[WT-support] Keying

[Olivier F5MZN]

Hi -

> I also am experiencing the same thing on my Orion in S02R mode.
> 
> My Icom ProII keys perfectly, but the Orion stutters similarly.
> 
> Any help for either of us would be good.  I have a similar computer, 
> Semperon 2800+, XP Pro.
> 
> Larry, N0XB
> 
> ------------------------------------------------------------------------
> 
> *From:* support-bounces at win-test.com 
> [mailto:support-bounces at win-test.com] *On Behalf Of *Hans Johansson
> *Sent:* Wednesday, January 18, 2006 2:21 PM
> *To:* support at win-test.com
> *Subject:* [WT-support] Keying
> 
>  
> 
> I have a problem with the keying of my rig from Win-test.
> I am using the parallell port and a transistor interface.
> Every 5th second the keying is halting. It sounds like a bad
> contact, but it isn't! I have also checked the PTT pin and it goes
> to 0 when the message begins but every 5th second it jumps up
> to around 3 V. I suppose this pulse also appears on the key pin and
> this causes the halting. I think this is a computer problem and not
> a program problem, but how to correct it ? What can it be ? Any ideas ?
> The computer is a Compaq Presario with 1.7 GHz Pentium 4 processor.
> 
> 73 de Hans SM6BGA

If your computer has a a serial port available, would it be possible to 
try to connect your transistor interface on it? This will need, of 
course, a different wiring:

- Pin 7 = PTT (RTS)
- Pin 4 = CW Output (DTR)
- Pin 5 = Ground

You can also try to send a tune using ALT+T to see what happens.

My guess is that a different driver (maybe a printer one) is probing the 
LPT port every 5 seconds.

HTH

73,
-- 
Olivier / f5mzn