[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Longest practical ground cable?
Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-uswest-dot-net>" <jimlux-at-earthlink-dot-net>
considering that most TC's run at a few hundred kHz, max, the wavelength is
on the order of hundreds of meters, so 30 feet is nothing if you are
worried about resonant feed line problems.
A bigger issue will be the series inductance. Try it and see. If you
start to have odd problems, keep your earth ground, and add a chicken wire
counterpoise under the coil.
Tesla list wrote:
> Original poster: "Garry Freemyer by way of Terry Fritz
> What's the longest RF ground cable I can have?
> I've been thinking maybe I could drive a rod on the edge of my porch.
> Trouble is, the thing is 30' away. That seems to be too long. With ham
> radio, if I remember correctly, the ideal ground cable has to be shorter
> than a quarter wave of the frequency you are transmitting on or it could act
> as an antenna.
> I'm assuming it's the same with TC's