[Antennas] Inductor cleaning

Thu Sep 9 03:29:34 EDT 2004

A Butternut vertical should be adjustable to give a good match for
whatever bands it is designed for (i.e., HF6V, 80, 40, 20, 15, 10, 6;
HF9V above plus 30, 17, 13). It can be tricky (interactions) but with an
MFJ antenna analyzer, and assuming proper grounds (or ground plane
radials if above ground) you should be able to get an acceptable match
across all bands except for 80, which gives about 100 KHz width for 2:1
SWR. The antenna tuner should not be needed, And if you have an older
rig with tube finals (Kenwood TS-830, etc.) you should have no problems
at all.
Dave W9LYA
What wrought doG hath?

On 2004年9月08日 17:11:02 -0700 "Chris BONDE" <ve7hcb at rac.ca> writes:
> I am trying to help an older ham. He is older than I, and I am 
> retired. So I need 
> help as well.
>> We are try to make a Butternut vertical work. I think that the 
> roller inductor on his 
> match box is dirty as when he adjust it , the readouts on my MFJ 
> antenna analyzer 
> jumps around. How do we clean the roller and contact?
>> Also, are the readout good seeing that it is on a vertical which can 
> indicate a low 
> SWR but no transmit. What should we be looking for.
>> TANX Chris opr VE7HCB
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