Lloyd:

Thanks for the additional very helpful suggestions.

As a point of clarification, when I substituted the Kenwood supply, I ran it
directly to the rig, independent of the rig runner.

Perhaps it would be interesting for me to try the other supply through the
rig-runner as well, to see if that changes anything.

Tom Behler: KB8TYJ


-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Lloyd Rasmussen
Sent: Sunday, April 06, 2014 8:31 PM
To: [log in to unmask]
Subject: Re: Raising Voltage on RS35 Supply

I recommend carefully checking the voltage at the rig end of the rig-runner,
to see whether it changesfrom receive to transmit.  The nominal voltage for
most solid-state rigs is 13.8 volts, which should not be exceeded.  Ifthe
voltage at the transceiver dropes to even 12.5 volts, you have a problem
with cable resistance that should be addressed before you start adjusting
the voltage at the power supply itself.  When you substituted the other
power supply, was its current also running throughthe rig-runner?




Lloyd Rasmussen, Kensington, MD
http://lras.home.sprynet.com
-----Original Message-----
From: Tom Behler
Sent: Sunday, April 06, 2014 11:59 AM
To: [log in to unmask]
Subject: Raising Voltage on RS35 Supply

Hi, all.



Please forgive me, since I know this has been discussed several times
already on the list. . In fact, I think it came up a couple of years ago on
a discussion thread in which I was involved.



Basically, I've just re-confirmed an interesting observation here in the
home shack.  When I run my TS590 with my Astron RS35 linear power supply and
rig-runner, I only get 75 watts out of my TS590.  I did the testing  on 40
meters where my DXCC gives me a solid 1.1 to 1 SWR reading both with the SWR
meter in the TS590, and my TW1.



Just for kicks, I disconnected my TS590 from the rigrunner and Astron RS35,
and tried a Kenwood PS53 linear supply that I also have here in the shack.
When I keyed up the TS590 with the Kenwood supply, I got a solid 100 watts
out of the rig.



This leads me to believe that the voltage on my Astron RS35 may be slightly
lower than the TS590 would like to see.



Could someone give me some safe and full-proof instructions for raising the
RS35 foltage level?



I know some on the list have done this, and survived the experience.
(smile)



It may be a while until I get to do this, and I'm not going to obsess about
the slightly lower output power with the TS590 and RS35.  But, it would be
nice to get the full 100 watts out of the rig when running barefoot if at
all possible.



Of course, in the meantime, I'll check and clean all of my RS35 and
rig-runner connections to be sure that nothing else might be contributing to
the problem.



Thanks much, from Tom Behler: KB8TYJ