[Elecraft] HF Antenna: was G5RV

[Edward R Cole]

I have found that resonant antennas work best for me: on HF or VHF+.

I have a 80/40m dual inverted-V with apex at 45-feet and 80m ends at 
22-feet that works very well out to 800-miles (so I would consider it 
good NVIS and moderately good for longer distance). It is fed with a 
current balun and coax cable.  I use a MFJ-945E tuner to improve 
matching off center frequency: 3920 & 7150 KHz.  Some years ago I had 
a 252-foot 160m dipole, but it was too close to ground for a decent 
radiation angle (top loaded verticals seem better for the top band).

Before setting up my Hygain TH3mk4 triband yagi, I also used a 20m 
dipole.  I have a 10m/6m dual-band J-Pole which is resonant on my 
favored frequencies and again can be tuned using the antenna tuner to 
extend off frequency.

I use a 43x122-foot Inverted-L with base loading coil on 502-KHz.  I 
plan to try tuning it for 160m, as well.  The antenna is resonant 
with base-loading over a 5-KHz bw, although extremely short on 600m 
(quarter wave = 490-feet); radiation resistance =0.8 ohms.

Thus I avoid high SWR on transmission lines (<3.5:1).

73, Ed - KL7UW
I run 100w on 502-KHz, and up to 270w on 160-10m using either the K3 or KX3.