[Elecraft] Switchers

[peter gerba]

Hi Crafters;

I recently took my TS 930 out of service due to local high power (I mean
HIGH) CBers getting into one of the IFs.  A TS-850 replaced the 930 with
few of the IF problems. I also noticed that the 850 had little trouble with
the computer across the room.. I had all the covers off the machine for
weeks as I evaluated some new boards.  I had to turn the computer off when
using the 930.  

I had power supply trouble here with the 850 last week and replaced the
supply, with a Astron switcher, that was stored as a repeater back-up. I
didn't notice any noise on the 850, but, my broadcast band radio didn't
like the supply at all.  I placed cores on the AC and DC outs from the
supply with no improvement.  I think the design of the supply and of the
850 made a good match.  I've had serious problems with Lambda switching
supplies and 2 meter transmiters getting into the supplys and shutting them
down.  No trouble with switchers on 1.2Ghz so far.

pete