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Or how about, "You only need a 30' mast for your SGM in order to keep up with your neighbor's Imax & 40' mast" ...?

Makes me wonder if there's a way to mount the Imax upside down so the feed point is on TOP... :blink: Are you comparing antennas or mast height? If you compare a ½λ dipole to an end-fed ½λ and placed the two feed points equal, the one with the bottom end feed point would always have the...

I wish I still had my old set of Swan 600s & the MkII amp. I guess the TS-520S qualifies?

Nice, clean... inspirational. How do you turn it? I've just been dieing laughing... have you seen this: YouTube - Clarke and Dawe - The New Paradigm

You don't need a Yagi, direct-feed a 2 element Quad! The KB3TTP 10 Meter Quad - Build a Stronger 2 Element Quad Antenna Quad Antenna Calculator You can use ¼λ of RG-11 as a matching transformer and put the Quad in the square, it will only be 9'h x 9'w x 6' boom, IF you can get fiberglass...

As long as you don't need it to handle more that ~500w-1000w pep and can install it well above and away from all other objects, it should keep up with or outperform almost ANY vertical omni.

In figure 1, image B, it shows the second ¼λ per side in-phase with the first, how is that possible? I would expect it would cross over to the opposite phase.

OK, but you get a better idea of the real performance when you test it against stations who are also horizontally polarized, unless... Uhm, did you install it with the wire in the diagonal so you get both polarities or is the wire horizontal? If horizontal, you will get a truer idea of...

It seems rather odd this over-size antenna design would weather the test of time and still be in use if it didn't deliver considerably more gain & performance than a standard dipole. Well, according to the following it's not 5dBd but 5dBi (~3dBd) gain: N8ITF's Build Your Double Extended Zepp...

I believe an end-fed 5/8 is about 150Ω feed point impedance, so a center-fed 5/8 shouldn't be any higher, possibly even lower. I'll venture an inspired guess that a ¼λ piece of 75Ω RG-11 would transform it to dang near a 50Ω impedance and you'd see gain over the ½λ dipole. A double extended...

Yeah! - So how's the front to back & side rejection seem on that dinkus minimus? :confused1:

You bastage! ...now you've thrown down the gauntlet, I'm gonna have to get mine up on the mast and point it at you! :D

S-Units

You only need about a 2dB increase to clearly overtalk someone with whom you had been equal so yes, 3dB is an healthy gain, and more than a full S-unit on many a meter.

...well, you see, ...it was like this... Uh, I was standing outside his window? OK, so I'm a bonehead sometimes! :headbang I meant AMPLIFIER not radio... :redface: I don't see 30w pep getting him more than about 300 out of the 500. I had one which was recently stolen and I had to hit it with...

I'm in direct agreement with Jazzy George's posts, I believe the fair way of testing antennas is to erect them as high as the mast you can afford & guy allows, thus we see the performance of certain antennas such as the Starduster (M400) and AstroPlane (Top One) often suffer from being shorter...

The last TNT I heard was a little rough sounding on SSB (Class B) but with the radio off he sounded smooth. The Texas Star 350 was the first amp I've used that doesn't sound rough on SSB. (Class AB) If I were you I'd bite the bullet and just get a 667. If you're like just about everyone else...

...and I 2nd that! Just one thing I've discovered in testing these two SGMs... it needs to be in it's own space. It's a center-fed dipole and as such is a balanced antenna so it needs to be kept away from anything metallic or resonant which could upset the balanced pattern. Sirio isn't...

I think he grabs a torch with his right hand when he plops down on the chair.

Keep in mind you can drop, coil, and/or turn the ends if you don't have a long enough area for the full straight dipole.