Re: AX1 - Collapsible Whips
I use the mini shock corded whip from Buddipole. 122" with the stinger and only 12¡± collapsed. Nice and compact I take it with me everywhere even when I am doing stationary mobile.
By
Kelley KF7ZVL
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#8234
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Re: AX1 - Collapsible Whips
The DS1 has apparently been replaced by the CLV, which is now center loaded instead of base loaded.? The CLV is half the cost of the AX1 but requires quite a bit of user assembly.? It folds up
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Dave AB7E
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#8233
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Re: AX1 - Collapsible Whips
Yes, definitely.? I? modeled my attempt at an AX1 with 10 feet of the counterpoise about one foot off the ground, and 3 feet of it angled upward to the base of the whip at 4 feet off the ground.?
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Dave AB7E
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#8232
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Re: AX1 - Collapsible Whips
Back in December I ran a test of QRPGUYS DS1, similar to the AX1 and a QRPLABS U4B 27mW transmitter on WSPR. I ran the test for a complete 24 hour cycle. The antenna was mounted on a tripod about
By
John KK4ITX
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#8231
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Re: AX1 - Collapsible Whips
I know when I deploy my AX1/KX2 with an elevated radial or three...it seems to work a lot better than laying the radials on the ground.
When I can find something to drape them over.
de
By
Brian KB9BVN
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#8230
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Re: matching 6 m 2 element Yagi
Well, I think you understand more than you think, and certainly more about? antennas than the average ham.
A few years ago I made a 5 element DK7ZB antenna for 6 meters.? The version I made was
By
Dave AB7E
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#8229
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Re: AX1 - Collapsible Whips
The stainless steel used in extendable whip antennas is typically type 301 or 304, both of which have a relative permeability of 1.05 or less ... which means they are essentially non-magnetic and
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Dave AB7E
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#8228
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Re: matching 6 m 2 element Yagi
thanks Dave. In fact I rather don't know, what I am doing. I just did not want to get an antenna off the shelf and do something homebrew and the DK7ZB conzept looked easy. But hen on the first setup
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Martin DK 3 UW
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#8227
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PALM RADIO paddle & straight key SOLD
Groups,
I've sold my PALM RADIO straight key and paddle.
Thanks everyone for your interest and patience
73
Jay
W6CJ
By
Jay W6CJ
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#8226
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Re: AX1 - Collapsible Whips
It must be stainless steel because I have left it outside in the rain many times and there is no rust.
Paul
Sent: Wednesday, March 26, 2025 3:10 PM
To: [email protected]
Subject: Re: [qrparci]
By
Paul Quillen N4LCD
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#8225
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?? FS: PALM RADIO paddle & straight key
Groups,
I'm selling my Palm Radio paddle key and straight key.
Both are in good condition.
[image: Palm keys.1.jpg]
[image: Palm Keys.2.jpg]
[image: Palm Keys.3.jpg]
They were used on a few stealth
By
Jay W6CJ
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#8224
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Re: AX1 - Collapsible Whips
Paul is that 25 footer stainless steel?
de KB9BVN
Brian
By
Brian KB9BVN
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#8223
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Re: matching 6 m 2 element Yagi
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
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Dave AB7E
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#8222
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Re: matching 6 m 2 element Yagi
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
By
Martin DK 3 UW
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#8221
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Re: AX1
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 (
By
Don N2VGU
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#8220
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Re: matching 6 m 2 element Yagi
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
By
kb1gmx
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#8219
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Re: matching 6 m 2 element Yagi
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 75¦¸ coax, cut to 1/4 Lambda, inserted between the
By
Tom K4AKC
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#8218
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Re: AX1
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
By
Scott KA9P
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#8217
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Re: AX1 - Collapsible Whips
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:
By
Paul Quillen N4LCD
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#8216
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matching 6 m 2 element Yagi
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
By
Martin DK 3 UW
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#8215
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