[sarex] Re: Computer control of ICOM 1271A?
th.frey at vtxmail.ch
Fri Dec 19 10:53:36 PST 2008
Greg D. schrieb:
> Hi folks,
> I'm pretty sure the answer is no, but I'll ask anyway...
> Has anyone succeeded in interfacing an ICOM 1271A 23cm transceiver to a computer for Doppler control?
Yes, an 1271E TRX ...
> In preparation for the ISS L-band uplink, I maybe have barely enough uplink power to get in, but it will need to be right at mid-point on an overhead pass. That's when Doppler shift is the worst.
> I have been able to keep up with Doppler on AO-51 L/U by hand (while watching the computer prediction screen), so direct computer control isn't critical, but it seems like a good next step in station automation, if it's possible. The only interface I can imagine is to simulate mike up/down clicks through a parallel port. I am currently running a home-brew client for Predict under Linux, which spits out CAT strings to my Yaesu 736R via a serial port. So, mike-clicks will be a good bit of a re-write.
... via "mike-click"-interface at the serial port. In between I have
a serial switchbox to switch between CAT (Kenwood TS-711E) and the
"mike-click"-interface. To receive in 70cm I have another serial port,
> I guess the only other alternative is some sort of swap of 1271 for a 23cm Yaesu module... Any takers (or is this a bad idea)?
Try also with switchboxes, USB-to-serial interfaces, serialport-card,
and so on. But look, if the hardware will be supportet from the
> Greg KO6TH
Mit freundlichen Grüssen, Regards, 73
Thomas Frey, HB9SKA
Thomas Frey, Holzgasse 2, CH-5242 Birr, Tel. + Fax: 056 444 93 41
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