[amsat-bb] Re: ISS X Band - 17:05z EL96

David - KG4ZLB/MØZLB m0zlb at btinternet.com
Fri Feb 20 10:48:57 PST 2009

As always Tim, the voice of reason  :-D

I tried to work you on AO-51 last night but it was the normal zoo!


n3tl at bellsouth.net wrote:
> David and all,
> I'm confident someone will correct me if any of what follows is in error.
> I believe two elements are at play during passes when the ISS repeater 
> is active.
> 1 - Doppler-tuning on the transmit side is important.
> 2 - I suspect the squelch is set somewhat on the radio up there; 
> otherwise, I doubt anyone would get through at all.
> My sense is that the "jamming" you alluded to has more to do with 
> people who are transmitting with decent power levels who are hitting 
> the repeater but are slightly off the uplink frequency. That, plus 
> some whose signals barely break the squelch.
> And there I was ... out in the front yard with my VX-7R set at 50 mW 
> out. Like THAT signal has a chance!
> I'm gonna keep trying, though, whenever I use the HT for a pass.
> 73 to all,
> Tim - N3TL

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