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CX2SA > SATDIG 08.09.14 20:45l 920 Lines 31459 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Help with AO-73 (Fraser Bonnett)
2. Re: Help with AO-73 (Andrew Glasbrenner)
3. SDR Play [ NEW SDR RECEIVER. 2 GHz, 8MHz bandwidth under $300
USD ] (Les Rayburn)
4. SO-50 & frequency stability as of late (Clayton Coleman)
5. Re: SDR Play [ NEW SDR RECEIVER. 2 GHz, 8MHz bandwidth under
$300 USD ] (Stefan Wagener)
6. Re: SO-50 & frequency stability as of late (Bob- W7LRD)
7. Re: Help with AO-73 (Bob- W7LRD)
8. Re: SO-50 & frequency stability as of late (Alan)
9. SPECIAL EVENT -- ROSELAND RADIO -- SATURDAY, SEPTEMBER 13th
(Robert Kovacs)
10. Re: Help with AO-73 (D. Craig Fox)
11. Re: SO-50 & frequency stability as of late (Dave Swanson)
12. Re: Help with AO-73 (Clayton Coleman)
----------------------------------------------------------------------
Message: 1
Date: Mon, 08 Sep 2014 09:28:14 -0400
From: "Fraser Bonnett" <FraserBonnett@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Help with AO-73
Message-ID: <000701cfcb68$bedf5b60$3c9e1220$@xxxxxxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Guys, I need a hand working AO-73, I thinks there's something I just don't
understand (I only started working the birds this year so I'm a newbie).
I'm using an IC-9100 and did manage once this weekend to hear my signal,
however, I used SATPC32 to tune my downlink until I found it. By the time I
got that done the bird was too low for a QSO. Also, I am aware that the
prevailing opinion is NOT to use PC control.
So . questions: If I use the rig in SAT mode after I found my signal, I can
tool around the band looking for a QSO. However, I'm aware that AO-73's
frequency shifts quite a bit, but since I'm in SAT mode on the rig it
changes the downlink frequency automatically. So if AO-73 has shifted its
frequency and doesn't match what the SAT mode's offset is, I'm out of sync
again.
If I don't use SAT mode, I'd be constantly switching between VFO's, pressing
buttons and re-tuning constantly?
So I guess, I need to find someone who is successfully working AO-73 with an
IC-9100?
Any suggestions would be appreciated.
73, W3UTD
Fraser
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------------------------------
Message: 2
Date: Mon, 8 Sep 2014 10:20:51 -0400 (GMT-04:00)
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
To: Fraser Bonnett <FraserBonnett@xxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Help with AO-73
Message-ID:
<10073341.1410186052076.JavaMail.root@xxxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
>
>
>If I don't use SAT mode, I'd be constantly switching between VFO's, pressing
>buttons and re-tuning constantly?
>
>
>
>So I guess, I need to find someone who is successfully working AO-73 with an
>IC-9100?
>suggestions would be appreciated.
>
Forget SatPC32 for this one. When you switch to AO-73, let it initially set
the frequency, then click the C button and shut SatPC32 tracking off.
Find a clear freq or a station you want to call. One of the buttons ( I
think main or sub, it's a bit different on my 910 or 821) will let you tune
the uplink while leaving the downlink static. Do that, tune while
transmitting until you hear yourself. Have QSO or call CQ, and every
transmission tune the uplink the first 0.5 second to keep on your receive.
If the station you are working moves on the downlink, lock the vfos back
together, tune him in, then go back to just tuning the uplink.
It sounds worse than it is, but this is the procedure for when you don't
have computer control (or it doesn't work, like with AO-73). Give it a try,
it's not hard.
73, Drew KO4MA
PS This works for all the mode B birds. On Mode J, tune the downlink (the
higher frequency).
------------------------------
Message: 3
Date: Mon, 08 Sep 2014 10:12:22 -0500
From: Les Rayburn <les@xxxxxxxxxxxx.xxx>
To: "vhf@xxxx.xxxxxxxx.xxxx <vhf@xxxx.xxxxxxxx.xxx>, VHF Contesting
Reflector <vhfcontesting@xxxxxxxxxx.xxx>, AMSAT Mailing List
<amsat-bb@xxxxx.xxx>, Star-Com BB <starcom-bb@xxxxxxxx.xxx>
Subject: [amsat-bb] SDR Play [ NEW SDR RECEIVER. 2 GHz, 8MHz bandwidth
under $300 USD ]
Message-ID: <540DC756.1000907@xxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
A few months ago, I sold my Perseus SDR and traded up to the Elad
FDM-S2, which covers up to 160 MHz, and has a bandwidth of about 6 MHz.
