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Re: Computer control of ICOM 1271A?

Greg D. schrieb:
> Hi folks,
> I'm pretty sure the answer is no, but I'll ask anyway...

Hi Greg

> 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,
totally 4.

> 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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