The same in my mobile HF system.
When the Henry SS750 kicks in on 40 meters at 1.1 KW, the aircon fan starts
to increase speed.
Cheers, Dick
PA3DUV
----- Original Message -----
From: "kenw2dtc" <kenw2dtc@comcast.net>
To: "Bill Fuqua" <wlfuqu00@uky.edu>
Cc: <amps@contesting.com>
Sent: Friday, July 22, 2005 11:03 PM
Subject: Re: [Amps] 4CX250 bases (David Kirkby)
>
> WA4LAV asked: "I have often wondered if strong RF fields ever mess up the
> brushless motor's internal controllers?"
>
> Yes they do. I had a friend who ran a 4000 watt CB transmitter in his
> van.
> (two 270 amp Leese Neville alternators with a variable field that would
> allow the voltage to hit around 21 volts).
> When he keyed the mike, the six cooling fans would vary, some at half
> speed,
> some slower, some completely stopped. He never figured out if the RF was
> radiated from antenna to the fans or if there was RF on the common DC
> feed.
> (There was virtually no voltage drop because of the huge welding cable
> size
> feeds).
>
> The first time he visited my house, he got into everything, all audio
> equipment, telephones and TV sets. With the power mike turned all the way
> up and the non-linear amp, he was basically an RF SQUARE WAVE on wheels.
> I
> always thanked him for not being on the amateur radio bands.
>
> 73,
> Ken W2DTC
>
>
>
>
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