Haven't even had time to take it out of the box yet, but in the
meantime, a new SDR receiver has hit the market.
This SDR boasts 8 MHz of bandwidth, and covers from 100 GHz to 2 GHz.
This would allow the user to monitor things like the NOAA Weather Radio
band, amateur radio bands including 6 Meters, 2 Meters, 222, 432, 902,
and 1296, etc. So far, I haven't seen any reviews from hams or dedicated
DX'ers. But it's also half the cost of the Elad at only $300 USD.
More information is available at:
http://www.sdrplay.com/
Can't wait to read a review on this one, and find the time to get my
Elad installed. Curious if any VHF operators have tried this one yet?
--
--
73,
Les Rayburn, N1LF
121 Mayfair Park
Maylene, AL 35114
EM63nf
6M VUCC #1712
AMSAT #38965
Grid Bandits #222
Southeastern VHF Society
Central States VHF Society Life Member
Six Club #2484
Active on 6 Meters thru 1296, 10GHz & Light
--
--
73,
Les Rayburn, N1LF
121 Mayfair Park
Maylene, AL 35114
EM63nf
6M VUCC #1712
AMSAT #38965
Grid Bandits #222
Southeastern VHF Society
Central States VHF Society Life Member
Six Club #2484
Active on 6 Meters thru 1296, 10GHz & Light
------------------------------
Message: 4
Date: Mon, 8 Sep 2014 10:54:25 -0500
From: Clayton Coleman <kayakfishtx@xxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SO-50 & frequency stability as of late
Message-ID:
<CAPovOwfaCMBnZG_a_XhtX1EqAO6y7XyV1hjPBSVdwbF8rusz1g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I have been noticing some irregular shifts in SO-50's downlink
frequency the past several days. I noticed it in the past but it's
been a while since this occurred. Several others are reporting it as
well.
At my AOS today (15:12 UTC, orbit # 62976), SatPC32 had predicted the
downlink to be near 436.801 MHz, when in fact I was receiving the bird
at 436.793. It proceeded to jump up to 436.795 at my TCA before
making it's way down to 436.780 near my LOS.
This seems to be posing some issues for people using full computer
control and also those who stick to pre-programmed memory channels to
make frequency adjustments during a pass.
Considering this recent frequency instability, I would recommend you
manually tune for the strongest downlink frequency. This would help
eliminate some issues with stepping on stations engaged in existing
QSO's. An alternative would be to try using RIT if you insist on
computer control.
The old rule applies -- if you can't hear, don't transmit.
73
Clayton
W5PFG
------------------------------
Message: 5
Date: Mon, 8 Sep 2014 11:01:16 -0500
From: Stefan Wagener <wageners@xxxxx.xxx>
To: Les Rayburn <les@xxxxxxxxxxxx.xxx>
Cc: Star-Com BB <starcom-bb@xxxxxxxx.xxx>, AMSAT Mailing List
<amsat-bb@xxxxx.xxx>, VHF Contesting Reflector
<vhfcontesting@xxxxxxxxxx.xxx>, "vhf@xxxx.xxxxxxxx.xxxx
<vhf@xxxx.xxxxxxxx.xxx>
Subject: Re: [amsat-bb] SDR Play [ NEW SDR RECEIVER. 2 GHz, 8MHz
bandwidth under $300 USD ]
Message-ID:
<CAKu8kHA7z0AO7-t6zYt1gC0pfJuTqyCmMj+pxaiW-Zz88dsN6Q@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Thanks Ray,
The other option is the new HackRF which is actually a SDR transceiver. I
am currently using it with SDR Console V2.2 and Simon is currently working
making the TX function supported within the software. Right now I am using
GNU Radio to experiment with TX. Cost is $299 but be prepared to spend some
money on additional filtering and amplification.
