[600MRG] 600m antenna choices..

[Dave Riley]

Steve, good to hear from you...

Yes, I shoot the HV dog fence wire up over the high pine trees using a 
compound bow to obtain the 600' circumference but smaller will work well 
also especially with LOW 'R' wire like litz...

The HV vacuum variable cap. is located here in the bud rack with ONE 
piece of wire leaving through a wall insulator, up and over the trees 
and back to the other side of the cap... No feed line, no tuner, no big 
bux $$..
This allows me to resonate the loop from 17khz to about 800 khz with ease...
Next is to couple the loop through a suitable toroid to a secondary 
winding ( about one to one turns ) to the RX/TX relay but that is only 
one way...

Now I run full QSK here by doing the following;  Instead of using the 
toroid and relay I use 6 turns of HV wire in series with the loop wound 
over the bottom end of the TX final PA variometer ( transmitter output )...
For receive I place an e-probe near the top of the variometer and this 
eliminates a need for clanky relays etc.. Pure, clean QSK...
Yes on bi-directional and high Q.. So for one piece of wire and one 
capacitor I get to couple in to the HV lines going by the house headed 
NE to the salt water with great results to the NE ( EU )...

Simple is best, so why try to heat the ground with radials?? Especially 
on top of silica soil ( like in free space )...

My 2 cents...  TNX and good luck from Dave, AA1A

=======================

Hi Dave,

That is one massive-sized loop! You must be using trees for the vertical 
elements. No trees anywhere near that  height here in desert AZ; would 
have to put up masts. But my question is how do you couple to it as a 
receive antenna; there must be some sort of matching to the receiver 
feedline. You didn't mention any of that, thus my question. Also sounds 
like you're fixed-tuned for a narrow receiving freq range if you're 
using a vacuum cap. I assume loop is bi-directional too.

73,

Steve AA7U