Do you recall the Gotham beams? They produced full size yagis.
I had a 20 meter 3 el on a 24 foot boom. I added 4 feet to the original 20
foot boom.
As a kid this was my first experience with antennas vibrating in a calm
wind. It began shaking the coupling bolt out of the tower between the
sections. Element end inserts cured that.
Most antennas today are down sized like transceivers and zero lot lines. I
can remember the SX28 and R390A which carried 6 mechanical filter. They all
had a unique personality. Touching the tuning knob was like holding on to a
sport car steering wheel.
WA5MUE
----- Original Message -----
From: "Jim Lux" <jimlux@earthlink.net>
To: <towertalk@contesting.com>
Sent: Saturday, May 14, 2011 8:48 AM
Subject: Re: [TowerTalk] Vertical with 1 radia
> On 5/13/11 3:32 PM, Rich NU6T wrote:
>> If I understand the stories I read, all the most effective antennas were
>> designed and built in the late 1950's and early 1960's. Later antennas
>> just can't compare<grin>.
>>
>> Rich
>> NU6T
>> (Ham since the decline of SS 23).
>>
>
> Yes.. right from the peak of cycle 19, and just before numerical
> modeling and antenna analysis got to the point where you could prove
> that a particular design was bad.<grin>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|