[amsat-bb] Re: Some Elmering requested for uplinking to ARISSAT-1

2011-11-03 Thread Burns Fisher
Thanks Dave and everyone else who responded, both personally and on the board. To comment on a couple of comments: I certainly expect to hook up computer control of the doppler comp etc, but was trying to do it manually at first just to understand better. Re my problems inside: The shingles on t

[amsat-bb] Re: Some Elmering requested for uplinking to ARISSAT-1

2011-11-02 Thread David Palmer KB5WIA
Hi Burns, My 2 cents -- sounds like things are mostly okay (your recieving setup is obviously good if you can hear others in the transponder passband). The big factor that I can see is lack of gain on the uplink. I've successfully gotten into ARISSAT with my 5W QRP radio, but that's using a 13 d

[amsat-bb] Re: Some Elmering requested for uplinking to ARISSAT-1

2011-11-02 Thread DF2MZ
Hi, I would strongly recommend using software controlled Doppler correction. It should be considered state of the art to correct uplink and downlink in order to keep the signal at fixed frequency in the satellites passband. Before PCs became affordable, the manual standard procedure was to ke