[SECC] Elavated radials
Neal Sulmeyer
Neal at K4EA.NET
Mon Feb 15 23:20:20 EST 2021
I have had excellent results with elevated radials. The more radials you have, the less critical the lengths. I have compromised at 8. The lower the frequency the higher should be the radials (this will probably sacrifice vertical wire height). On 40, I have 4 radials @ 6ft, 60M 8@ 10ft, 80M 8 @ 12ft. I'm currently waiting on wireman for wire to finish up the 160 'T'. Radial height will be 14ft. I plan on 8 full size radials and 8 half size.
I also experimented with "Chicken wire" on the ground out to about 10' from the antenna base. Basically, I took 3 20' lengths in a crossed pattern. Honestly, I not sure if this is worth the effort.
All the radials should be tied to a bus and then down to the ground and several short ground rods. I use the heavy copper pipe from Home Depot cut to 4' lengths.
Be sure to use a current choke at the feed point. I use a tapped coil to match to the feedline.
All my verticals are several wavelengths from one another.
I have tried phased verticals with elevated radials. This is MUCH more complex. I think radials on the ground are a much better option as long as you are prepared to have lots of them!
On Sun, 02/07/2021 03:48 PM, Dave Thompson <thompson at mindspring.com> wrote:
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Bill,
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Elevated radials get mixed reviews. John ON4UN (SK) used them with his 4 square antennas and I had a MULTEE with 4 revealed radials made from the Spi-ro 50 foot radials with good luck helping me to 167 DXCC entities on 160 SSB. Best DX was a UA0 in zone 25 across from JA. I also have worked Japan on CW just wish they allowed SSB on 160. Working DX on a one haft acre lot is possible but requires thing beyong the box.
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Hope to be back on the air soon. I have a Spi-ro 100 foot dipole I hope to put up at 65 feet as a dipole L. My original version let me work PY3CEJ in South Brazil and a 5N0 easily through a big pile ups. I got the only 5-9 from the 5N0 and only 20 over 9 from PY3CEJ. I have the QSLs to prove this.
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Good luck es 73
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Dave K4JRB
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