Al,
Are you by chance running an end fed antenna?
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 11/23/22 05:59, Wes wrote:
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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