[Kenwood] Difficulty keying linear in CW with TS-850

[Vince Shirley]

Abe,

Thank you very much - I'm pleased at any rate that its a known problem and
that there is a cure.

I'd be very grateful if you could find out a mod which would enable me use
the linear in CW


Vince G0ORC


-----Original Message-----
From: Dr. Abram L. Winters [mailto:awinters01 at sbcglobal.net]
Sent: 04 June 2004 10:35
To: Vince Shirley
Subject: Re: [Kenwood] Difficulty keying linear in CW with TS-850


Vince it could be several things. First, the chattering sound is coming
probably from the fact that the RF is seeing an open circuit and the
antenna tuner/swr circuitry is reducing the power to near zero. If you are
controlling the linear through the REMOTE connection, the signal to the
linear in that type of operation is too slow. This is typical for 850's in
CW. Someone else on this list had a similar problem and there is an
external keying system that he used to overcome this problem. I'll see if I
can find that, or perhaps someone on the list can help with that.

Abe, WB8SOC

At 02:48 AM 6/4/2004, you wrote:
>Hi all,
>
>I've just acquired a TS-850 for a very good price and am pleased with it in
>all respects with the exception of one item.
>
>When attempting semi break in on CW, the rig keys the linear OK (ground to
>transmit) but there is no RF output and the rig emits a fast "chattering
>relay" type of sound.
>
>If I manually ground the linear, or use the rec/send switch all is OK on CW
>as it is in SSB.
>
>I've experimented with SW1 (external/internal keying) which doesn't make
any
>difference (neither did I expect it would) and the VOX hang time doesn't
>seem to make any difference to the problem either.
>
>Am I right in thinking that the fact that that there is no RF would
indicate
>that its either seeing an open circuit or the switching time is too slow.
>
>Anyone any ideas ?
>
>Vince G0ORC
>
>
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