[TowerTalk] vertical ant ?

[jacobsen_5@msn.com]

Lee,  Your 1/2 correct. The main purpose of the base coil on the Butternut is for matching. The antenna is short on 80/40 so it is used as a shunt to ground to cancel out reactance.  The better the grnd radial system the less inductance you need (spread the coil out). On a Butternut I once had up, I had 32+ radials out to 50' or so, and I ended up with a scrap box coil of abt 3 or 4 turns/2" in diam. The supplied coil was to big. (I don't know why, but I keep selling the Butternuts.....Then I buy another, used of course). Good luck with your project.

73
K9WN  Jake