[amsat-bb] Re: Still not getting into the ISS...

Gordon JC Pearce MM3YEQ gordonjcp at gjcp.net
Tue Jan 6 10:46:37 PST 2009

On Tue, 2009-01-06 at 12:57 -0500, G0MRF at aol.com wrote:
> Hi Roger.
> In the recent past the squelch appears to have been set fairly high. As  
> witnessed by the repeated signals being essentially noise free.
> It is now much easier to track the correct uplink on 2m as the doppler  shift 
> is small compared to the 12.5kHz or so (a guess) bandwidth of the ISS  
> receivers IF filter.

So 5kHz steps should be "close enough"?

> Still, 5 Watts downlink is quite amazing and unlike any conventional  
> satellite we have. Where's my 2m amp......

Well I can't use more than 10W anyway, and the only transceiver I have
that does CTCSS has only 5W output.

I wonder if it's worth pointing the 6-element quad at it?  I haven't
really used that yet, since I don't have a tower to put it on, and it's
a bit awkward to use hand-held ;-)


More information about the AMSAT-BB mailing list