[TowerTalk] vertical antenna feedpoint

john at kk9a.com john at kk9a.com
Sun Mar 16 21:52:55 EDT 2025


This seem very odd, even with a mediocre ground.  How are you measuring the
impedance?

John KK9A


WW3S wrote:

what should the impedance be? I thought I read somewhere ideally around 
36-40 ohms...testing my new 30m vertical showed around 75 ohms, and 
mostly flat for 2 meg or more, which I seem to recall is really not the 
best...am I correct that while a wide bandwidth seems good, it really 
isnt, I think maybe its telling me the radial system needs improved?

73




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