[amsat-bb] ISS Repeater Clarification

[Dave Taylor]

Yes, using the radio as a voice repeater does interfere with the intended use.  The Russian team set this up at the last minute because they were concerned about getting telemetry from their satellites, which might be spinning more than they had expected.  They are hoping the nearby receiver on ISS can capture and retransmit telemetry that is not being picked up on the ground.

I do not know if this applies primarily over Europe and Asia, or if repeater use is a problem everywhere.  I would guess that the satellite teams would appreciate receiving telemetry from anywhere it is heard.  There might be something on the satellite websites about that.  I am not directly involved.

Dave, W8AAS


> On Aug 21, 2017, at 6:54 PM, Greg D <ko6th.greg at gmail.com> wrote:
> 
> So, if we use the repeater, are we competing (interfering) with the
> student experiments?  Or, is that only geographically related (i.e. over
> Russia)?
> 
> Greg  KO6TH
> 
> 
> John Brier wrote:
>> There is no tone. The thing to remember is this is not being turned on
>> for random contacts. It is setup to retransmit one of the student sats
>> that was recently deployed by hand from the ISS during a Russian EVA.
>> That sat transmits on 437.050 and that is why the uplink is 437.050
>> and not the "normal" 437.800 that is published as the repeater
>> frequency on ariss.org for example.
>> 
>> 73, John Brier KG4AKV
>> 
>> On Mon, Aug 21, 2017 at 6:01 PM, Mike Diehl <diehl.mike.a at gmail.com> wrote:
>>> 437.050 uplink
>>> 
>>> 73,
>>> 
>>> Mike Diehl
>>> AI6GS
>>> 
>>>> On Aug 21, 2017, at 2:50 PM, Richard Lawn <rjlawn at gmail.com> wrote:
>>>> 
>>>> Just to clarify, the downlink is 145.800 and uplink is 437.800? Is there a
>>>> tone. Someone posted the wrong uplink frequency I think and I just
>>>> monitored a wonderful pass with lots of great signals heard in FN21. I was
>>>> unable to hear myself and suspect I had the wrong uplink frequency.
>>>> Thanks for clarification
>>>> 73
>>>> Rick, W2JAZ
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>> _______________________________________________
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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