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3-band OCF wire antenna 2KW

Multi-band wire antenna for 40,20,10,(6)m
1:4 current balun according to Guanella with two toroids
TX58/41/18-4C65 large toroidal cores wound with Teflon ® strand silverplated AWG16
BAGB-180 Balunbox with SO239 socket (N female on request)
quality antenna litz DX-WIRE FS (tinned copper) with uv resistant PE insulation
Wingspan 20.4m (leg lengths 13.6m + 6.8 m)
Rope clamps made of stainless steel AISI316
large plastic egg insulators
weight: 1.1 kg
Power handling: 2KW (if SWR below 1:2)
SWR usually below 1:2 Almost identical to the 6-band version (Item No. 05001), there were
only the side lengths halved!                                

In Europe, a 1:6 balun is used for Windom (OCF) antennas usually. We use however, 
a 1:4 current balun according to Guanella. In our view, this has the following
advantages:

- better adaptation on 80m
- high power capacity
- broadband matching
- good supression of currents on the outer coax shield
 
I have been working over 10 years on Windom antennas with this
1:4 current balun and I have performed many experiments. Both I
and my customers are always surprised about the good results of
this simple wire multiband antenna.

 
When operating at 100 watts an additional choke balun is not necessary.
But with higher transmission power, however, we recommend the use

of additional choke balun at the feeding point.
 
 
 
 
 
 
 
 
 
 

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