Retracting mechanism for antenna ground plane radials

Details Retracting mechanism for antenna ground plane radials Retracting mechanism for antenna ground plane radials

1977-06-01

1979-04-03

Lieberman, Eli

Communications: radio wave antennas

Antennas

With grounding structure

343882, H01Q 108, H01Q 938

Patent

active

041480376

ABSTRACT:
A portable aerial consisting of a vertical whip element and a number of laterally extending arms forming a ground plane. The arms are resiliently pivoted at their inner ends in a mechanism which permits the arms to be deflected downwards and to return to their operative positions but which locks them in an upward position if they are deflected too far upwardly. The aerial can then be inserted through small apertures in trees etc. the obstructing branches deflecting the arms downward, temporarily, on entry and upward, permanently, on withdrawal.

REFERENCES:
patent: 2674693 (1954-04-01), Millet et al.
patent: 2763002 (1956-09-01), Fitzgerald et al.

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