Bill, As you know, manual Doppler correction is going to be a quite a bit different than on AO-40, but still relatively simple with practice. Always adjust the higher of the two frequencies and leave the lower frequency fixed as far as possible (slight corrections may be needed at times, of course, depending on how the person you are in QSO with is tuning).
Be sure to get on the sats and practice before Field Day. This goes for everyone who rarely gets on the satellites at other times! Perhaps the first or second weekend in June should be a practice session for Field Day to make sure that the kinks are worked out before the live event. 73, Paul, N8HM On Tue, May 6, 2014 at 11:40 AM, Bill (W1PA) <[email protected]> wrote: > I did some testing last night. To be clear, I have a FT-847 that has single > direction CAT. > Rigs with serial numbers later than 8G05xxxx have bi-directional, rigs > younger are likely > to have single (Yaesu did go back and offer uProc replacements for a time, > so if a rig is > older, it may still do bi-directional CAT). > More here: http://www.supercontrol.de/cat/ft847faq/page4.htm#catcontrol > > I installed and tried Gpredict on Ubuntu. The software and the rig won't > link up for more than a few > seconds, so there must be some bi-directional handshaking, and then a > timeout. I ruled out my > cable, etc, by using the Grig executable that comes with Hamlib. With Grig I > can push changes to the rig, > but no response to anything I do on the rig. More here: > http://www.neodux.com/read/HOWTO:_Configure_Hamlib_for_Linux_Hams_-_Part_2 > > So then I tried SatPC32 on a WinXP machine. Actually, "out of the box", it > works somewhat... > changing birds will correctly set up both VFOs and the modes. However, > driving the VFO from the > software, or letting the doppler correction take over, only effects the main > VFO on my rig, > not the sub-VFO. > > Greg suggested that I let the PC control the rotor instead, and manually > adjust doppler on the rig. > Probably a good suggestion, and something I had no problem doing in the > AO-40 days, > but I won't have a computer controlled rotator, a different FT847, or the > skill to swap out a > surface mount quad flatpack (the processor in the FT847 than needs to be > swapped to get > bidirectional) by FD; I'll take what automation I can get. > > I'll continue playing. > > Bill W1PA > > > > _______________________________________________ > Sent via [email protected]. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
