Quick Installation Guide
Document
WERA4-Quick-US-200917
Page 34 of 73
5.7
Antenna Tuning
5.6.1 Rx-Antenna Tuning
The antenna tuning coils should be installed with contact grease and secured by means of
the hose clamps. Please attach just loose for the first step, since the depth of shifting in
the tuning coil into the pole will be used for fine tuning later on. Ensure that the ends of
antenna poles (tubes) are clean inside and free of an oxide layer. If required clean with a
metal brush.
The radials should be connected with a little bit of contact grease as well. Attach the
radials without mechanical stress to the guide ropes (using a cable clamp or tape) and
wind it around the guide rope (5 to 10 turns). Attach the end of the radial to the peg by
means of a guide rope. Use at least 50 cm guide rope to keep the end of the radial
isolated from the ground.
Now check the antenna tuning (resonant frequency) and matching (VSWR). We
recommend using a battery driven antenna meter.
Attaching radial to guide rope
Radials twisted around guide rope
Antenna meter with broad resonance
Sharp resonance peak
