[amsat-bb] Re: Terrestrial QRM to FM satellites

Bob Bruninga bruninga at usna.edu
Thu Sep 20 20:29:49 PDT 2007

>> Today on passes of both SO-50 and AO-27, 
>> there were terrestrial QSOs going on.  
>> It was especially bad on AO-27...

Three comments:

1) When you are not doing satellite passes, shift your two meter rig to 145.85 and LISTEN all day.  90% of the US population lives in cities (or something like that) and so the chances are that some one will hear them direct.

2) Its in the cities that the repeater density is so high that some new hams might feel there is no other place to put up a local non-coordinated repeater.  So we probably have a good chance of somneone on this BB hearing them.

3) Listen for 9600 baud Packet noise bursts.  At least they are identifiable.  One of the packet uplinks on GO-32 shares the same 2m uplink as AO-27.  This is why we have to  prohibit unattended packet operation via GO-32 on its 145.85 uplink.

I will modify my GO-32 APRS user operations web page to make sure this point is clear.

Bob, Wb4APR

More information about the AMSAT-BB mailing list