See
https://greatscottgadgets.com/hackrf/
http://sdr-radio.com
Stefan
On Mon, Sep 8, 2014 at 10:12 AM, Les Rayburn <les@xxxxxxxxxxxx.xxx> wrote:
> A few months ago, I sold my Perseus SDR and traded up to the Elad FDM-S2,
> which covers up to 160 MHz, and has a bandwidth of about 6 MHz. Haven't
> even had time to take it out of the box yet, but in the meantime, a new SDR
> receiver has hit the market.
>
> This SDR boasts 8 MHz of bandwidth, and covers from 100 GHz to 2 GHz. This
> would allow the user to monitor things like the NOAA Weather Radio band,
> amateur radio bands including 6 Meters, 2 Meters, 222, 432, 902, and 1296,
> etc. So far, I haven't seen any reviews from hams or dedicated DX'ers. But
> it's also half the cost of the Elad at only $300 USD.
>
> More information is available at:
>
> http://www.sdrplay.com/
>
> Can't wait to read a review on this one, and find the time to get my Elad
> installed. Curious if any VHF operators have tried this one yet?
>
> --
> --
> 73,
>
> Les Rayburn, N1LF
> 121 Mayfair Park
> Maylene, AL 35114
> EM63nf
>
> 6M VUCC #1712
> AMSAT #38965
> Grid Bandits #222
> Southeastern VHF Society
> Central States VHF Society Life Member
> Six Club #2484
>
> Active on 6 Meters thru 1296, 10GHz & Light
>
> --
> --
> 73,
>
> Les Rayburn, N1LF
> 121 Mayfair Park
> Maylene, AL 35114
> EM63nf
>
> 6M VUCC #1712
> AMSAT #38965
> Grid Bandits #222
> Southeastern VHF Society
> Central States VHF Society Life Member
> Six Club #2484
>
> Active on 6 Meters thru 1296, 10GHz & Light
>
>
> _______________________________________________
> 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://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 6
Date: Mon, 8 Sep 2014 16:05:53 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: Clayton Coleman <kayakfishtx@xxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SO-50 & frequency stability as of late
Message-ID:
<1502558662.14378739.1410192353812.JavaMail.root@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
I noticed that and RIT "fixes" it.
73 Bob W7LRD
----- Original Message -----
From: "Clayton Coleman" <kayakfishtx@xxxxx.xxx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Sent: Monday, September 8, 2014 8:54:25 AM
Subject: [amsat-bb] SO-50 & frequency stability as of late
I have been noticing some irregular shifts in SO-50's downlink
frequency the past several days. ?I noticed it in the past but it's
been a while since this occurred. ?Several others are reporting it as
well.
At my AOS today (15:12 UTC, orbit # 62976), SatPC32 had predicted the
downlink to be near 436.801 MHz, when in fact I was receiving the bird
at 436.793. ?It proceeded to jump up to 436.795 at my TCA before
making it's way down to 436.780 near my LOS.
This seems to be posing some issues for people using full computer
control and also those who stick to pre-programmed memory channels to
make frequency adjustments during a pass.
Considering this recent frequency instability, I would recommend you
manually tune for the strongest downlink frequency. ?This would help
eliminate some issues with stepping on stations engaged in existing
QSO's. ?An alternative would be to try using RIT if you insist on
computer control.
The old rule applies -- if you can't hear, don't transmit.
73
Clayton
W5PFG
_______________________________________________
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://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Mon, 8 Sep 2014 16:13:08 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxxx Fraser Bonnett <FraserBonnett@xxxxxxx.xxx>
Subject: Re: [amsat-bb] Help with AO-73
Message-ID:
<748094739.14385569.1410192788535.JavaMail.root@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
I disable the computer control for frequency control and do it the old
fashion way.? I does take a bit of "work" almost constantly tweeking knobs,
but it does work, and after a few efforts it is really quite easy and simple.?
73 Bob W7LRD
----- Original Message -----
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
To: "Fraser Bonnett" <FraserBonnett@xxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Sent: Monday, September 8, 2014 7:20:51 AM
Subject: Re: [amsat-bb] Help with AO-73
>
>
>If I don't use SAT mode, I'd be constantly switching between VFO's, pressing
>buttons and re-tuning constantly?
>
>
>
>So I guess, I need to find someone who is successfully working AO-73 with an
>IC-9100?
