[SixClub] vertical antenna(directanswer)

[six_club at comcast.net]

That is true, I am sorry I quoted from memory and that is getting old. L. B. Cebik, W4RNL in an issue of QST some time back, stated some 1296 gain measurements with rhombics the best actual gain measured was 20DB over a dipole.

You should be able to beat that at 6 meters as I believe the surface resistance 1296 mhz would be greater than at 6 meters. I could be wrong. Still it would be hard to obtain 20 db with beams.

Jerry W9FS
 -------------- Original message ----------------------
From: Steve Katz <stevek at jmr.com>
> You'll never achieve 30 dB gain with a six meter rhombic, no matter how
> large you make it.  It might be possible to achieve such high gain with a
> large array of stacked rhombics fed in phase, assuming the divider losses
> are very small.  The problem with a "30 dB gain" rhombic is that it needs to
> be 560 feet long (at 50.125 MHz) and the loss in wire that long counters the
> effect of any potential gain.  Without being able to rotate the system, it
> would be almost entirely useless because the front lobe, to achieve such
> high gain, will only be three degrees wide.   If you're not aimed precisely
> at the target, you'll miss it. -WB2WIK/6
>