I have built many Base loading coils for the DX commander, but how about building one that uses the DX commander pole and a 1/4 wave element for 40M that means: No plates, No fold back, and just one element for both 40M and 80M. 4 Tap points means it can be used on both the DXC Classic and expedition with both 11.2M or 9.68M element lengths for the 40M band and they will work on 80M.

You will need a lot of ground radials and one or two around 20M in length.

Element Length = 9.68M or 11.2M DXC Classic
Pole length = 9.7M
Coil hight = 15cm
Number of turns total : 30=29.7uH
tap 4 turn. 24 = 21.5 uH
tap 3 turn. 23 = 20.5 uH
tap 2 turn. 19 = 15.5 uH
tap 1 turn. 18 = 14.5 uH
I do hope you enjoy it and subscribe for more..

Many thanks
Mike - M0MSN
To get notified of the next upload .click that bell and subscribe..

свернуть