During Christmas 2016 I replaced the old
Alpine Antenna with a nice looking a new TarheelII Antenna
and reinstalled the FT-857 into the truck. Having access to a metal shop I was able to make a mounting system that fit my needs. I wanted to have access to 80 and 40 meters
while driving around and found that the Tarheel fit my needs and looked nice too.
I ised a section of round delrin and turned it to fit on the lathe to make a short non conducting spacer. With
this installation I spen some time with 1/2 wide grounding strap trying to bond
the the major parts of the old truclk together. I can hear a little ignition
noise sometimes but I am good enough with the installation.
time was spent analyzing the performance of the shunt coil which paid off at getting a good match where ever I tuned to.
This type of antenna is a compromise as we cant cheet physics, but it is a well matched compromise.
For the screwdriver
controller, I am using a product that I never brought to market. It is a puls counting memory controller that actually
works better than I thought it would. It uses the same hand held controller that is used on the Portable Rotation Single
axis Rotor system, with different firmware.