Wow, I thought I was the only one still using the 8044 chip. Mine is
really old, but never needs anything but a new battery every few years.
The circuit I used has the keyer chip driving a reed relay, so it will
key anything (except a spark transmitter or searchlight, of course).
Some of the circuits using the 8044 just used it to drive a switching
transistor and varied depending on whether the the rig used positive or
negative line keying. Maybe there's just too much voltage drop through
the keying transistor.
73,
Bob WB2VUF
Gary Smith wrote:
> Hi folks,
>
> Thanks for the numerous replies!
>
> I've managed to get things working by using a different keyer. I was
> using a homebrew keyer I made a long time ago based on the Curtis
> 8044 chip. It worked with my old TS-820S, a TR-7 ,Triton, Corsair II
> & Omni V with no problem
>
> It does trigger the Titan 425's relay but that does not trigger the
> Corsair...
>
> Last night I tried using a retired Ham Keyer I gave my Dad back when
> I was a Novice in the late 70's so he would stop using his bug which
> for me was hard to copy the way he used it (Gave him a Bencher paddle
> back then too). The Ham Keyer also uses the 8044 but a different
> circuit I guess for the Ham keyer does the job perfectly.
>
> Has to be something in the output of my homebrew keyer that doesn't
> integrate with the 425. Works great now though, Worked a few new on
> 80M last night and it was flawless.
>
> Thank you all for your kind suggestions and
>
> Happy New Year!
>
> Gary
> KA1J
>
>
>> Hi,
>>
>> I use my 604 keyer into the Titan 425E and the key-out to the Corsair
>> and all works ok.
>>
>> 73
>>
>> Tim
>>
>> gm4lmh
>>
>>
>
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|