For the next couple of weeks, a test of a 160 meter Ben Edginton Quarter-Wave loop antenna will be underway. The frequency will be 1900 kHz LSB up until about...
I have just created an album in the photo section and posted a photo of a strange antenna at the Denver International Airport. I initially thought that this...
My QTH is located about 1/2 to 1 mile from all TV, most FM, all Public Safety Radio transmitters. In the other direction, I have 4 AMBC stations. In effect,...
Hi, Seasons greetings and a healthy 2013 to all members of the group. 72, Brian, GØNSL. Hi, Seasons greetings and a healthy 2013 to all members of the group. ...
Anyone have a 160m loop up? How high off the ground? How fed? How does it work? Any pro's, con's methods in using/building? Anyone model a 160m loop using 450...
I talked to a guy the other day that had a horizontal loop that was supported by two lengths of conduit making it 20" off the ground. With a kw input it ...
Hi, I am new to the group and have a question. i have a 145 foot loop that i use on 20 meters. My signal goes Nw to SE. today i put up a 20 meter vertical...
While searching for dual transistors that are suitable for use with the active negative inductor circuits I came up with, I came across some interesting...
Hallo folks, I hope, there are some "experts" in this group to answer me a fundamental question and help me understand how loops work. As protection against...
Has anyone figured out the math to an UglyBalun (UB), so we could optimize it for the bands we use it on? To me the UB coax appears to be 'short' a number of...
Everett, I did take a look at the file you downloaded in the files section. These are really beautifully made antennas, it is always a joy to see at a job...
Hi All, Just a quickie, to advise, those that may be interested in Magnetic Loops, that I've been playing with 3m diameter loop, as an intermediate step to...
Hey gang, One of the trees holding my 80 mtr horizontal loop came down (thanks to Sandy), so this weekend was spent workin on the ole antenna. I've always...
... me ... What bias voltage and current are you using? Looks like the solid line is signal current and the dashed line is phase. If you place a 5-ohm resistor...
Tonight I conducted a number of experiments comparing the two antennas. I tuned FCH-344 which has a reasonably strong and steady signal here, then first...
Hi All, The tunable LF loop that I put up a couple weeks ago seems to be affected a bit when thoroughly wet. Just possibly there may be some additional path...
Morning all, I am new to HF and have to struggle with Attic Antennas. I have a relatively large 86 foot horizontal loop in the attic and it tunes fairly well...
I want to make a magloop and put it up in a tree if i make it for 20m by using a halfwave length. do I need the tuning cap if I already have a tuner in use in...
OK, Today I wound the coil on the loop frame, installed the rotator and then had the neighbor help me get the entire thing up on the roof and installed on the...
Well, today I bought the PVC pipe for the tuned loop antenna. The plans were to make it an "X" (Actually a "+") with four 3 foot cross-arms, all joined in the...
Alex, Thanks again for the comments on your antenna sizes, erected the 10ft base version yesterday, 360° rotation with base 3ft agl, excellent results, many...
Hi All, I am contemplating erecting a rotateble Flag type antenna but some of the Internet sized versions assume you have a huge plot of land not a suburban UK...
I have few naked coils for half wave dipoles. I'd like to measure the coil characteristics to insure I use them properly and duplicate home-made replacement...
I removed both of the files related to active negative inductors from the group files section. A revised version of the one active file can now be found on my...
Hi all, I've continued to work on NIC (negative impedance converter) based amplifiers for small loops antennas. As well known a small loop has an impedance of...
Sorry to sound so dumb on wire strength but this question concerns a little of both I want to put up an 80 meter loop, using 18 GA speaker wire supported by...