>suggestions would be appreciated.
>
Forget SatPC32 for this one. When you switch to AO-73, let it initially set
the frequency, then click the C button and shut SatPC32 tracking off.
Find a clear freq or a station you want to call. One of the buttons ( I
think main or sub, it's a bit different on my 910 or 821) will let you tune
the uplink while leaving the downlink static. Do that, tune while
transmitting until you hear yourself. Have QSO or call CQ, and every
transmission tune the uplink the first 0.5 second to keep on your receive.
If the station you are working moves on the downlink, lock the vfos back
together, tune him in, then go back to just tuning the uplink.
It sounds worse than it is, but this is the procedure for when you don't
have computer control (or it doesn't work, like with AO-73). Give it a try,
it's not hard.
73, Drew KO4MA
PS This works for all the mode B birds. On Mode J, tune the downlink (the
higher frequency).
_______________________________________________
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://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Mon, 8 Sep 2014 11:30:47 -0500
From: Alan <wa4sca@xxxxx.xxx>
To: "'Clayton Coleman'" <kayakfishtx@xxxxx.xxx>, "'AMSAT-BB'"
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SO-50 & frequency stability as of late
Message-ID: <000b01cfcb82$3f887c10$be997430$@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Clayton,
I have been watching it shift 5-10 KHz or so on some passes, though 3-5 KHz
is more common. Watching
it with a DSP rig allows you to compensate.
The more interesting question is what, if anything, the uplink is doing? I
got up for a 0200 L pass
to experiment, and there was nobody else on. I thought I had it figured
out, and suddenly the
downlink shifted. Then, my uplink data seemed wrong, as if it also shifted.
;( Will try again the
next time I have some insomnia.
73s,
Alan
WA4SCA
<-----Original Message-----
<From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Clayton Coleman
<Sent: Monday, September 08, 2014 10:54 AM
<To: AMSAT-BB
<Subject: [amsat-bb] SO-50 & frequency stability as of late
<
<I have been noticing some irregular shifts in SO-50's downlink
<frequency the past several days. I noticed it in the past but it's
<been a while since this occurred. Several others are reporting it as
<well.
<
<At my AOS today (15:12 UTC, orbit # 62976), SatPC32 had predicted the
<downlink to be near 436.801 MHz, when in fact I was receiving the bird
<at 436.793. It proceeded to jump up to 436.795 at my TCA before
<making it's way down to 436.780 near my LOS.
<
<This seems to be posing some issues for people using full computer
<control and also those who stick to pre-programmed memory channels to
<make frequency adjustments during a pass.
<
<Considering this recent frequency instability, I would recommend you
<manually tune for the strongest downlink frequency. This would help
<eliminate some issues with stepping on stations engaged in existing
<QSO's. An alternative would be to try using RIT if you insist on
<computer control.
<
<The old rule applies -- if you can't hear, don't transmit.
<
<73
<Clayton
<W5PFG
<_______________________________________________
<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://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Mon, 8 Sep 2014 17:17:26 +0000
From: Robert Kovacs <robert.kovacs.g4g4@xxxxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SPECIAL EVENT -- ROSELAND RADIO -- SATURDAY,
SEPTEMBER 13th
Message-ID:
<3ED628DE96DBD14A9D4AE285CD6D4D6E0A6BB42C@xxxxxxxx.xxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
This coming Saturday, September 13, 2014, in celebration of its 69th
anniversary, the Roseland (NJ) Radio Club (K2GQ) will be operating as
special event station K2R from Eagle Rock Reservation, West Orange, New
Jersey (grid FN20), from 10:00 a.m. to 2:00 p.m. EDT.
Although the Club's primary activities will be Two Meter simplex and
possibly some QRP HF (20 m), we do hope to work the SO-50 pass at 12 Noon
EDT (1405 UTC)..
Hope to hear from you all then!
73,
Roseland Radio Club -- K2GQ
Bob Kovacs KC2WYH
AMSAT Member 38504
.
