We're not even talking a small reduction here. Heavily anodized aluminum's surface is really a pretty tough insulator. You can stick meter probe leads on it and read a real open. If you press hard e
Yep, bunch of bull. If you put a spring between your guys and the anchor, then they won't develop any more force to hold the tower up when the wind blows than when everything's quiet. Either you'll h
"So my simple question is "How are YOU feeding your 43ft vertical?"" Matching networks. Gets around all feedline loss issues: http://www.n3ox.net/projects/lowbandvert But I don't even use that one an
If you'd like a picture of what Terry is describing: http://www.iv3sbe.webfundis.net/html/UNUN.htm _______________________________________________ _______________________________________________ Towe
If you work it right, you should be able to get a good parallel vertical going that way. I've seen it done a few times with fairly long standoffs to the sides. It would be tough to do with wires wra
Semantics and expectations. I tried a 40 foot base loaded wire vertical on 160m and thought it was terrible because I could only just barely work DF2PY and S59A with 100W. I knew they were some of t
His tuner allowed him to tune on all bands...except maybe 160. A lot of tuners allow you to tune *the lack of antenna* or a *short circuit* up on many bands, too. Doesn't mean a tuner with no antenna
By the way, when I talk about the hard job, I am, of course, talking about an electrical job. A freestanding vertical has a hard job of standing up in bad weather to do ;-) I have no gripe or even a
That is, I believe, the balun that caused so much of a problem for the ham who posted on eHam. He's recently posted that rewiring it as a UNUN made 80m and 40m come thoroughly alive. Takes a couple
By the way, please do NOT read this as a condemnation of Array Solutions' baluns!!!! If anything, the balun looked very nice and solidly built from the pictures of the inside, and was built on a hef
Chokes are current baluns if installed at the antenna feedpoint ;-) Current balancing at a feedpoint is simply the prohibition of current on the third leg connected to the feedpoint node. If there a
"Another advantage to switching L networks is that it's fast. In a contest you don't want to wait for an antenna to adjust." Honestly, that's why I bothered with this: http://www.n3ox.net/projects/lo
Yeah, until you go to fire up in a DX pileup on 40m, and you see your SWR way out of whack and climbing, and you go out and have to clean out RF-fried earwig from your capacitor ... There are pros a
Scott, I have a small yard too and I do fine on 160/80 with 100W. My radials are #18 stranded bare wire and are laid out like this: http://n3ox.net/projects/flag/layout_lg.jpg _______________________
How would I know if it's distorted? Easy in azimuth with a rotatable antenna. 1843.2 kHz TTL can oscillator driving a six foot whip against a short ground spike stuck out along a riverbank about a w
I'm fond of that approach myself. It's what I use for quick antenna disconnects around here. _______________________________________________ _______________________________________________ TowerTalk
It's not only boxes. I built a resonant transformer arrangement to couple 4MHz ultrasound signals onto my rotating Ph.D. experiment: http://n3ox.net/files/us_ring.jpg The setup is essentially a pair
I think they're big fat cage dipole elements supported about halfway out each element by an insulator in the center of the element connected to those big tubes that run back to the structure. The ca
Hm, I'm changing my vote to that one ;-) Thanks for the link... I do agree with XE2K that a clamp above the rope couldn't hurt though ;-) Dan _______________________________________________ ________
Call me henpecked but the XYL will not let me put my LM354HD unless it goes Given your restrictions (which I will accept as a given, though I expect someone to come along any second and tell you to g