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Thanks Guy, I know your and Walt's ambitions for AM-DX, your solution is already very perfect. I can see that the size (one meter up or down) will be a very good option, also the self-supporting

The J-310 would be a much better choice. Dave - W?LEV [email protected]> wrote: -- *Dave - W?LEV*

Hi Christoph, I use 16m (50ft) circumference (W=20ft, top H=15ft, bottom H=4ft) .? I decided on this size for 9dB or 10dB noise over-ride from the antenna on 160m. using only 4 x 3.5m elevated

Most interesting!

With todays knowledge, the usage of a MOSFETs in the front stage of an active e-field impedance converter is not really a good idea. Even if some professional active-monopoles like the Eastern German

Hi Hisami, The circuit and principles shown in the article are valid, but the reasoning behind them is now somewhat dated. The use of a power FET for this purpose was "state of the Art" at the time

Hi Vojtech, Thanks for the reply. "neutralisation" is a nostalgic word. I hadn't been aware for years. It filled few pieces of the puzzle. Thanks also for the explanation of the traps. I tried to

I try to

Guy Atkins <dx@...> added the photo album Azi-Loop Self-Supporting Structure for Transportable / DXpedition Use ( /g/loopantennas/album?id=301249 ) : My in-progress design

Hi Christoph, The image you uploaded from Dave's excellent presentation actually shows a circumference of 13.8m; close, but not quite the 15m you mentioned. I currently have an Azi-Loop in the

Hi All, I found an interesting site, there a archive of the defunct "ham radio" magazine. https://www.worldradiohistory.com/Archive-DX/Ham%20Radio/ I have been reading this article intensively for

Christoph Ratzer <ratzer@...> added the photo album AziLoop Loop Dimension 2025 ( /g/loopantennas/album?id=301232 ) : In the presentation Dave showed a circumference of 15

Hello from Austria, I am an enthusiastic mediumwave BC-DXer and operate a small remote station outside Salzburg, which I have built up over the last 14 years. (https://remotedx.wordpress.com/ As I

Addendum: I am more inclined to trust IN3OTD's data because there isn't much opportunity to screw up a S21 measurement on a VNA. However, the Cedola et al's time domain measurement (OCVD) has more

I have a problem reconciling the measurements of Cedola et al and IN3OTD. I plotted IN3OTD's Fig. 1 data on a graph comparing 3 different types of *real* PIN diodes (below). ?IN3OTD's data are the

If anyone needs mounting nuts for ARCO and other brands of "padder" or "trimmer" capacitors, I have some that are surplus to my needs.? These are almost unobtainium.... VERY hard to find. They are

This subject was extensively covered and commented on a few months ago. I'd suggest you check the archives. Personally, I don't want to tune the loop every time I chase something else. They are

I have made several similar loops for BCB and NDB work. I wind the loop to about 330uH and use a BB112 Variactor to? resonate it, fed from a 0-10V Bias-Tee (indoors) . Very sharp / hi-Q and nothing

I like tuned loop antennas for AM BCB as well as for NDB chasing. I have a 45 inch on a side box 8 turn loop wound with #12 magnet wire and also use it as a crystal radio set. A good tuning capacitor

If anyone is interested in a loop amp, or a phaser, please contact me off list. everettsharp (@) aol.com ?Everett N4CY