[amsat-bb] Re: Fm satellite Frequencies and Doppler

Justin Pinnix justin at fuzzythinking.com
Mon May 16 12:18:05 PDT 2011

Hi Kev,

The active FM birds are AO-51, SO-50, AO-27, and ISS.  I think SO-67 and
HO-68 are sometimes available.  I'm sure someone will correct me if I have
omitted any.

You can get their frequencies by clicking on each one on this page:

The doppler shift will vary throughout the pass, so there is no one position
that works.  ISS has a VHF downlink that varies +/- 3Khz (approx) during the
pass.  The others have UHF downlinks that vary +/- 15Khz (approx).  It will
always be higher at the beginning, on frequency when the sat is at max
elevation, and lower at the end.  Being FM, the tonal quality won't change,
the signal will just get weaker as it leaves the passband, so periodically
tune around for maximum signal strength.

73 de AJ4MJ
On Mon, May 16, 2011 at 12:01 PM, mm0kjg <mm0kjg at googlemail.com> wrote:

> Hello there.
> Would someone be kind enough to give me a list of frequencies with doppler
> correction for the Fm birds. I have Ao51 but not heard for a while . Its
> for
> easy programming into my Ht.
> Cheers Kev De MM0KJG
> 73's
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list