[amsat-bb] Unsuccessful Uplinks - AO-92

[Daniel Wight]

Seems like your Doppler shift might be opposite. I normally start high &
work my way down during the satellite pass... (For instance, I would start
at 435.180 for AO-85 and then work my way down to 435.160 as the satellite
'sunsets' on my horizon). Doppler shift should be higher frequency during
approach, near zero when the satellite is overhead, and lower after the
satellite passes.

73,

Daniel, KD7LEE

On Wed, Jun 6, 2018, 17:27 Andrew Glasbrenner <glasbrenner at mindspring.com>
wrote:

> You've discovered one of the reasons full duplex is best on the FM
> sats...you have no idea if you are getting through, because you can't hear
> while transmitting.
>
> Got another radio so you can work full duplex?
>
> 73, Drew KO4MA
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Hugo Dominguez,
> Jr.
> Sent: Wednesday, June 06, 2018 7:41 PM
> To: amsat-bb at amsat.org
> Subject: [amsat-bb] Unsuccessful Uplinks - AO-92
>
> I’ve just started playing with talking on satellites. I’m able to hear all
> the satellites (AO-85, AO-91, AO-92 and SO-50) that I have programmed on my
> Kenwood TH-D74, which I use with my Elk dual band periodic log antenna.
> However no one can hear me or responds to me. I’ve only been successful
> with my uplink (being heard) on AO-91 on several passes. I triple checked
> my frequencies on my radio and the 67 Hz tone and they are set as follows:
> Sat.        Xmit       Tone
> SO-50   145.850  67.0 Hz
> AO-85   435.170  67.0 Hz
> AO-91   435.250  67.0 HZ
> AO-92   435.350  67.0 Hz
> These are the frequencies used when the bird is at its peak. I adjust for
> doppler on 440 by starting out 10 khz less, e.g AO-85 435.160, 435.165,
> 435.170, 435.175, 435.180.
>
> Any ideas if something has changed from what is published or am I missing
> something? Like I said, i’ve been able to communicate on AO-91.
>
> —
> Hugo Dominguez, Jr.
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> _______________________________________________
> Sent via AMSAT-BB at amsat.org. 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://www.amsat.org/mailman/listinfo/amsat-bb
>