[Elecraft] KPA500 Voltage?

[Rick Bates, NK7I]

Too high at THEIR location.

Power company feeds, vary (not a lot but their load changes, they adjust).

House wiring varies and other devices on that circuit can cause other 
variations too.  Older homes (1950's and older) often have less capacity 
than newer homes (didn't need it then).  Today we use a LOT more energy 
than then; some house circuits are no longer 'adequate' (causing fires 
in some cases because folks abuse the wiring in ignorance).

Part of station set up and operations, is knowing what the circuit(s) of 
the house wiring, is connected to besides the station.  Fridge, washer, 
HVAC, electric oven shared with the station?

If you need one more tap to get within the right voltage window, use one 
more tap to achieve that.  If you change circuits, remeasure.  And if on 
the same circuit, maybe don't run the washing machine or oven at the 
same time as the amp. ;-)

73,
Rick nk7i


On 11/14/2022 6:38 AM, Lyn Norstad wrote:
> Gordon -
>
> I had mine set up, as Rick suggests - but when it was in for service, they dropped it back a notch saying it was too high.
>
> My readings now agree with yours.
>
> 73
> Lyn, WØLEN
>
>
> -----Original Message-----
> From:elecraft-bounces at mailman.qth.net  [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Rick NK7I
> Sent: Saturday, November 12, 2022 1:03 PM
> To:elecraft at mailman.qth.net
> Subject: Re: [Elecraft] KPA500 Voltage?
>
> I'd move it up one tap as long as it does NOT EXCEED 85V at receive.
>
> Higher voltage not only gives you better output but also cleaner.  That
> matters too.
>
> 73,
> Rick nk7i
>
>
> On 11/12/2022 10:25 AM, Gordon LaPoint wrote:
>> My KPA500 is showing 57-58 VDC at 450-500 watts out, and 71-72 VDC on rx.
>>
>> Is this normal or should I move up one tap?
>>
>> Thanks,
>>
>> Gordon - N1MGO
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home:http://mailman.qth.net/mailman/listinfo/elecraft
>> Help:http://mailman.qth.net/mmfaq.htm
>> Post:mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by:http://www.qsl.net
>> Please help support this email list:http://www.qsl.net/donate.html
>> Message delivered torick.nk7i at gmail.com  
> ______________________________________________________________
> Elecraft mailing list
> Home:http://mailman.qth.net/mailman/listinfo/elecraft
> Help:http://mailman.qth.net/mmfaq.htm
> Post:mailto:Elecraft at mailman.qth.net
>
> This list hosted by:http://www.qsl.net
> Please help support this email list:http://www.qsl.net/donate.html
> Message delivered tolyn at lnainc.com  
>