Hello. I measured the maximum and minimum band noise of my 1ft dmr loop standing on a window sill. I am living near a HV power line and the attenuation of the...
Hello. I studied the theory and experiments collected by Chavdar LZ1AQ carefuly. Chavdar concluded, that for a loop with diameter smaller tham 1m, the loading...
I know that for a mag loop, resistive losses are huge. Ideally, a single section of soft copper tubing or soldered joints are preferred. That being said, has...
2.5-15KV BUTTERFLY CAPACITOR KITS for sale http://www.flickr.com/photos/93005502@N08/page3/ www.youtube.com/watch?v=dmZxgmalP9g 3" OD ROTOR 4" OD ROTOR 5" OD...
Hi folks - new to the group! I'm thinking of building the varactor tuned loop from Christ Trask's paper "A Simple Varactor-Tuned Loop Antenna Matching Network"...
I have just put up (Temp) my MFJ Hi Q Loop antenna at 6m above the ground mounted Horizontally polarised. I am having great RX/TX with this Antenna. I intend...
I am trying to find out what the optimal load impedance for a small untuned loop or dipole is, but I could not find a definitive answer so far. A simple...
Over the holidays, I took a great deal of time to investigate some ideas that I had with regard to the design of lossless feedback amplifiers in an effort to...
Hi all, this is the group where all the loop gurus lurk, so I think this is the best place where to ask suggestions about this simple schematic of a...
Hi to members of this group. I know it's a bit off topic but it is related to antenna and preamp circuits. I own several ferrite rings that I could use to...
I would like to build a small wideband loop antenna with an internal amplifier. I was wondering if anyone in the USA sells either a kit or a prebuilt high...
Thanks for letting me into the group. I wonder if anyone has measured the input Z to a 1 metre magnetic loop on 7mhz. My measurments show it to be around 15...
If anyone is interest in a MW Band 8" FSL, as described below, which I am asking $300 + shipping for, Then please contacted off list at _everettsharp@..._...
Hi everybody, A little OT but here we go: I think I have Radio Milne Bay on 3365kHz in my headphones tonight. I have watched the PNG frequencies every evening...
Hello everybody. My name is Ricardo. After almost 30 years away from electronics I returned to this hobby. I am a ham radio and also I like DX and SWL. I ended...
Evening Jim I just got a shot of your W5VYY & Edington Loop signal comparison. the blue line shows the signal peaks the yellow was the instant I took the snap...
Some recent discussions about active monopole antennas gave me an incentive to polish off some ideas I had to further advance the state of the art, which...
I am about to build a magnetic loop with soft copper coil and dual stracor capacitor for the secondary loop. I plan to work 7 - 30 mhz qrp with a Yaesu FT...
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. ...
