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Verfügbare Sprachen
Verfügbare Sprachen
Note: it is absolutely NOT advisable that the mast goes thru the antenna! The mast should end
about 10mm above the mast clamp. If your construction requires the mast going thru the antenna,
one solution would be a fibre glass mast tube. Of course there will be no such problems with the
fore-mast models.
We recommend to seal the N jack with silicone, tape, coax seal, or something else that is suitable.
The U-bolts and even the wing nuts of the mast clamps and made out of stainless steel and require
no sealing.
Stacking antennas
What is required?
Two or four antennas of the same type can be stacked
with power splitters. The power splitter transforms with
nearly no loss the impedance of 12.5 or 25 Ω of the
parallel connected antennas into 50 Ω. The feeding
cables between splitter and the antennas must have
exactly the same length to avoid unwanted phase differ-
ences.
power splitter:
23cm
13cm
Stacking distances
The overall antenna gain can be increased when stacking multiple antennas of same type in verti-
cal, horizontal or both directions. In theory you get an additional 3dB more gain by doubling the
number of antennas at optimum stacking distance. Unluckily there are sidelobes when stacking,
therefore a compromise between minimum sidelobes and maximum gain is to be found. Please
refer to the table on page 1 for stacking distances.
WiMo Antennen und Elektronik GmbH
Am Gäxwald 14 D-76863 Herxheim Tel. (07276) 96680 FAX: 966811
http://www.wimo.com
2-fold
4-fold
18044
18045
18096
18097
- 9 -
e-mail: info@wimo.com
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