Decided to go to a smaller antenna for my little car. Click on picture for larger version. Use a 56 inch whip and reports have been very good. They are all the 40 channel version. All new end terminal ring connectors are installed.
New end-terminal lugs come installed on one of the horizontal radial fastener assemblies to allow for direct antenna to direct ground 12 gauge THHN sheathed, stranded copper wire grounding protection. It was a good price and its held up good. Then they are appropriately marked by original color code for proper installation and directional orientation. So after a few youtube videos I tried tuning it myself because my shop is useless and I don't trust them. It would be impossible to do this with a real-life semi truck!
Hustler BTV Series Trap Calibration Resonance Adjustment Procedure
The feedpoint resistance needs to match our feedline impedance as closely as possible. That's what you would be dealing with in icy conditions. Thanks for the information. I don't know if to coax is bad, the antennas just look like they were beat to hell from trees or something. Losses in making a short antenna radiate instead of reflect power back to the transmitter can be affected by all sorts of factors, including the coil diameter and dielectric losses. It seems that big coils help improve the efficiency compared to a small coil.
A 9-foot whip is mounted to several different vehicles to see if that makes much difference. Then, each of the big coil and fiberglass antennas were tested on our lumber rack mount and re-tested to compare figures and average out possible environmental anomalies. Heat the tubing with a heat gun to shrink it in place, being careful to not melt the insulator. I have three refurbished Super Scanners available. Good thing the lumber rack works the same. The capacitor is the metal can around the coil.