Bill, You are mistaken. The FT-847 will work fine with SatPC. I had one and it worked great. I used a G5400 AZ/EL Rotor from Yaesu with the Easy Rotor Tracker module from Germany. I also used the 12v voltage on the coax to power my mast mounted Preamps. I know this doesn't answer your question but trying to do an automated work around to the G5400 or G5500 is going to be a real pain..
73, Craig W1MSG
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Bill (W1PA) Sent: Tuesday, May 28, 2013 10:54 AM To: amsat-bb@amsat.org Subject: [amsat-bb] a cheap LEO tracker for single op
Again, thinking to FD...
- My FT-847 predates bi-directional CAT i.e. no computer assisted Doppler - I may be the only one at the station i.e. no helper to man the antenna (Arrow), so I may need to do everything. - assume the transponder LEO birds
Has anyone tried this?:
1) mount a standard TV antenna horizontal 2) align the horizontal rotor axis 90 deg to the orbit tilt (inclination?) of the intended bird (so if the bird went directly overhead, a beam mounted on the mast would track) 3) but, mount the antenna on the horizontal mast such that it can be set tilted off the mast 0 to 90 degs to the mast axis (from horizon to zenith, and in practice set it to the maximum elevation of the intended pass) 4) operation: set the rotator (in 2) and aim the beam to the AOS point of the pass (in 3), pan the orbit remotely from the operator position. 5) the rotator axis and angle of the beam to mast would have to be set for each pass.
Do-able?
Bill W1PA
_______________________________________________ Sent via AMSAT-BB@amsat.org. 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