Look the difference between aluminum vs cooper. anyways the antenna is in the air and its woking really good, i like it. its not a broadband antenna, but its good. i need the top element and the beta match or the number 7
Take some readings before the Penetrator comes down, check them again after the I-10K goes up, and let us know what you found.Gearhead said:I love my super penetrator, but it's coming down this weekend, and a I-10K is going up in it's place....but 30 ft. higher
I hope you are not implying that Jay or Dan are signing on to Jo-Gunn's gain claims. There is no way Jay would ever do this and although I'm not one of Dan's biggest fans, he too has more integrity than that.davegrantsr said:those who believe that are lining up for coily & jay-made beams. jo-gunns school of gain lives on.
Yes, I agree! I have often said that a 5/8 is a 5/8 is a 5/8.davegrantsr said:the laws of physics, Einstein's theory of relativity & the Magna Carta ALL state that a piece of wire, c o p p e r or aluminum tube in freespace will do 'X'.
Ding ding ding......we agree!davegrantsr said:you can increase efficiency in a particular direction or plane, at various angles, or with different forms of feed.
Well, at least you admit that its your problem and not necessarily wrong.davegrantsr said:HOW MUCH of an increase in efficiency there is, is where I have the problem.
Bigger elements and longer booms may increase output, but when I talk about efficiency, I'm speaking of the ability to lessen the loss in the feedpoint. Some feedpoint designs have less loss than others. The more signal you get into the radiating elements the better!davegrantsr said:you can rewrite science when it comes to the planets, maybe, but, in this case, you can't rewrite it. when it comes to beams (yagi or quad), the only NOTICEABLE way to improve them, is make them bigger....to a point.
Not true. We have learned over the years that by just re-spacing the elements and lengthening the booms, we can increase performance considerably. Then there are better feedpoints as well as direct fed 50-ohm "Optimized Wideband Antenna" designs.davegrantsr said:as for Dan & Steve, OK, maybe I directed too much of my wrath on them.......a 3-4-5-6 element beam is a 3-4-5-6 element beam no matter who builds & designs it.
Ahh, you base your "problem" on the price tag. Quality materials cost money. Then there is what people are willing to pay for one's intellectual property (design). Is it worth it? Only you can decide for you, but that doesn't change the fact that some antennas are just better.davegrantsr said:while it may excel in 1 area, & be good in others, it CANNOT & WILL NOT be THAT MUCH SUPERIOR in EVERY SINGLE WAY to substantiate exorbitant prices.
Maybe not to you, but that depends on how you define, "performance difference". What about the guys who need an antenna that can survive high winds and/or power? What about the other guy who's looking for a direct fed antenna or the guy who occasionally runs 10K+ but doesn't want to suffer the loss of a 10K gamma at lower power levels?davegrantsr said:yea, it may well be built like a tank, but do you know how much a rotator costs that can spin a tank? the performance difference between it & a 3 element Maco will NEVER ever justify the price.
Have you ever seen the "build quality" of a Jo-Gunn? It uses wood screws to hold the elements in place. And to top it all off, they use a gamma match system! No thank you!davegrantsr said:Buy a Jo-Gunn for real life gain & its build quality.
What "astronomical gain & superiority claims"? While it's true that the I-10K works better and that preliminary tests show that the Crusader beam works better, I've never made any gain claims.davegrantsr said:Claim superior engineering that'll withstand Armageddon, I may buy that, claim design qualities that equal anything else ever built & I will probably buy that, but please do not continue to insult my intelligence with astronomical gain & superiority claims.
I agree that the Maco parts are an excellent platform to build antennas from. I picked up a 6-elelment Maco for this very reason. I also have a number of Mosely, HyGain, and KLM antennas. Roboldo peaked my interest with his conversion of the KT34A for 11-meters. I have a couple of thos here and am going to experiment with it and maybe even write up instructions on how to do it.davegrantsr said:i stand by the 3-4-5-6 element is a 3-4-5-6 element because, YES, you can optimize spacing & boom length to tailor performance to your specs-fwd gain, rejection, or a combination of both. you can do that with a 'laying around,old' maco m103.
Not with the stock parts, sorry.davegrantsr said:..if you don't mind buying a new boom, etc. any shmo who can read could BUILD one from scratch just by reading a set of maco's directions. and, build one like the proverbial tank.
Speaking for the I-10K, its worth EVERY PENNY! You get what you pay for! How many people have lost elements off of their Maco V58? They use thin wall aluminum (.049) and water can ingress into the base assembly causing problems. Sure it works, but the I-10K works better......mechanically and electrically, as you admitted to earlier.davegrantsr said:don't get me wrong, give me 1 of their beams or 5/8 waves & up it'll go. i never said they don't 'work'. just not $350 worth better.