Fri, 23 Aug 2019 20:14:37 -0400
From: John Kludt <johnnykludt@?????.???>
To: Robert Bruninga <bruninga@????.???>
Cc: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Echostar 9 test cards
Message-ID:
<CABsMmtRG4CGkssYnVg_K8r7NiEw4djNXYBqifYwqnoAVhe3EUw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Folks,
I do wish everyone would take the weekend off, take big breath and remember
this is a hobby. I think all of the back and forth and jabs at each other
have probably gone on long enough.
73
John
On Fri, Aug 23, 2019 at 5:58 PM Robert Bruninga via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Hummh,
> I guess then using GPS for other AMSAT applications are not welcome either
> since GPS is also not in the ham bands?
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Tucker McGuire
> via AMSAT-BB
> Subject: Re: [amsat-bb] Echostar 9 test cards
>
> Except, this is a bulletin for amateur radio satellites, which echostar is
> not. Maybe go find a commercial sat fan page if you want to talk about
> commercial GEO's.
>
> ---Tucker
> W4FS
>
> On Fri, Aug 23, 2019, 12:07 PM Ev Tupis via AMSAT-BB <amsat-bb@?????.???>
> wrote:
>
> > I am too, Bob! I'm amazed how many people feel compelled to tell
> > "accomplishers" that they "do it wrong". I say, "If you don't like
> > it, press [Delete] and move on".
> >
> > Ev
> >
> > On Friday, August 23, 2019, 09:46:10 AM EDT, Robert Bruninga via
> > AMSAT-BB <amsat-bb@?????.???> wrote:
> >
> > I actually am excited about the prospect of using LNA's from all
> > these throw-away Dish network dishes for something. It's a great
> > educational opportunity. I am happy to tune in anything that is
> > interesting from a technical perspective and I really love making stuff
> from cast-off stuff.
> >
> > Bob, WB4APR
> >
> > -----Original Message-----
> > From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Dave Webb
> > KB1PVH via AMSAT-BB
> > Subject: Re: [amsat-bb] Echostar 9 test cards
> >
> > EXACTLY how do these posts about Echostar 9 relate to amateur
> > satellites other than it being someone's pipedream?
> >
> > Dave-KB1PVH
> >
> >
> > On Fri, Aug 23, 2019, 8:58 AM KC9SGV via AMSAT-BB <amsat-bb@?????.???>
> > wrote:
> >
> > > Some Echostar 9, 12 GHz TV channels and test cards are shown here.
> > > Scroll down.
> > >
> > > https://www.lyngsat.com/EchoStar-9-Galaxy-23.html
> > >
> > > KC9SGV
> > _______________________________________________
> > 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: 9
Date: Fri, 23 Aug 2019 20:26:27 -0400
From: Scott <scott23192@?????.???>
To: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] PSAT2 Anomaly?
Message-ID:
<CAJCSnOZUAcXHvmG3oEgU9JztEUv0PD10XF7PJfd3xNs1g8_8Fw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Speaking of 70cm PSAT downlinks, as luck would have it both NO-84 & NO-104
were in range at the same time on that pass:
https://twitter.com/scott23192/status/1165057130870837253
-Scott, K4KDR
========================
On Fri, Aug 23, 2019 at 5:53 PM Robert Bruninga via AMSAT-BB <
amsat-bb@?????.???> wrote:
> The usual PSAT2 downlink stopped after 0809z today in a pass over SE USA.
> Ground Stations are fine because its sister, USNAP1, is still downlinking
> via the usual ground stations.
> Both downlinks visible on http://aprs.org/sats.html
>
> A cessation of our Amateur packet telemetry design has never happened in 18
> years in space over 6 successful spacecraft other than the occasional low
> power crash which is fixed after the next eclipse on the next pass or so.
> But never a complete cessation.
>
> Since the UHF side is independent, we welcome folks to listen to the UHF
> downlink 435.350 +/- Doppler and verify if that is working. Remember, it
> must be in daylight for the SSTV downlink to be on.
