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This BalUn has been designed by us for a multi purpose applications.
2x T157 toroids coated with epoxy paint for extra durability.
A six ratio 9:1 & 4:1 & 1:1 & 1:2.2 & 1:7.3 & 1:1.8
Designed for 3-30MHz.
Power rating 250 W SSB.
Windings of trifilar enameled wire, and quader filar enameled copper wire.
Low insertion loss.
2x SO-239 connectors
All hardware is Stainless Steel.
The BalUn is installed in a weatherproof 120mm X 78mm X 55mm IP65-ready box, that are excellent for outdoor installation when a lid is sealed. (you may like to add seal)
An ideal solution for a dipole or delta antenna, a multi output gives you an extra option for better tune in to an antenna.
Run 2x feeder lines, use an antenna selector and enjoy adittional reserve in tuning your antenna with reduced usage of ATU.
THE SAME UNIT MAY BE MADE AS UNUN.
Other ratios possible
We can make UnUn/Balun matching lower impedance to 50ohm
T130-8/90 toroid coated with epoxy paint for extra durability.
Design 1.8-30MHz frequency response
Transfformation ratio: 1:1(default) or 4:1 (on request)
Power rating 150 W SSB @ SWR ...