Dick PA4VHF,
Bruce ZL1WB has a "long wire" antenna, strung over a valley, and about 1000
metres long if my memory is in the right ball park. The antenna is made of
"power line" wire and the average height is only tens of metres above the
valley floor. The antenna is substantially "horizontally polarised" and
that is not what the text books talk about for launching signal at LF.
However, for frequencies around 180 kHz Bruce has an outstanding signal in
ZL, and was the first to be heard in VK. That "long wire" is easily the
most effective home station LF transmitting antenna for a ZL amateur.
So if you have the room for an experiment, I would advise to "press the
button". I'm not so sure about the wire being only 1 metre above ground,
from both loss and safety points of view.
And don't worry about your call sign, I'm sure you have a suitable PA for LF
;-)
73, Bob ZL2CA
----- Original Message -----
From: "Dick" <[email protected]>
To: <[email protected]>
Sent: Wednesday, March 30, 2005 8:49 AM
Subject: LF: low long wire as TX-antenna???
I wonder if anyone here has experience in using a low long wire as TX
antenna on 136kHz.
I'm thinking of around 400-500m long wire at 1m above ground.
I still have a lot of 'portable'beverage stuff lying around from my
previous activeties:
mediumwave and NDB-beacon DX.
Maybe it's worthwile to try.........
Dick, pa4vhf
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