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The GS version differs from the standard G version mainly in its larger diameter. The loop elements here
consist of 1 m long 12.7 mm (1/2") coax cables. Low-attenuation "Flex" or "Superflex" cable with a shield
made of solid, corrugated copper sheet (100 % shield coverage) is utilized. This results in very high
attenuation values against interfering radiation.
The increased loop diameter enables stronger reception on low frequencies. In conjunction with the
amplifier version RLA4 from version "J" (standard in all RLA4 from November 2021) the lower cut-off
frequency drops to approx. 20 kHz. The levels in the range from 50 kHz up to the lower KW range are
approx. 3 dB higher compared to version G with lower inherent noise power.
However, the larger loop circumference also increases the self-inductance of the loops and thus causes a
reduction in antenna current at high frequencies. This is partly compensated by the much thicker inner
conductor of the cables (lower ohmic resistance, reduction of inductance with increase of conductor
diameter). Overall, the reception performance of the RLA4GS above approx. 7 MHz (40 m band) is about
the same as that of the RLA4G.
RLA4G and RLA4GS
Assembly instructions
The coaxial cables are equipped with connectors according to standard "4.3-10". These are very robust
and waterproof connectors similar to the "N" standard. There are versions with knurled screw connection
for tightening by hand (as with TNC or N) and with hexagon nut (SW 22).
When mounting the cables without tools, follow the instructions as for version G with TNC connectors.
Basically, these also apply to the hexagon nut version. However, a tighter screw connection can be
achieved here by using an appropriate tool (open-end wrench). However, the tightening of the screw
connections must only be carried out with low force (only a little more than the nuts can be tightened by
hand)!
The instructions for absorbing movements under wind load must be observed in particular!
VERSION
DATE
1.4
24.11.2021
Version RLA4GS
K & M Burkhard Reuter
NAME
RLA4G/GS
B. Reuter
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