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G4UGR > INFO 06.08.02 13:03l 26 Lines 979 Bytes #999 (0) @ WW
BID : 000038G4UGR
Read: DB0FHN GUEST
Subj: Re; Buried Antenna
Path: DB0FHN<DB0ZWI<DB0HDF<DB0ERF<DB0SON<DB0SIF<DB0FHK<DB0LJ<LX0HST<HA3PG<
ON0BEL<IK6PYS<LZ1KIS<GB7CRV
Sent: 020806/1015Z @:GB7CRV.#16.GBR.EU #:6298 [Heysham] XFBB7.04h $:000038G4UGR
From: G4UGR@GB7CRV.#16.GBR.EU
To : INFO@WWW
Hello All,
In his book "Practical Wire Antennas", John D Heys G3BDQ describes an
underground antenna developed by CH Targett G6PG around 1927. The antenna
consisted of 60 feet of rubber insulated wire buried 2.5 feet below
ground. The wire was supported on insulated posts and protected by pan
tiles before the trench was filled in.
G6PG discovered that the antenna reduced QRN to almost zero and received
short wave signals almost as efficiently as his elevated wire. His 8W Tx
was fed to the antenna on wavelengths of 150-200m, 90m, and 45m. He had
many contacts up to a range of 1000 miles. The antenna was very
directional all the stations worked lay within an angle of 30 degrees from
its far end.
He describes other designs of underground antennas, and suggests that the
military are experimenting with this idea to perfect the invisible
antenna.
So underground antennas are not such a daft idea after all!
73, Tom G4UGR
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