N1AUP
| Joined: | Sat, Apr 4th 1998, 00:00 | Roles: | N/A | Moderates: | N/A |
Latest Topics
| 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
| Topic | Author | Posted On |
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| Why won't my ARRL designed vertical tune on 20? | N1AUP | on 8/8/20 |
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/ |
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| 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 |
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| 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 |
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| 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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