Slim Jim antenna. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Antenna Slim Jim (G2BCX). Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / VHF antennas

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The "Slim Jim" antenna proposed by G2BCX for the 144 or 430 MHz band has a gain of about 3 dB compared to a half wave dipole. The antenna is powered by a 75 or 50 ohm coaxial cable.

Antenna Slim Jim (G2BCX)

The dimensions of the antenna elements for the range of 145 and 432 MHz are given in the table:

Table 1

Range [MHz] 145 432
A [mm] 985 + 5 323 2 ±
B [mm] 25 5 ± 19 2 ±
C [mm] 1168 5 ± 390 2 ±
D [mm] 469 175

Literature

VHF/UKW Kollinear-Antenne "Slim Jim" nach G2BCX, ubersetzt nach Radiotechnika 37 (1987), H.8, S.395

Author: W. FAULHABER, Translated from German by N. Bolshakov, RA3TOX; Publication: N. Bolshakov, rf.atnn.ru

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