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Re: AO51 mode: 23cm SSB up / 70cm FM down ?



Hi Drew,

Thanks a lot - I will prepare myself and monitor the text schedule !

Henk, PA3GUO


> We did get your request, sorry if we didn't reply. As Ib has already  indicated there is no squelch on the receiver
> on L band. The power and  antenna you describe should be good enough to access the satellite on FM,  especially at
> time of closest approach. The Doppler tuning is very  important!
>
> I'll see if the -modes group is amenable to running a few days of the L/U  mode at the end of the month with a SSB
> uplink. If so, I'll let the -bb  know, and of course change the text schedule on the webpage. Be sure to  check the
> -text- schedule, as I do not believe the graphic one has a L SSB  option.
>
> 73, Drew KO4MA
>
> ----- Original Message -----
> From: "Henk, PA3GUO" <hamoen@iae.nl>
> To: <amsat-bb@amsat.org>
> Cc: <pa3guo@amsat.org>
> Sent: Tuesday, September 09, 2008 1:36 AM
> Subject: [amsat-bb] AO51 mode: 23cm SSB up / 70cm FM down ?
>
>
>> Dear all,
>>
>> I was considering to submit the following mode to the AO51 command team. (I did this already a while ago but my
>> emails seems to bounce)
>>
>> Objective: provide a means for stations with small ERP to test their 23cm uplink channel into AO51.
>>
>> Uplink   23cm SSB (!)
>> Downlink 70cm FM (preferably 435.300)
>>
>> With 23cm FM uplink I seem not to have enough ERP to get over the sat. That is, I never made it through the
>> squelch level of the AO51 receiver (using Kenwood TS2000X/10W, and a small cubicle quad antenna only).
>>
>> In SSB mode with the squelch open I could try even CW to see how weak my uplink is. Maybe just below squelch
>> level, maybe far down in the noise. And: with SSB we can even have multiple stations testing their links at the
>> same time !
>>
>>
>> Any thoughts of anyone else before I submit this request ?
>>
>>
>> Henk, PA3GUO
>> (... and I have a 33 elements beam now)
>>
>> http://www.pa3guo.com
>>
>>
>>
>>
>> _______________________________________________
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