Very interesting Tom.  I am suspecting my old rs-35 here to.  The HF
stations work fine, but when I transmit on the tmv-71, the cooling fan slows
way down.  I put it on a separate supply, which solved that problem, but
introduced another.
Have to make a long CW contact to see how warm the transistors on the back
get.


-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Tom Behler
Sent: Friday, December 11, 2015 7:46 PM
To: [log in to unmask]
Subject: Question on New RS35 Metered Power Supply

Hi, everyone.

 

Well, I got my new Astron RS35 metered linear power supply yesterday, and
set it up tonight here in my home shack.

 

Everything seems to work well, in that I get the output power readings I
would expect on resonant HF frequencies via my TS590, and on VHF/UHF
frequencies via my TMV71A.

 

I have noticed something, though, that I could use some input on.

 

For some reason, this new RS35 has a bit of a louder hum than I noticed with
my older unit.

 

Has anyone noticed this sort of thing with the newer RS35's, and if so, were
you able to do anything to address the issue?

 

I might consider moving the supply to another location, because right now,
it is on a shelf just above my operating position.  However, I will need to
be certain that the newer location gives the supply sufficient space for
ventilation.

 

I am not sure the problem is significant enough to return it to HRO, but I
would be curious if anyone has had a similar experience, at least recently.

 

Tom Behler: KB8TYJ