TS530S


SUBSCRIBER'S COMMENTS ON QRO MODIFICATION TO TS-830S, TS-530S
AND TS-530SP

I would like to pass on the problem I hace encountered in
connection with the QRO modification to the Kenwood radios
TS830S, TS-530S and the TS-530SP.
The problem occurs after many hours of long winded QSO's.  It
seems that with the increase in the screen voltage from 210
to 300 volts, R37 on the RF unit (#X44-1360-00) heats up
tremendously and will change it's value so greatly that even
the receive either suffers or goes out totally.  R37
originally is Metalfilm resistor at 3.3K ohms and is 1/2
watt.
I have changed mine to a Metalfilm as original same value but
have used a one watt resistor.  The brand I was abble to get
was RCA and I suppose there are better on the market.  This
is a 2% tolerance.  Three units that I know of have had this
problem that I took care of in this area alone.  Two units
were TS-830S and one a TS-530SP.  Just thought I would pass
that information along for what it is worth.  (Thanks, Frank
J. Lukas, Jr., 5301 Main Ave., North Ridgeville, OH 44039)