[sarex] Re: Computer control of ICOM 1271A?

Thomas Frey th.frey at vtxmail.ch
Mon Dec 22 09:33:11 PST 2008

Iain Young, G7III schrieb:
> Sorry for the slow response, but:
> Greg D. wrote:
>> 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?  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.
> IIRC the Icom *71 series used the CI-IV interface (Later models such as
> the 75 series used the more well known CI-V interface)
> CI-IV was a parallel interface, and Icom did do a (probably expensive)
> CI-IV to CI-V converter, which was probably not much more than a TTL
> Parallel-Serial converter
> Since I know the CI-V interface is so well documented, hopefully the
> CI-IV was as well (was before my time...)
> 73s
> Iain
> ----
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Hello Iain and Greg

With the externally CI-IV interface you need also the internally
IC-EX309 interface unit. It has the centronics connector and 2
connectors to the TRX board.


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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