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Screw on the antenna cable. The cable to the receiver must have a standard TNC connector (not
reversed as with the antenna elements) at the antenna end. At the other end, a connector
corresponding to the RX input is required (if an RSW control unit is used, a BNC connector).
Important Note: The TNC fittings should be tightened securely to ensure watertightness. Normally,
manual force should be sufficient (always ensure axial alignment / easy screwability without tilting the
connector!). If the force is too low (children, dainty adults, incomplete usability of the hands, ...), pliers can
be carefully used for help. However, excessive force must never be exerted, as this could damage the
seals or even the thread of the connector! Also, the sockets in the housing must not be twisted, otherwise
their seals an inner connections can be destroyed!
Never turn TNC connectors against each other! Only the cap nut may be turned, never the plug
against the socket!
Background: In the plug (the connector on the cable, with RP-TNC this is actually a socket) has spring
elements slotted in the axial direction. When the plug is inserted, these press firmly against the
corresponding contact surface of the socket. If the plug is turned, the sharp-edged slots literally mill off the
contact surface of the socket.
So never e.g. only slightly insert the plug so that the cap nut grips, and then turn the entire cable together
with the connector and nut onto the socket. This is relatively easy because you can use the cable as a
lever. But it damages the spring elements and the socket!
Correct: Press the plug firmly onto the socket (only push axially, i.e. lengthways!) until the threads of the
cap nut and socket are against each other. Now screw on the nut as much as easy possible. Then push
on the plug again, turn the nut a little further and alternately continue until no further sliding / turning of the
nut is possible.
The most sensible approach with the RLA4G is to first slightly screw on the cables to the upper connection
housing and let them hang straight down near the sockets on the amplifier housing. Then plug them in as
described and screw them on completely. Finally tighten the upper connections. In this way, a rotational
movement of the plugs in the sockets can be largely avoided.
After assembly, the shape of the coaxial cable can be straightened out a bit. Usually, the loops
automatically have a slightly "wobbly" shape because the upper housing is smaller than the amplifier
housing. Also, the cables are rarely exactly straight. This can be easily recognized by looking at the
connecting rod and, if necessary, straightening the cable accordingly. However, all these are purely
aesthetic flaws, the function of the antenna is not affected.
With frequent dismantling and assembly, the TNC connectors should only be screwed on so far that there
is stable contact (protection of the threads). The connectors are made of brass, which tends to get
jammed when worn. It is then helpful to use a small amount of acid-free grease (e.g. silicone grease).
If the antenna is likely to never be dismantled again, sealing the connectors by wrapping them with self-
vulcanizing sealing tape is highly recommended. Caution, pay attention to UV-stable material!
EDITION
DATE
1.3
03/08/20
K & M Burkhard Reuter
NAME
RLA4G
B. Reuter
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