Sometimes the offset in the transponder changes slightly. This is especially true with VO-52 and AO-7. On these sats, I use the RIT to touch up and make sure I can hear my self plainly at the beginning of a pass. This is a little easier than the offset feature in the software.
I hope that makes sense.
73, Drew KO4MA
I'm very new to satellite operation but have been having a blast for the past couple of weeks. Using an IC-910H with attic antennas that include a 7 element 432 Arrow antenna with an SSB Electronics pre-amp mounted at the antenna. 1/2" hardline makes the 70' run from the attic to the shack in the garage. 2 Meters shows a 6 element K1FO Yagi with an SSB Electronics pre-amp and 1/2" hardline.
Rig is controlled by SATPC32 via the CI-V interface at 9600 baud.
On SO-50, I have no problems with doppler correction as you would suspect. With the other birds, doppler is sometimes an issue. Sometimes I hear stations strongly but when I call them, I don't hear my own uplink and the other station obviously doesn't hear me either.
On other passes, the difference is not so great, and I'll hear my own uplink, though usually slightly off frequency.
I know its possible to adjust the uplink frequency in the software, and I've tried it during passes without much success. The translated help file from German isn't much assistance to me so far.
Can someone on the list point me towards a better explanation on the web, or offer suggestions on how to correct the situation? Any help is greatly appreciated!
Les Rayburn, N1LF 121 Mayfair Park Maylene, AL 35114 EM63nf
6M VUCC #1712 AMSAT #38965 Grid Bandits #222 Southeastern VHF Society Central States VHF Society Life Member Six Club #2484
Active on 6 Meters thru 1296, 10GHz & Light
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