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[Yaesu] FT990 TTL to RS232 interface

To: <yaesu@contesting.com>
Subject: [Yaesu] FT990 TTL to RS232 interface
From: jan.fisher@virgin.net (jan.fisher@virgin.net)
Date: Mon, 2 Feb 1998 16:25:24 -0000
I have just got hold of an FT990 and would like to use the computer  control
via the CAT socket. On reading the manual I see the output is at TTL level
and requires an external interface.  

I have a Kenwood IF-232C level converter which did the same job for my old
TS940. Will the kenwood unit work ok with the Yaesu or is there something
I should know about the level converter.

I have checked the ROM version on the 990 and it is 1.30 which I understand
should work ok with most software packages.

I thought I would ask the question before spending a few hours making up 
leads for something that will not work.

Any other info on known problems and fixes would be appreciated I do not 
think the radio is very old. Ser no 4L380125


Jan G0IVZ 


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