[amsat-bb] Uplink Doppler Changes For FM Satellites

[Tim Crawford]

 Rick,
Thank you for that.... appreciate it
tim 

    On Wednesday, May 13, 2020, 4:50:14 PM PDT, saguaroastro <saguaroastro at cox.net> wrote:  
 
 CAS 7A has (or will  have) an FM transponder in addition to the 3 linears ( 15/10;15/70; 2/70)
Launch show 15 sep 2020. Not sure how they plan to schedule that, but it sounds like it'll be a fun bird.
73Rick Tejera (K7TEJ)Saguaro Astronomy ClubWww.saguaroastro.orgThunderbird Astronomy ClubWww.w7tbc.org


-------- Original message --------From: "Peter Goodhall (2M0SQL) via AMSAT-BB" <amsat-bb at amsat.org> Date: 5/13/20 12:11 (GMT-07:00) To: Tim Crawford <tcarchcape at yahoo.com> Cc: Amsat <amsat-bb at amsat.org> Subject: Re: [amsat-bb] Uplink Doppler Changes For FM Satellites 
Confused why you think Huskysat-1, DOSAAF-85 (RS-44), CAS-7A  are FM
sats they are all linear so please don't be putting any FM through
them.

Current FM fleet is AO-91, AO-92, SO-50, Lilacsat-2 and PO-101 nothing else.

You still need to put Doppler correction into the memories on AO-91
and AO-92 not sure why you wouldn't be there are so many charts
available just to transpose into the memory software.

Peter, 2M0SQL

On Wed, 13 May 2020 at 19:52, Tim Crawford via AMSAT-BB
<amsat-bb at amsat.org> wrote:
>
> Uplink Doppler Changes For FM Satellites Question.  I am updating my HH Freq currently.
>
> As I under stand it, the Fox Satellites (AO-91 & 92) receiver have AFC (automatic Frequency Control) which means that no doppler change in the transmit frequency is required nor should it be put into effect.
> My question is does anyone know whether or not any of the following FM Satellites also have AFC for their receivers?
>
> PO-101 (Diwata)CAS-3H (LilacSat-2)Huskysat-1DOSAAF-85 (RS-44)CAS-7A (not launched  yet)
> Thank you for your assistance.
> 73
> Tim CrawfordKE7TAC
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_______________________________________________
Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
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Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb