[Elecraft] K3 - what power supply are you using?

Mike Sanders k0az at centurytel.net
Thu Oct 11 10:28:57 EDT 2012


I have been using a commercial switching power supply
for many years. It is a Power Source bolted to the back
of my desk. 45 amp is what it says. Been on 24/7 365
for over 12 years. In this location. It was used for years
before this set up. Thought I had a problem with it some
months back but found out it was fine. The multi Anderson
power pole outlet strip was poorly constructed and causing
a serious voltage drop to the gear. I cleaned up lots of
solder slag, bad joints and mechanical connections and
the strip is back in service with the old supply. 
I had hundreds of these supplies in commercial service
many years ago and rarely had a failure. 
I am using it to run an Icom 756PROIII, K3/P3SVGA, K2/10
K2/100, 2 Elecraft transverters and a KAT100 tuner. The
K3 and K2s are pretty well loaded. Several accessories
hang off this supply set up.
I never hear it and have never noticed noise from it. It
got a break of about 6 months several years ago when I
ran the station off 4 batteries and some Harbour Freight
solar panel sets. It worked but my operating is enough
that I needed to supplement the solar with some wind
and increase the solar capability. Hoping that this will
be in place next Spring. In the interim the old trusty 45A
Power Source just keeps on working. 
Years ago there were some problems with the Astron analog
supplies on certain ham bands. 40 meters if I remember. RF
would shut the supply down. There was voltage but no current
capability. A turn off and turn on would fix it till the next time.
Also, I agree about the fans in the SS25/30M switchers. Never
noticed any RF hash but the fan noise was an issue. 
73, Mike K0AZ

 
 
                    Mike Sanders 
                        KOAZ
       
 
 


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