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Re: bird to bird fun



How much more difficult was working two linear satellites with regard to 
doppler correction, given that the satellites are moving relative to each 
other as well as the operator??

Auke


----- Original Message ----- 
From: "i8cvs" <domenico.i8cvs@tin.it>
To: <w7lrd@comcast.net>; "AMSAT-BB" <AMSAT-BB@amsat.org>
Sent: Thursday, August 28, 2008 8:03 AM
Subject: [amsat-bb] Re: bird to bird fun


> ----- Original Message -----
> From: <w7lrd@comcast.net>
> To: "AMSAT-BB" <AMSAT-BB@amsat.org>
> Sent: Thursday, August 28, 2008 12:07 AM
> Subject: [amsat-bb] bird to bird fun
>
>> Hello All
>> Here's an interesting endeavor.  The downlink on AO-7 mode B is 145.950
>> which is the uplink for FO-29.  So you could hear yourself (or anyone
>> else on the FO-29 downlink at 435.850, when both are in view.   I think
>> there was something like this back in the days of the RS birds.  Why
>> bother?
>> Well we have to do something to keep our interest going while waiting for
>> the next HEO.  Plus it's fun.
>> 73 Bob W7LRD
>> Seattle
>>
>> --
>> "if this were easy, everyone would be doing it"
>
> Hi Bob, W7LRD
>
> Since OSCAR-7 mode B and FO-29 mode-J have both inverting transponders 
> using
> SSB it happens that to be received as usually in USB over the FO-29 
> downlink
> we must transmit as well USB into the OSCAR-7 uplink.
>
> Since the noise translated by OSCAR-7 mode-B is very high probably a try 
> on
> CW will be convenient.
>
> As Rick WA4NVM pointed out with OSCAR-7 mode-B and OSCAR-8 mode-J
> it was a common practice.
>
> 73" de
>
> i8CVS Domenico
>
>
>
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