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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