----- Original Message -----
From: "James Moritz" <[email protected]>
To: <[email protected]>
Sent: Monday, November 11, 2002 10:31 AM
Subject: Re: LF: Question on building homebrew variable caps...
At 21:28 10/11/2002 -0600, you wrote:
>I would like to know if anyone has built variable capacitors for
>transmitters or tuners. I would like to build a variable capacitor that
is
>at least 100pf and can handle 40 amps of RF current. Does anyone have any
>ideas or links to some articles???
>Thanks es 73's,
>Mike>WE0H
>http://www.we0h.us/lf.html
Dear Mike, LF group,
What frequency is it for? Surely not LF - at 185kHz, the voltage rating
might be a problem - about 340kV with 40A!
This is what I have been saying all along about loops and power levels
around the 1W plus on LF. The only sensible antenna for transmitting on LF
is a vertical to cater for medium and higher power levels.
Loops work for receiving with the directional limitation but then a few feet
of wire lying on the ground works just as well !!
de G3KEV
Cheers, Jim Moritz
73 de M0BMU
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