[Elecraft] KPA500 external mains switch

[Bob McGraw K4TAX]

I have a whole house surge protector installed at the Mains breaker 
panel.  Thus I find no need to have individual surge protection for any 
of the equipment locations in the QTH.   This takes care of microwave, 
range, furnace, washer, radios, TV's, entertainment systems, phone 
system and such.

Not sure I like or agree with the idea of a separate mains switch.  If 
for remote purposes, remember when turning off the amp via the front 
power switch, one must allow the voltage to bleed down before shutting 
off the main power switch on the rear.  {Per the manual}  This would 
seem to be true with an external switch.

I've assisted many hams with issue resolution only to find out they have 
and use a "big switch" or otherwise to shut down the station.  This IS 
NOT a good idea as many/most microprocessor circuits have provision to 
save data before shutting down equipment.  Thus if one uses a "big 
switch" it kills the DC source thus the processor does not have the 
opportunity to save the data status.   As to what's left......., 
sometimes scrambled data, and that's where the issues arise.

73

Bob, K4TAX


On 1/18/2019 10:11 AM, Macy monkeys wrote:
> Is anyone in the US using a separate 220v external mains switch on their KPA500? I'm wondering where these are available. Or is anyone using a 220 v surge protector? Are these available for the NEMA 6-15 plug?
>
> John K7FD
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