[amsat-bb] Re: Is it 100% impossible to work a satellite below thehorizon?

Gary "Joe" Mayfield gary_mayfield at hotmail.com
Sun Mar 13 07:29:56 PDT 2011

I have heard satellite paths extended by Aurora many times.  It has very
distinctive sound.

Joe kk0sd

-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of na2x at yahoo.com
Sent: Sunday, March 13, 2011 9:13 AM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Re: Is it 100% impossible to work a satellite below

On 3/12/2011 7:25 PM, Bill Dzurilla wrote:
> I was giving a presentation at our club meeting called Working 
> DX on the Satellites and afterwards someone had a good 
> question: is it at all possible that tropo, skip, or other 
> form of enhanced propagation can enable a contact via a 
> satellite below the horizon?
> It has never happened to me.  Has it ever happened?

My memory might be a little fuzzy here. There was an article in the AMSAT
Journal back in the early 90's where G3IOR described his contact from the UK
into VK/ZL using RS-12.  As others have mentioned in this thread, RS-12
using 15 and 10 meters for uplink and downlink, below the horizon contacts
were possible. I was able to work KH6 that way from New York. I also worked
many European countries out of normal expected range.

I seriously doubt that satellites using 2 meters and higher frequencies for
uplink/downlink would show much (if any) below the horizon capability.

Bob NA2X  
AMSAT LM #51 since 1974

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