[Kenwood] TS50S intermittent tx

Mon, 15 Mar 2004 09:56:02 -0600

I would look at the output of the DDS circuits. To check when it
malfunctions what frequency is it transmitting on?? Not the one indicated
but the actual frequency measured by a frequency counter.

Clif Holland, KA5IPF
AVVid
Authorized Kenwood and Icom Service Center
816 W Shady Grove Rd
Irving, TX 75060

www.avvid.com

1-800-214-5779
972-870-0630 (Local)
----- Original Message ----- 
From: "Dave K6DLW" <[email protected]>
To: <[email protected]>
Sent: Sunday, March 14, 2004 1:27 PM
Subject: [Kenwood] TS50S intermittent tx

> Hello to the list,
>
> I am having the above problem with my radio. It has manifested itself on
20,
> 40 and 75m. Thus far I have removed the filter board and resoldered
> everything with no change. I am currently trying to obtain a service
manual
> before proceeding further. Anyone else ahve this problem? The output power
> suddenly drops back to about 10 watts and the SWR going into a 50 ohm load
> goes up to about 8:1. I suspect something in the tx output is failing
> causing the swr to go high and the radio then drops the power back.
Sometime
> it will start working again after a few transmissions other times I have
to
> turn it off for awhile then back on. It will then work ok for about 10-15
> minutes and fail again. I thought it might be a thermal problem but
> sometimes it happens when I first power it up. Any help appreciated.
Thanks.
>
> 73 de Dave K6DLW
>
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