[NLRS] Anyone using Quads?

[Dr. Gerald N. Johnson, electrical engineer]

Duane Grotophorst wrote:
> 
<snip>
> This particular company has always been notorious for
> their optimistic gain claims. The antennas themselves
> generally aren't bad, and are usually comparable for a
> given boom length, just don't believe the advertised
> gain figures. I have never seen any antenna design
> achieve dramatically higher gain for a given boom
> length than any other design using the same boom
> length. So when I see some of these high gain claims
> for short booms I simply don't believe them.
> 
> Duane
> N9DG
> EN53bj
> 

Actually the 11 element CC has gain lower than other beams of the same
length. Something like 5 dB lower than the original claims. Its possible
to increase the gain more than 2 dB on the same boom by changing it to 8
elements with new spacings and element lengths. I took an original to a
CSVHF conference once, long ago. It was the object of much derisive
laughter, though the second one with a modified feed had a couple more
dB gain.

At the CSVHF antenna contest, the CC 11 element was almost as good
comedy relief as the flattened quads of more recent times.

73, Jerry, K0CQ
-- 
Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
Reproduction by permission only.