[amsat-bb] Re: Doppler Tuning IC-821H

Erich Eichmann erich.eichmann at t-online.de
Mon Feb 7 00:44:42 PST 2011

Hello Paul,
you didn't purchase the wrong radio, hi.
SatPC32 supports CAT control of the IC-821H.  A friend of mine and I myself
used the IC-821H for several  years. I have just tested CAT control of this
radio once again under Windows 7, 32-bit, and Vista, 64-bit. CAT control
works flawlessly. With SSB-satellites I could tune the RX frequency with the
radio's VFO knob and the program tuned the TX Vfo to the right uplink
frequency (transparent tuning).

My settings in menu "Radio Setup":
Model: IC-821H,
CAT baudrate: 19200,
Icom address: $4C (both values, default address of the IC-821H).
COM port number of the USB-to-Serial adapter,
CAT delay: 70,
Option "Satellite mode" checked, all other options unchecked.

I usded a C-17 compatible home build CAT interface (see sub folder "Icom" in
the SatPC32 program folder) and a Prolific and  also a FTD single port
USB-to-Serial adapter.  Both adapters work. It is most important, however,
to use Vista and Windows 7 compatible drivers.

My PC has a genuine serial port and 2 additional serial ports on a PCI card
and they work also with 32-bit and 64-bit Windows.

For detailed instructions read the "Hints[Radio] ... for Icom users"
(SatPC32 menu "?"). Regarding Vista and Windows 7 compatible drivers for the
USB-to-Serial adapters see my website www.dk1tb.de, English page
"Downloads", "Vistad and Windows 7 Compatiblity".

55 + 73s, Erich, DK1TB

----- Original Message ----- 
From: "Paul Delaney - K6HR" <paul.hamradio at verizon.net>
To: <amsat-bb at amsat.org>
Sent: Sunday, February 06, 2011 7:06 PM
Subject: [amsat-bb] Doppler Tuning IC-821H

> I just acquired an ICOM IC-821H as I plan to build a satellite capable
> station. I cannot get HRD to tune both uplink and downlink. Seems the CAT
> commands in the ICOM don't exist or are not supported.
> Am I stuck turning the dial manually on this radio, or is there another
> program that can tune both the 2m and 70cm on an IC-821H?
> Paul Delaney - K6HR
> paul.hamradio at verizon.net
> http://k6hr.dyndns.org:8080
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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