[amsat-bb] iss packet invalid callsign nnnnnn

Mr Jeffrey L Ross radiooperator at comcast.net
Tue Mar 17 10:47:22 PDT 2009

hi folks, just looking at the iss mheard callsign list I see one called 
nnnnnnn. Does anyone know what or who this is? maybe just a silly error, or 
maybe someone is using the iss without a call. we hams police our own if I'm 
not mistaken. anyway why its here to observe and go over hows about some 
explaining to us why there are serveral calls for the iss. I see in the 
list, ISS, ISS-10,ISS-5, RSOISS-4, -4 I Think is the heard digi, but always 
wondering what the other iss calls are. If anyone knows please post, thank 
you much, kc8gkf-5 UISS User.

attached is the isscallsign heard list 
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