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N1AUP

Joined: Sat, Apr 4th 1998, 00:00 Roles: N/A Moderates: N/A

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Topic Created Posts Views Last Activity
Why won't my ARRL designed vertical tune on 20? Aug 1st, 06:47 7 195 on 8/8/20
Vertical antenna using a wire as a radiator. What gauge? Jul 23rd, 08:17 3 159 on 24/7/20
Interesting Voices Discussion Net - DMR TAC316, Wed 10/2/2019. Sep 28th 2019, 05:02 2 989 on 2/10/19
DMR Discussion Net. 5/15/2019. May 6th 2019, 06:53 4 1,780 1 week, 4 days ago
Windom antenna. How to design the choke. Feb 14th 2019, 15:40 2 1,389 on 14/2/19
HDSDR is not working. Feb 15th 2018, 18:43 2 3,869 on 26/2/18
Windom for 80 - 10. Choke or not choke? Jan 25th 2018, 15:22 2 1,975 on 25/1/18
Support for wire antennas. Wire or rope? Jan 25th 2018, 06:19 3 2,081 on 25/1/18

Latest Posts

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Why won't my ARRL designed vertical tune on 20? N1AUP on 8/8/20
Quote by N1AUP
I have a Rig Expert 600 analyzer, I'll check out the link.

Thanks


Would it be useful to install a Palomar 6:1 balun on the antenna at the radiators, and feed it with 50 ohm coax to eliminate the feedline from the system?

I could then play around with the length of the radiators without worrying about the feedline effecting results.

https://palomar-engineers.com/antenna-products/baluns-and-ununs/1-8-30-mhz-balunsununs/hf-high-power-balunsununs/61-baluns/

Why won't my ARRL designed vertical tune on 20? N1AUP on 3/8/20
I have a Rig Expert 600 analyzer, I'll check out the link.

Thanks
Why won't my ARRL designed vertical tune on 20? N1AUP on 2/8/20
Your advice makes sense, considering that the feedline is actual radiator, but I did cut off about 20 feet, and it made no significant difference.
Why won't my ARRL designed vertical tune on 20? N1AUP on 1/8/20
I built a vertical antenna that was described in the 13th edition of the ARRL antenna book.

It's a 30 foot vertical element, and a 30 foot horizontal element, shaped like an L.

300 ohm twin lead feeds the antenna - one leg of the feedline feeds one element each. That then is connected to the balanced line inputs on an antenna tuner, that then connects to an SWR meter, and a radio. Tuner is a Dentron Supertuner with the balanced line jumper in place.

I built one of these in the early 80s, and had good luck with it. I got that design out of 73 Magazine. September 1979 issue. Pages 60 - 62.

https://archive.org/details/73-magazine-1979-09

The 73 antenna used 26 foot elements, while the ARRL design used 30 foot lengths. For this iteration, I used 30 feet wire lengths. 14 gauge stranded wire taped to a fiberglass mast. The feedline goes through the air about 8 feet from the ground, and travels down the side of the aluminum sided house, 1 foot from the side. It enters the house through a 4 inch PVC elbow.

My antenna will tune below 3:1 on 15, and 10. 20 won't get below 3.2:1, and it's similarly questionable on 40.

What did I do?

The ARRL article claims the antenna will work on 40 - 10.

Any input would be appreciated.

Thanks
Vertical antenna using a wire as a radiator. What gauge? N1AUP on 23/7/20
I'm building an antenna out of a 1985 ARRL antenna book. I am using a 30 foot fiberglass pole to support the vertical element.

What gauge wire should I use for the element? On one hand, I'd prefer to use a very light gauge wire to keep weight down, and minimize wind resistance as the wire is going to run on the outside of the fiberglass mast.

On the other hand, I have insulated, 14 gauge wire already on the shelf.

Finally, I can get reasonably priced copperweld 18 gauge from HRO.

Does it matter what I use?

Thanks

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