JYR8010-150W Multi-Band End Fed Half Wave Antenna 8 Bands 3.5-29.7 MHz No Tuning

For $99 this was a great purchase. I deployed this antenna about 30+ feet in the air and hung it on branches of 3 trees in my back yard. I have worked 10, 12, 15, 17, 20, 40, and 80 meters with this antenna on an old Kenwood radio with great success. From Virginia, I have made contacts in Russia, Poland, Scotland, France, Canada, Spain, Bosnia, Belgium, Puerto Rico, California, Florida, and many more across all bands. I get a 5/5 to 5/9 signal with it and I am very happy! I recommend!

It works as it should.

This is a beautiful 49:1 EFHW antenna! Heavy gauge antenna wire, end insulator, clamp, and housing. The toroid is appropriate size for higher power (100w+) and the wire gauge matches. I've made a few EFHW antennas for QRP myself, I appreciate the heavy duty enclosure on this. It has a few pounds of weight to the whole antenna!I'm not able to string it up due to snow, but I have been using my own EFHW antennas for years and know they work great.

I started by hanging the balun 15 feet up. I ran the wire a distance of 65 feet to a tree up the tree 40 feet .. I then strung the remaining wire across to a 2nd tree, also 40 feet up .. I am using RG8x low loss line .. Used an IC746pro with an internal tuner and I also bypassed it using an external ATU, no matter what I tried the VSWR was greater than 5 for each band from 3.5 - 30 .. I hooked the antenna up a IC725 using a manual tuner and got the a similar VSWR reading .. There is no problem with the fedline or the connections to the balun or radios .. the line is about 20 feet from the nearest building .. I haven't used an analyzer yet, but the antenna wasn't suppose to require any tuning .. I also checked the line for any breaks or damage ..

This doesn't have a counterpoise. But electrically, there _has_ to be a counterpoise. So, what is the counterpoise with this antenna? It's the shield of the feed line you connect to this antenna, your rig, everything connected to your rig, and you.And of course digital modes are popular these days, and this is going to cause RF feedback into the audio interface from your computer to your rig.The correct length feed line to create a 50 ohm impedance is 0.05 wavelength. Very short. So, you will have a correct impedance and low SWR, but very poor efficiency, because obviously a tiny counterpoise won't balance the radiator, and you can't force current into a 1-terminal circuit. But then, a lot of hams work the world on small loop antennas that are really only 5% efficient, so you will be able to contact stations. But a correctly erected fan dipole would be many times more efficient.I went on the site of a popular ham radio dealer, and the end-fed they sell works the same way as this one. So, it's a common issue with this sort of antenna, but it's still an issue.