Before initial adjustment

Before adjustment of the coil begins, the resonance of the two elements is to be
checked and eventually adjusted. This is done with the coil in position 3 (in short).

Measurements to be made on installed antenna and with connected ground (= car frame),
without tuner. The resonance is measured (= minimum SWR) with an antenna analyzer
connected at the end of the coax:

1st. Check
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Only lower part + whip, coil tap 3.
Set lenght of whip to 77cm (including metal sleeve).

Resonance = 21.0 MHZ (+- 0.4 MHz)

If resonance frequ. is lower, then the number of turns is too high.
Remove turn by turn to obtain required resonance frequency.
(I have exactly 79 turns on lower part).

2nd. Check
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Perform this check after check 1 is terminated.
Both parts + whip, and coil tap 3.
Set length of whip to 25 cm (including metal sleeve).

Resonance = 14.2 MHZ (+- 0.3 MHz)

If resonance frequ. is lower, then the number of turns on upper part is too high.
Remove turn by turn to obtain required resonance frequency.
(I have exactly 120 turns on upper part).

After completing these checks continue (press "BACK")

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