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
If you have a version prior to 6.X, HRO said to contact Yaesu for a new
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
- - - - - - - <snip>- - - - - - - -
>(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, firstname.lastname@example.org
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