------------------------------
Message: 10
Date: Mon, 8 Sep 2014 11:12:53 -0700
From: "D. Craig Fox" <DFox@xxxxxx.xxx>
To: 'Bob- W7LRD' <w7lrd@xxxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Help with AO-73
Message-ID:
<FE3B26F42CA36A4B976024BC0C5C57D60359FA81FA@xxxxxxxxxx.xxx.xxx>
Content-Type: text/plain; charset="utf-8"
?For what its worth, I do not disable CAT control on satpc but I do increase
the speed from x1 to x5 (or is it x10?). A0-73 does require constant
adjustment but for me anyway it would be a lot tougher without satpc keeping
me close. On almost every pass I hear many operators taking so much time
just trying to find their downlink (and inadvertently QRM'g QSO's in
progress).
Craig
N6RSX
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Bob- W7LRD
Sent: Monday, September 08, 2014 9:13 AM
To: Andrew Glasbrenner
Cc: amsat-bb@xxxxx.xxxx Fraser Bonnett
Subject: Re: [amsat-bb] Help with AO-73
I disable the computer control for frequency control and do it the old
fashion way.? I does take a bit of "work" almost constantly tweeking knobs,
but it does work, and after a few efforts it is really quite easy and simple.
73 Bob W7LRD
----- Original Message -----
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
To: "Fraser Bonnett" <FraserBonnett@xxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Sent: Monday, September 8, 2014 7:20:51 AM
Subject: Re: [amsat-bb] Help with AO-73
>
>
>If I don't use SAT mode, I'd be constantly switching between VFO's,
>pressing buttons and re-tuning constantly?
>
>
>
>So I guess, I need to find someone who is successfully working AO-73
>with an IC-9100?
>suggestions would be appreciated.
>
Forget SatPC32 for this one. When you switch to AO-73, let it initially set
the frequency, then click the C button and shut SatPC32 tracking off.
Find a clear freq or a station you want to call. One of the buttons ( I
think main or sub, it's a bit different on my 910 or 821) will let you tune
the uplink while leaving the downlink static. Do that, tune while
transmitting until you hear yourself. Have QSO or call CQ, and every
transmission tune the uplink the first 0.5 second to keep on your receive.
If the station you are working moves on the downlink, lock the vfos back
together, tune him in, then go back to just tuning the uplink.
It sounds worse than it is, but this is the procedure for when you don't
have computer control (or it doesn't work, like with AO-73). Give it a try,
it's not hard.
73, Drew KO4MA
PS This works for all the mode B birds. On Mode J, tune the downlink (the
higher frequency).
_______________________________________________
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://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://amsat.org/mailman/listinfo/amsat-bb
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Message: 11
Date: Mon, 08 Sep 2014 13:18:21 -0500
From: Dave Swanson <dave@xxxxxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] SO-50 & frequency stability as of late
Message-ID: <540DF2ED.8030303@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Twice during the 1655Z pass just now I actually had to shift UP in
frequency to hold the downlink. Right at AOS I picked up the signal at
.795, made a contact, and about 30 seconds later I heard a very
noticeable 'shift' in the noise where it was basically unreadable. I
shifted down, it got worse, so I went up and picked it back up at .800
clear as a bell. About 6 minutes later, near my apex, I had followed the
doppler down normally to about .780, and it jumped back up again by
about another 5 or so. Each time it did this, it was in the middle of
someone else's transmission and there was an abrupt 'shift' that didn't
sound anything like the gradual worsening that I normally hear with
doppler.
Just my observations from a sat-noob. Also first post on amsat-bb... o/
73, Dave, KG5CCI
On 9/8/2014 11:30 AM, Alan wrote:
> Clayton,
>
> I have been watching it shift 5-10 KHz or so on some passes, though
> 3-5 KHz is more common. Watching
> it with a DSP rig allows you to compensate.
>
> The more interesting question is what, if anything, the uplink is
> doing? I got up for a 0200 L pass
> to experiment, and there was nobody else on. I thought I had it
> figured out, and suddenly the
> downlink shifted. Then, my uplink data seemed wrong, as if it also
> shifted. ;( Will try again the
> next time I have some insomnia.
>
> 73s,
>
> Alan
>
> WA4SCA
>
>
> <-----Original Message-----
> <From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx
> On Behalf Of Clayton Coleman
> <Sent: Monday, September 08, 2014 10:54 AM
> <To: AMSAT-BB
> <Subject: [amsat-bb] SO-50 & frequency stability as of late
> <
> <I have been noticing some irregular shifts in SO-50's downlink
> <frequency the past several days. I noticed it in the past but it's
> <been a while since this occurred. Several others are reporting it as
> <well.
