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Paul is that 25 footer stainless steel? de KB9BVN Brian

Personally, I don't think an SWR of 1.4 will give you much problem, but you might consider using NanoVNASaver (free application) with your VNA to sweep the frequency from, say, 30 to 60 MHz and save

well I used the VF of 1 to calulate the VF of the Coax . The NVNA showed something like 2,4 m for the real lenth of 1.5m so that calulated a VF of 0.63 for the coax. Then I calculated 75/50,1x0,63 for

Asian and European components frequently have M10 threads, fortunately there are thread adapters available, like this one From Chelegance 2PCS CNtoU 3 / 8 - 24 M10 ANTENNA ADAPTORS (

You need to know what the real VF for the coax used. That and there is no such thing as a coax with VF=1. Having built that transformer I found with known 1/4 wavelength measured using VNA the

Hello Marin, I assume your goal is to achieve a better match between the antenna and the feed line. Perhaps you could use a single piece of 75Ω coax, cut to 1/4 Lambda, inserted between the antenna's

Mike. We are in violent agreement here. I have the MFJ 1898, essentially the same thing. I can't understand why so little has been written about it. Especially because it usually eliminates the need

Chameleon also has a 25’ extendable whip for $100. Also available at DX Engineering with free shipping due to price. Very well built. Sent: Tuesday, March 25, 2025 11:10 PM To: [email protected]

I am building a 6 m 2 el Yagi dK7ZB design and it is matched with a transformer made from 75 Ohm coax. 2 stubs of 1/4 Lambda in parallel. I tohought I could ?put a 28 Ohm resistor replacing the

Doug, I too am enjoying this thread. Do you have a reference for the HB vertical, how it is used/connected, or is it a QRPGuys design? I am always looking for antennas to play with, test and

My packable go-anywhere antenna is the Gabil GRA-7350TC (available on Amazon).? It is perhaps best-described as a small manual-screwdriver-type antenna with a removeable telescopic whip. When

On 3/24/25 I had a CW practice / rag chew session on 20 meters. I worked three stations: Date / Time Call Bnd Frequency Mode Power Rec Snt SPC# Name Comments Off 3/24/2025 19:25 AE4IX 20 14.054 CW 100

My preferred is the AT271 bungee cord whips they are 9.3FT (least mine are). The fold down to 16" and assemble very fast and strong.??They are avaiable from several sources, not all identical.?

Dave: I emailed you a file I found in my archives. 72, Craig WB3GCK <Djwilcox01@...> wrote:

Does anyone have the full instructions to the Black Widow vertical antenna that was designed and sold by Ed Breneiser WA3WSJ? So far the Wayback Machine only has snippets of it. Eds stuff has been

The Chameleon whips are built pretty well at the bottom. The early MFJ whips were quite fragile, but the later ones were much better. The Chameleons are still built better than the MFJ

I changed the subject to make this a bit easier to follow. I got the whip for 10-40 m operation ...............................It's even taller than Dan -)

I forgot to answer one question…since I’m 6’7 and almost always using the KH1 standing,the radial(s) are much more than a‘foot or two’ off the ground ?. Dan Presley 503-701-3871

?We can (and should) debate the relative merits of various antennas,but the bottom line is what compromises are you willing to accept? In my case being able to have very small and portable setup is

It is VERY similar, but MFJ sold a slightly weaker version that came from China.? The Chameleon SS17 is made in the U.S. and is slightly stronger.? There are minor differences in the dimensions.?