[Elecraft] Running high power

Wes wes_n7ws at triconet.org
Wed Nov 23 08:59:45 EST 2022


I run a KPA500 all of the time; essentially, I run a 500W transceiver.   I have 
never had an issue as you describe.  The only chokes in the shack are the ones 
molded onto the various computer cables that come with them.

Outside, I use a homebrew W2DU type balun (sorry Jim) at the feedpoint of my 
40-80M inverted-vee and a commercial sleeve balun on my little triband beam.  
BTW, both of these antennas are used off-resonance, tuned with a KPA500 in the 
shack for WARC bands. According to conventional wisdom, I do everything wrong. 
Grounding and bonding is a combination of single-point and daisy-chain.  I don't 
have pounds of ferrite on every wire, I use a switch mode power supply for all 
of the low voltage stuff and a Rigrunner distribution box.  And the whole 
station runs on a 120V 20A circuit.

I suspect that you have a rectifying joint some place.

Wes  N7WS

On 11/22/2022 3:36 PM, Al Lorona wrote:
> I'm really curious to ask those on this list who run high power:
>
> Do you find that you get into all kinds of devices around the house?
>
> I ran the KPA-500 in an extended manner for really the first time during the Phone SS and immediately:
>
> 1/ interfered with FM broadcast radio.
>
> 2/ caused the internet to drop out every time I keyed up on the lower bands.
>
> Am I the only one? Those of you who run high power all the time... how do you deal with these annoyances?
>
> Al  W6LX/4
> ___________________



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