Gary:

Thanks for the careful calculations.

My question is:

What do I do with the other ends of the wires?

Just let them hang somewhere, being sure they are out of range of being 
touched by someone?

73 from Tom Behler:  KB8TYJ

----- Original Message ----- 
From: "Gary Lee" <[log in to unmask]>
To: "tom behler" <[log in to unmask]>
Sent: Tuesday, February 08, 2011 9:34 AM
Subject: grounding solution for 20 m


Tom:

All you need to do is cut a 1/4 wave length of wire, preferrably something
fairly heavy for the freq of interest.
Remember that insulated wire has a velocity factor of around 95%.
so, for the net freq, 300/14.258 = 21.041.

This is in meters, so * 39.37 inches per meter = 828.377. Now * velocity
factor 95% = 786.96 inches / 12 inch per foot = 65.58 / 4 = 16.395.

Now take the decimal portion and multiply by 12 = 4.75 near enough.

so a length of wire about 16 feet 5 inches will be a resonant quarter wave
on the blind hamns net frequency.
Tie this to your ground on the rig and another for your amp.
Be sure to insolate the far ends well.


Hope this helps.