Dear TowerTalkers Your Excellency W8JI All those that I cheated out of the dBs! (Those with heart condition, please don't take it too seriously :-) First I would like to thank to all those who made a
What a wakeup! Funny thing happened last night. We went to Graduation Ball for my wife's niece. We had good time, met many old friends, had few adult beverages. Then went to bed. My brain functions i
There was a recent bunch of postings on Contesting reflector about humongous antennas. Here is one describing another "crazy Yuri" case of "useless" Quads. "A friend of mine, Yuri UA9CI once had a sy
You can dreaming, while I am working :-) You still don't getit? The Razors were developed, tested and compared to commercial Yagis on 2m antenna test range, which is much better, more controlled envi
your That I agree on your point about the software, it is wonderfull tool, but has to be used wisely and results checked out, especially in the "weird" configurations and close to ground. I am just i
(Lets change the silly subject line, let me worry about manufacturers :-) True in some cases (mostly horizontal antennas?), but don't forget that: 1. We use antennas in the real environment and there
Received from Art, KB9MZ, which he doesn't mind to share with the group: I, like Joe W1JR are getting a lot of enquires on what is the "best' antenna regarding the recent posts and I am sure you get
Talking about radials. Has anyone done some real life tests and comparison between few radials (2,4,8) and many (60, 120) when over salt water or marsh (or soaked salty beach)? The point of question
Hi Al, briefly, main reasons are: 1. Salt water "ground" provides low loss return in the immediate vicinity of the (vertical) antenna, which reduces losses in the ground, efficiency is better especia
Thanks for the info Paul, I suspect that in all mentioned cases you are talking about radials on the ground. Your experiences confirm what would be expected (surprise). Was any comparison done with e
The best one yet!!! That should throw the curve at the lawyers! Fine print should say: At the tips of elements. Yuri exposed to extreme RF and still around to tell about it "Welcome to RF Fields" --
.... snippydyduda Thanks for elaborate answer Tom, I know all that. I haven't seen the figures answering my question. I can interpolate and guess too and have EZNEZ to "design" antennas on the paper.
K8CFU et al. found experimentally that folded unipole gave them "surprisingly higher signal levels than expected and than simple radiator." Using folded unipole you get wider bandwidth and by playing
Hi Dan, if you are building your 4 square on land, please read W8JI post on "Radials over salt water" just few hours back. If you want top performance, good F/B, high efficiency and going to use towe
It depends.... There are situation where F/B, F/S is not that important and max gain is desired. I.e. for contester to have maximum signal and some splashback side might be welcome, to keep the QRM/c
the The only thing that seems to help shielding from "precipitation static" is the higher antenna or structure (umbrella effect). I.e. in stacked beams situation, the top beam would have s9+20 noise,
... It appears that two different antennas were compared, with different radiation patterns. One quarter wave (monopole) vs. top loaded folded vertical that was resonant around 2.4 MHz. Folded vertic
By using series capacitor you are basically matching (longer) radiator to your feedline, but the longer radiator has different radiation pattern - more compressed to horizon and narrower lobe(s) - di
I drive my ground rods with piece of pipe slid over the ground rod to prevent it from buckling, get up on the folding ladder and hammer the heck out of the ground rod. Then cut the muchroomed end, co
It would be nice to have a formula and calculate the precise load and match the rotator to antenna system, and sleep well knowing they would last forever. Just as we can't calculate the "eternal" tow