> From: Larry <lrpmbt@comcast.net>
> Subject: Topband: Loud clicks
> To: topband@contesting.com
...
> Date: Thursday, December 31, 2009, 11:52 AM
>
> Lately I have noticed loud clicks on the on the first dit
> of a transmission on a few stations. ... After replacing the TR relay
> we discovered the rig was keying too fast for the amp (xmt
> delay) thus hot keying the amp. It also caused the first dit
> to be distorted or missing altogether. Some of the older
> amps have slower open frame relays. BTW we found exact
> replacement relays at Digikey. The clicks remained even
> after replacing the relay.
Here's a circuit that may solve the problem if it is caused by a slow open
frame relay with a DC coil.
http://members.cruzio.com/~k6xx/radio/fastrely.html
HTH.
73,
Mike Waters
W0BTU
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
|