Re: Topband: loops and half square antennas

2015-07-01 Thread KL7RA
Hi mike, always fun to work you from Alaska as you slide by. Does the new antenna have a 1950's toilet bowl float on top? I assume the new plastic ones don't work as well but who am I to judge what others think works or not. I'm a stuck in the mud 1/4 wave vertical kid of guy for topband. Working

Re: Topband: loops and half square antennas

2015-07-01 Thread Mike Waters
Since I never had a low horizontal loop on 160 meters, I never did A/B tests. I just did extensive research (long story, I don't have time to explain). What I had in mind was that if people who sing the praises of horizontal loops --especially for 160m over ~500 miles-- did so, they might learn s

Re: Topband: loops and half square antennas

2015-07-01 Thread w7dra
Boy Tom, W8JI really hit the nail on the head, the antenna that works the best for you is the one you like. I finally after years of inverted Ls and other esoteric vertical mishaps I now have the antenna of my dreams - the one I have wished for since I was 14 - found on page 343, Fig. 14-26B of t

Re: Topband: loops and half square antennas

2015-07-01 Thread Tom W8JI
Good afternoon to all, First I have never understood this fascination with loop antennas... full wave or not. Unless they are put up vertically and even then they have to be feed at the correct spot (thanks for the education all those years ago Frank W3LPL) they just don't work DX very well.. i

Re: Topband: loops and half square antennas

2015-07-01 Thread Robert Harmon
Mike, Interesting. Would you tell us how you conducted the A/B comparison tests. We hear a lot of conjecture like you said how "well' they work and how "quiet" they are. Please give us the facts on the test antennas and how the A/B tests were conducted and the data from the tests. This might b

Re: Topband: loops and half square antennas

2015-07-01 Thread Mike Waters
Well said, Jim. Over the years, I have heard countless hams on HF testify how "well" they work, and how "quiet" they are. I was almost convinced. When we first moved to this rural acreage, myself and another ham went back in the pasture with a 100' tape deciding where we might put one. We decided

Topband: Low Power TX radio 1980

2015-07-01 Thread k3ky
My best guess, based on what little information you have given here, is that the radio contains a *Seiler* Oscillator. I've not run across any reference to a "Sillner" oscillator prior to yours. The Seiler is a variation on the basic Colpitts type. Unless you can provide additional info on your r

Topband: loops and half square antennas

2015-07-01 Thread Jim
Good afternoon to all, First I have never understood this fascination with loop antennas... full wave or not.  Unless they are put up vertically and even then they have to be feed at the correct spot (thanks for the education all those years ago Frank W3LPL) they just don't work DX very well..

Re: Topband: Low Loops, Tee's and ...‏

2015-07-01 Thread Rick Stealey
W8JI writes:good A-B test, so it really boils down to what makes us happy. If we are happy, it is like magic. It is as good as an extra 10 dB. This is true no matter how our antennas actually work. :) This may the most brilliant statement about antennas in the past 50 years. Rick K2XT

Re: Topband: Top Hat Vertical

2015-07-01 Thread Jim Brown
Hi Ed, The height of my Tee vertical was determined by the rigging points in trees to support the ends, with the design guideline that higher is better. :) The length of the top was then determined by what it took to get that 50 ohm match. 73, Jim K9YC On Wed,7/1/2015 2:35 AM, Ed Sawyer wro

Re: Topband: Top Hat Vertical

2015-07-01 Thread Ed Sawyer
“Same here. My T vertical for 160 is 100 ft vertical and 82 ft horizontal. That makes the antenna resonant below the band, with a feedpoint Z of 50 ohms plus some inductive reactance on 160M. I add series C to tune out the L. The same idea will certainly work on 80M.” I believe that this antenn