Re: LF: VLF and SW Fielday Experiment

["Dick Rollema" <d.w.rollema@freeler.nl>]

At 19:40 11-6-03 +0200, you wrote:
> Hallo OM's
>
> we are on air at our Fieldday from
> Saturday, Jun. 14, 12.00 Mez to Sunday, Jun. 15, 14.00 Mez
> from  Phöben, near Berlin with a 4 x 100 meter antenne, designed as
> a
> short wave Quad Antenne. Call is DK0CQ ore DN1VLF.
> Special frequencies are 136,72 KHz and 137,72 kHz(QRSS). Output
> power
> may be 1 Watt ERP.
>
> best regards
> Klaus


When the antenna is a horizontal quad with sides
of 100 metres it will radiate a horizontally
polarised signal straight up ("cloud warmer").  This is of
no use at LF.

A workable system would be to use the feedline with the two conductors in
parallel as a vertical radiator, excited against  a good earth, the
quad acting as topload.  It could turn out to be advantageous to put
ground wires  on the surface below the quad wires to provide a
low-loss path for the antenna currents back to the transmitter. 

If the quad is to be erected in a vertical plane please forget this
message.

I will be listening for your signal in normal CW.

Good luck!

73, Dick, PA0SE