Randy
Here's another thought.
When I built my keyers I couldn't find the optos,
Sooo, I put a 2N3904 in the opto socket just to try it temporarily. Worked
fine. You need to figure out the proper place to put the E-B-C pins.
The loss of isolation has never been a problem.
And now, 4 years later, the temorary fix continues to serve well.
And the transistor saturates well.
Regards
Ric KV1W
----- Original Message -----
From: "Randy Thompson, K5ZD" <k5zd@charter.net>
To: <writelog@contesting.com>
Sent: Tuesday, October 05, 2004 10:14 PM
Subject: [WriteLog] W5XD keyer question
> I have a W5XD MK-1100 keyer that I have been using for several years. It
is
> a fantastic solution for SO2R!
>
> Getting ready for the upcoming CQWW Phone contest and a guest op that
wants
> to use a footswitch (instead of VOX like I normally do). I can't get the
> PTT outputs from the W5XD keyer to key the PTT of the FT1000D!
>
> Even when I put an ohmeter across the PTT output, it shows a lower
> resistance, but not enough to get the audio tone of my multimeter to key.
> So I see enough to believe that the PTT is being switched, but for some
> reason it doesn't pass enough current to pull in the rig PTT or even the
> multimeter audio signal.
>
> I am connected to the tip and ring (the first two of the three stereo
> connector pins).
>
> Port set up has PTT control set to "On LPT pin 16/COMM RTS)". Have tried
> with "All mode PTT on CW port RTS" both checked and unchecked.
>
> Anyone else seen this? Or have an idea of what I should try?
>
> Thanks!
>
> Randy Thompson, K5ZD
> k5zd@contesting.com
> http://www.k5zd.com
>
>
>
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