Could not a half wave L be considered essentially equivalent to half of a half square antenna, fed at the high impedence point near the ground? I had a half square up for 80M - it worked fairly well
Jim and the list. This is a topic near and dear to me. I live in a house surrounded by forest - mostly oak, poplar and maple with a couple pines scattered about. I have a 90 foot tower, the top of wh
While we're on the subject of Bobtails - I've been considering a design that is slightly different than what you normally see. What if one were to use a cylindrical tube for the center element, and r
I built the same gun - after many frustrating episodes trying to make the slingshot work. The spudgun is a dream. I built it by scrounging parts myself, which turned out to be a challenge to get all
Herb: What do you mean "sweet point?" This has always been a mystery to me. I have a 90' tower with a TH-& etc on top that I am getting ready to feed. I have heard "feed it at the top (just under the
George and others that have responded: Thanks. George provided the guidance I was looking for. I am still confused though with the references I have seen to a 'shunt fed tower' where the rod goes all
It is possible to feed a beverage in the center. See Micek's book. If you google "beverage antenna center fed" you will get a couple links that will give you info on this approach. I believe the two
Quick question. I have 500 feet of wire. I'm going to install raised radials on my 90 foot (Gamma fed) tower. Is it better to install three 1/4 wave radials, or four 125 foot radials? Or does it matt
I have received 13 replies, on or off list, and would like to thank all for the quick replies. Many suggested going with 125' long radials, getting four of them out of the 500' roll of wire. There wa
I've been reading, and still haven't come up with an answer to the following question: With radials laid on the ground, does it make any difference if they are insulated (THHN) or bare? I suspect not
I'm not familiar with north/south propogation on topband. What are the best times for working South Orkney from the east coast US? Thanks, Wayne N1WR _______________________________________________ U
Brian: Contest operating is a great way to improve your code speed. You can listen to the station make multiple contacts and pick out the exchange - then call him. You will know what he will send, an
for an almost perfect diode mixer. Chased after this on one of my antennas for months. Wayne N1WR _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
Interesting stuff. Here's a story. Back in the mid 70's I was an engineer for the FAA up in the New England Region. At the time we were working on improving ground systems on our radars. I was with a
Maybe a bit off topic, but I'm hoping someone can give me some insight. I use my 90' tower as a vertical on topband. It's base is grounded, and I feed it with a gamma match. Works great. OK so far. I
Thanks to all that have responded. My concerns have been lessened and I appreciate that. My tower is 200 feet from the house. I already have 7/8" hardline run up the tower (Rohn 25, run outisde). I'm
I use 1/2" 75 ohm hardline for shunt feed on my tower. plenty of it around, shield is aluminum protected from the elements. Seems to work just fine. Wayne N1WR _______________________________________