> <
> <At my AOS today (15:12 UTC, orbit # 62976), SatPC32 had predicted the
> <downlink to be near 436.801 MHz, when in fact I was receiving the bird
> <at 436.793. It proceeded to jump up to 436.795 at my TCA before
> <making it's way down to 436.780 near my LOS.
> <
> <This seems to be posing some issues for people using full computer
> <control and also those who stick to pre-programmed memory channels to
> <make frequency adjustments during a pass.
> <
> <Considering this recent frequency instability, I would recommend you
> <manually tune for the strongest downlink frequency. This would help
> <eliminate some issues with stepping on stations engaged in existing
> <QSO's. An alternative would be to try using RIT if you insist on
> <computer control.
> <
> <The old rule applies -- if you can't hear, don't transmit.
> <
> <73
> <Clayton
> <W5PFG
> <_______________________________________________
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> of AMSAT-NA.
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------------------------------
Message: 12
Date: Mon, 8 Sep 2014 13:35:22 -0500
From: Clayton Coleman <kayakfishtx@xxxxx.xxx>
To: "D. Craig Fox" <DFox@xxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Help with AO-73
Message-ID:
<CAPovOwdroeLQ5qThVxBp8rjFhihqSL3r4hD6dRcdmMAsud1_LQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
If running SatPC32 and you keep your trigger finger on the +/- buttons
on your keyboard, you can manually tweak the correction with decent
performance, thus allowing you to leave computer control enabled.
73
Clayton
W5PFG
On Mon, Sep 8, 2014 at 1:12 PM, D. Craig Fox <DFox@xxxxxx.xxx> wrote:
> For what its worth, I do not disable CAT control on satpc but I do
increase the speed from x1 to x5 (or is it x10?). A0-73 does require
constant adjustment but for me anyway it would be a lot tougher without
satpc keeping me close. On almost every pass I hear many operators taking
so much time just trying to find their downlink (and inadvertently QRM'g
QSO's in progress).
>
> Craig
> N6RSX
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Bob- W7LRD
> Sent: Monday, September 08, 2014 9:13 AM
> To: Andrew Glasbrenner
> Cc: amsat-bb@xxxxx.xxxx Fraser Bonnett
> Subject: Re: [amsat-bb] Help with AO-73
>
> I disable the computer control for frequency control and do it the old
fashion way. I does take a bit of "work" almost constantly tweeking knobs,
but it does work, and after a few efforts it is really quite easy and simple.
> 73 Bob W7LRD
>
> ----- Original Message -----
>
> From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
> To: "Fraser Bonnett" <FraserBonnett@xxxxxxx.xxx>, amsat-bb@xxxxx.xxx
> Sent: Monday, September 8, 2014 7:20:51 AM
> Subject: Re: [amsat-bb] Help with AO-73
>
>
>>
>>
>>If I don't use SAT mode, I'd be constantly switching between VFO's,
>>pressing buttons and re-tuning constantly?
>>
>>
>>
>>So I guess, I need to find someone who is successfully working AO-73
>>with an IC-9100?
>>suggestions would be appreciated.
>>
>
> Forget SatPC32 for this one. When you switch to AO-73, let it initially
set the frequency, then click the C button and shut SatPC32 tracking off.
>
> Find a clear freq or a station you want to call. One of the buttons ( I
think main or sub, it's a bit different on my 910 or 821) will let you tune
the uplink while leaving the downlink static. Do that, tune while
transmitting until you hear yourself. Have QSO or call CQ, and every
transmission tune the uplink the first 0.5 second to keep on your receive.
If the station you are working moves on the downlink, lock the vfos back
together, tune him in, then go back to just tuning the uplink.
>
> It sounds worse than it is, but this is the procedure for when you don't
have computer control (or it doesn't work, like with AO-73). Give it a try,
it's not hard.
>
> 73, Drew KO4MA
>
> PS This works for all the mode B birds. On Mode J, tune the downlink (the
higher frequency).
> _______________________________________________
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End of AMSAT-BB Digest, Vol 9, Issue 315
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