>
> Fortunately we do have one report of an SSTV image at 1340z from Gustave
> LW2DTZ. If we have another confirmation that UHF has been heard, then we
> can rule out a possible collision with space debris. (we get notificaitons
> of near conjunctions passing within 500m about every day or so, but after
> 18
> years we have come to ignore them. Maybe this one hit?
>
> And it was working so well!
> Bob, WB4APR
>
------------------------------
Message: 10
Date: Fri, 23 Aug 2019 18:02:09 -0700
From: KE6BLR Robert <ke6blr.robert@?????.???>
To: Robert Bruninga <bruninga@????.???>
Cc: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] PSAT2 Anomaly?
Message-ID:
<CABaTVVYQPeJhr2s8jbJGkMd78dD_L_o1hgBi5GtjBJL=UuFjnQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Is there any type of auto reset that occurs on PSAT2 after a week or so?
On Fri, Aug 23, 2019 at 2:53 PM Robert Bruninga via AMSAT-BB <
amsat-bb@?????.???> wrote:
> The usual PSAT2 downlink stopped after 0809z today in a pass over SE USA.
> Ground Stations are fine because its sister, USNAP1, is still downlinking
> via the usual ground stations.
> Both downlinks visible on http://aprs.org/sats.html
>
> A cessation of our Amateur packet telemetry design has never happened in 18
> years in space over 6 successful spacecraft other than the occasional low
> power crash which is fixed after the next eclipse on the next pass or so.
> But never a complete cessation.
>
> Since the UHF side is independent, we welcome folks to listen to the UHF
> downlink 435.350 +/- Doppler and verify if that is working. Remember, it
> must be in daylight for the SSTV downlink to be on.
>
> Fortunately we do have one report of an SSTV image at 1340z from Gustave
> LW2DTZ. If we have another confirmation that UHF has been heard, then we
> can rule out a possible collision with space debris. (we get notificaitons
> of near conjunctions passing within 500m about every day or so, but after
> 18
> years we have come to ignore them. Maybe this one hit?
>
> And it was working so well!
> Bob, WB4APR
> _______________________________________________
> 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: 11
Date: Fri, 23 Aug 2019 21:23:25 -0400
From: Robert Bruninga <bruninga@????.???>
To: KE6BLR Robert <ke6blr.robert@?????.???>
Cc: AMSAT-BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] PSAT2 Anomaly?
Message-ID:
<CALdCfNKbbJSFrvETkqKsd6S2b8TjgbqGz=HR3rp4aZWtQjOLPg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
> Is there any type of auto reset that occurs on PSAT2 after a week or so?
Yes, power is cycled to the TNC if there is more than one minute since the
PTT was keyed. That has always made sure that if it ever stops
transmitting, it will automatically get a powercycle reset. That is why we
have never seen any of my satellites not transmit (if it has power)...
Then there is the automatic 8 day time-out hardware reset.
And finally, there is the backdoor firecode reset. We will try that
tomorrow.
But if the 1 minute power-cycle reset is not bringing it back, then I
cannot imagine how any of the others will...
Bob
> On Fri, Aug 23, 2019 at 2:53 PM Robert Bruninga via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
>> The usual PSAT2 downlink stopped after 0809z today in a pass over SE USA.
>> Ground Stations are fine because its sister, USNAP1, is still downlinking
>> via the usual ground stations.
>> Both downlinks visible on http://aprs.org/sats.html
>>
>> A cessation of our Amateur packet telemetry design has never happened in
>> 18
>> years in space over 6 successful spacecraft other than the occasional low
>> power crash which is fixed after the next eclipse on the next pass or so.
>> But never a complete cessation.
>>
>> Since the UHF side is independent, we welcome folks to listen to the UHF
>> downlink 435.350 +/- Doppler and verify if that is working. Remember, it
>> must be in daylight for the SSTV downlink to be on.
>>
>> Fortunately we do have one report of an SSTV image at 1340z from Gustave
>> LW2DTZ. If we have another confirmation that UHF has been heard, then we
>> can rule out a possible collision with space debris. (we get notificaitons
>> of near conjunctions passing within 500m about every day or so, but after
>> 18
>> years we have come to ignore them. Maybe this one hit?
>>
>> And it was working so well!
>> Bob, WB4APR
>> _______________________________________________
>> 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 14, Issue 330
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