On Mon, 12 Nov 2007 12:17:29 -0500, jeremy-ca wrote:
>The loads covered up to 1500 KHz or so and
>above that the cap had to be changed.
I know you said that, but I don't believe it. 540-1700 kHz is a 3:1 range.
In most RF systems, a dummy load needs to be pretty close to purely
resistive. It is hard to believe that what you describe could achieve that
over anything approaching a 3:1 frequency range with a wire wound resistor.
It certainly could be achieved, to some reasonable tolerance, over the
bandwidth of one broadcast station.
>I see no reason why an inductive resistor cant be used with reactance
>compensation in a monoband load such as used in a 160 or 80M 4 square.
Over a narrow frequency range it might be made to work.
73,
Jim Brown K9YC
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