Search results

The horizontal on the jo guns and more like vertical due to the inverted V configuration. So if you do not care to much for having true horizontal polarization then they work as they should and built like a brick outhouse. Not to broad banded as to be expected for short boom length. Just depends...

Most QRP stations I have worked have put a lot of effort into there antenna systems. 95% of the station is antenna , the rest is in the shack, I usually try with 100 watts and the yagi but if I don't bust the pile up the amp gets turned on. Then again I do use a pair of 4x1 on 75 meters to cut...

http://www.dx-antennas.com/Height%20versus%20take%20off%20angle.htm some pictures to look at for the height vs take off angle/

if vswr ia 1.5:1 trying to get it lower will make no difference on the receive end. The A99 clone may just be the best you get on 11 meter freq for vswr. I wouldn't sweat it, just get on the air and make some contacts and yes it may be CMC, install your A99 copy using a top stick of chain link...

Darklife it happens. All part of the wonderful hobby. I was building an 15 meter vertical, my 12 year old son in the shack checking vswr. No matter where I adjusted the antenna my son said I had a 1:1 match. After about 30 minutes of scratching my head and thinking I might have found the...

http://www.hamuniverse.com/wb2vuo2elyagi.html http://www.w9dup.org/technet_files/direct_feed_yagis.pdf

thanks for the clarification of Y vs V. if you isolate the driven elements similar to the old PDL2 type of antennas. you can direct feed them and adjust spacing from the reflector to get a decent impedance.

Nice blog thanks for sharing.

Y quad is basically two delta loops if I am not mistaken. 2:1 balun or use 1/4 wl 75 ohm coax to make a matching transformer.

https://www.mouser.com/technical-resources/conversion-calculators/resistor-color-code-calculator?gclid=EAIaIQobChMI_Jus44K86gIVhcDACh09vA9MEAAYASAAEgJ6ZPD_BwE color code calculator. whatever your radio is dead keying adjust the jb12 to dead key the same amount, let it swing forward, they ARE...

ground rods are good and you may also try burying some wire in a circle around your tower, more contact to the earth may help.

mfj line isolator or wind an rf choke 5 1/4 turns of coax 4" inside diameter and place at the feed point. should stop the CMC coming down the coax and give you an actual reading of VSWR. Much information on grounding here on the forum and online. DC grounding and RF grounding. I am sure the...

Mike you get all the good rare DX in the south Pacific. I did make Cook islands and Papa New Guinea, But that was on 20 meters. with a three element yagi and full legal limit.

World wide World wide BUTTFUZZ,,love the wires my friend(y)(y)

AS BJ posted many alternatives. I have an imax 2K. I do not think I have used it in over a year. They do work 10 thru 15 meters no tuner required. I never tried it on 17 meters. To have an inexpensive vertical multi band on the antenna farm the Imax 2K is "OK". But an all band doublet will...

did the same thing using 1/2 EMT conduit and YES tuned in at 98 inches, ( glad to see I was not incorrect as I started of at 102") I used rg6 quad as coax and wound rf choke at bottom antenna, fed coax through bottom element and split it at feed point. My vertical dipole is suspended in the air...

Hey homer, I operated MARS from USS Dwight D Eisenhower aircraft carrier. I made friends with the radiomen in the comm center. I had 5 acres of steel flight deck for a ground plane, floating in the middle of a salt water puddle somewhere on other side of the world. Sateside MARS operators were...

http://www.dx-antennas.com/Height%20versus%20take%20off%20angle.htm good reading here. Note difference between polarizations vs height also.

https://www.w8ji.com/vhf_stability.htm

In the 80's I had Gordon Wests set of cassette tapes to listen to on the way to and from work. Cecil Field Florida, lived one hour south, so listened to Gordon 2 hours a day five days a week. Some where along SR21 is the set of Gordon's cassette tapes, threw the damn things out the window and...