I received an email from a follower that had questions about my final configuration of the matching network for my 43′ vertical.  I promised him I would take some pictures of it the next time I was up at the Ranch, so I did that yesterday.

A couple of them are a little blurry, but there are enough to see what is connected to what.

43′ Vertical Matching network

As you can see above, I have lots of radials installed beneath the vertical.  There are 32 of them, each 40′ long, mostly buried an inch or two underground.

After troubleshooting the matching network, I never repaired the burned-out choke on the transmitter end of the bias tee network.  Instead, I used a length of cheap RG-6 cable, totally separate from the RF path, to carry the +/- 12 volts to energize the appropriate relays for the different bands.  It enters from the bottom through an f-type connector installed between the two terminal strips.

bottom balun / relay selection area

The RF enters on the right, through the SO-239 socket, and feeds into the balun in the center.



Top Coil with taps


Small Coil with tap


Relay wiring


Balun Wiring

43′ Vertical Antenna Construction – Pt 1

43′ Vertical Antenna Construction – Pt 2

43′ Vertical – Part 3

43′ Vertical – Part 4

New Etching Solution

43′ Vertical – Part 5 – Matching Network

Field Day 2010 – Preparations

Field Day 2010 – Preparations Part 2

43′ Vertical Matching Network Debugging

43′ Vertical Matching Network Debugging – con’t

T-Bias interface

Choke Self-Resonance

Tilt-Over Support for 43′ Vertical

43′ Vertical Final Tuning