Hi Thomas,
Ok, that's what I figured. Time to break out the C compiler and figure out how to twiddle the modem lines. Good to know that it can be done.
Thanks,
Greg KO6TH
Date: Fri, 19 Dec 2008 19:53:36 +0100 From: [email protected] To: [email protected] Subject: [sarex] 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 software.
Greg KO6TH
Mit freundlichen Grüssen, Regards, 73 Thomas Frey, HB9SKA ______________________________________________________________________
Thomas Frey, Holzgasse 2, CH-5242 Birr, Tel. + Fax: 056 444 93 41 http://home.datacomm.ch/th.frey/
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/sarex
_________________________________________________________________ Life on your PC is safer, easier, and more enjoyable with Windows Vista®. http://clk.atdmt.com/MRT/go/127032870/direct/01/