Interface for the FT-990 (and FT-1000 timeout prob)

Swanson, Glenn, KB1GW
Thu, 15 Feb 96 09:46:00 EST


     Basically, the early FT-1000 radios had a EPROM that "locked up" the 
front panel of the '1000 when CT tried to "read" data from the radio. If 
your '1000 has a version 5.X or earlier version of the control firmware--CT 
will not work. If, you have a version 6.X or above, then all should work FB. 
(Same goes for the '990, I think.)

     1. To find your FT-1000 version, contact Yaesu. (There's a "power on" 
sequence that will result in the display indicating the version you have. 
HRO helped me by telling which keypad keys to hold in while powering up, but 
I forget...)
If you have a version prior to 6.X, HRO said to contact Yaesu for a new 
firmware chip.

     To quote from the FT-990 review in QST, Nov. '9, by 'Rus' Healy, NJ2L:

     "I mentioned in the FT-1000 review that Ken Wolf, K1EA, had plans to 
support the FT-1000 (compatible with the FT-990) in his popular contest 
program, CT. But when he found that it takes *four seconds* to read the 
radio's status via the interface--during which time most of the radio's 
front-panel functions lock up--he decided it wasn't worth the work. The snag 
is that you can't read only one of the rig's parameters at a time (namely 
the current VFO's frequency) via the serial interface--the rig sends *all* 
of its current operating data in response to a status request."
     Well, these days, Yaesu has a fix (new chip), and CT software fully 
supports the FT-1000. Contact Yaesu (per HRO, anyway) if you find that your 
radio exhibits similar traits as those described above--then with the 
addition of a proper (optional) radio-to-PC interface-- you'll be a hot-shot 
in the *contest.

*Whew, got the "C" word in--just in time!

               Vry 73, Glenn, KB1GW
>From: John D. Allen
>To: Paul Dorey
>Cc: ct-user; assarar
>Subject: Re: Interface for the FT-990 (and FT-1000 timeout prob)
>Date: Thursday, February 15, 1996 7:48AM
>Return-Path: <>

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>(Note that early boxes may not work with the FT1000 (and maybe other
>FT's??) due to a specification problem of some sort.  (Apparently
>there was an omission to the FT1000 interface spec.)  The fix is a
>pulldown resistor added to the box on the FT1000 send side..
>I had the FT1000 radio timeout problem with CT (any version) until
>this resistor was added - the problem was that NO data was getting
>back to CT from the radio.  That can easily be checked with any
>73, John, K1FWF
>>         I'm a 'moderate' contester but feel I'm not yet using the full
>> potential of the CT 9.2x's capabilities; one of which is the frequency
>> control aspect of the radio.  Do you have to buy Yaesu's CAT Interface 
>> or are there generic productions being made that are cheaper (sound like 
>> ham?) and one ends up with the same or better results. I had heard that 
>> rigs needed to have manufactorer's designated equipment.  The FT-990's
>> operating manual is pretty quiet about what is needed to do the job.
>> In advance, thanks & 73
>> WN6K, Paul
>> --
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>John D. Allen,
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