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Peter, Oh geez, of course you're right, I put up three antennas that day and had to move them around. I'm thinking of what started as on inverted L and ended up being a rather lazy endfed. No

If done properly, yes. The radiating portion should be in the clear well away from other conductors and also common-mode choked at an appropriate point. If either is not done there are problems. There

Well, it is if it’s designed that way. There’s a whole bunch of half wave dipoles where the outer side of the feedline is half the dipole, and the center conductor is the other half. “Sleeve

It should be mentioned that using your coax as the counterpoise is not best practice. 73 -Jim NU0C "Barry K3EUI" <k3euibarry@...> wrote:

I use the MyAntenna 10-75-2Kw in an inverted L, 50ft LMR-400, 30ft rise, then 100ft horizontal at about 30ft. Works great. 73, Brian W1BKW

*I've had a? MyANTENNA? 130 ft? end fed ? 1/2 wave? with?? 49:1 UNUN? up for one week and it works but is very "touchy" to tune up around 3580 kHz* *I took it down, added wire, and set up a

What is a premium core? An inverted-L typically has a impedance <50 ohms and a endfed halfwave is high impedance, so neither a 1:9 nor a 1:4 transformer could be right. 73 Peter, DJ7WW

I've used them before - great company. In my application and if I remember the part number correctly it was the BWDS1.5-80 with the stainless steel wire. I had that installed as a backup to a CMV-604

I just substituted a 9:1 Palomar Engineering UNUN with 100 ftRG213 (counterpoise) and changed the wire length to 155 ft in a large horizontal loop (around my back yard). Everything looks better than

https://x-tenna.com/shop Just received it, no on-air results yet, but the build quality seems excellent. Hint: If you want to add more/different counterpoises or radiators without soldering you will

Preferably look at the Smith. The phase jump is only a graphical effect of the fact that the phase passes beyond 180° then below. On the Smith the curve will be continuous. -- F1AMM Fran?ois

It’s like something make a second resonant point but not a real resonant point as other graphs don’t show it. Did you try to make the same mesurement without the tuner ?

Did you build, or purchase? if the latter, where did you get it? Thanks for the information.

Hello Dennis & Tim! Thanks for the reply and ideeas. From what you said, it seems that I have no other solutions but to try several versions of firmware swapped with various USB-C <> USB-A cables

In my modeling of an EF wire, be they 1/2-wavelength or not, a 9:1 is far more in order than a 49:1 or even higher ratios. Reason is for any "reasonable" and amateur typical heights above soil

Barry, The phase is just wrapping around 180 degrees.? Not to worry. Jay KM4EP

* * *Here is my? "MODIFIED"? 155 FT END-FED? wire WITH?? 9:1?? UNUN (Palomar Engineering) ? and? T-network? CLC tuner in shack* *Lowest? SWR? set to around 7100 kHz? with a RETURN LOSS?

If one had a lossless transformer for an End Fed Halfwave EFHW one would expect low SWR on the harmonic multiples of the fundamental frequency, such as 80 40 20 and 10 meters. I attribute the low SWR

I would suggest looking into the SAA-2N, I got mine from R&L. The type N connectors, cables and calibration standards appear robust and work well. The steel case is a plus. 73, Don N2VGU

I have an end-fed antenna with switch-selectable 49, 56 and 64:1 ratios. It's covered with heat shrink so I haven't looked inside. Checks out OK with VNA. 73, Don N2VGU