[SixClub] 50 mhz 5 el For Sale - modified Cushcraft Boomer

[Roger (K8RI)]

All antennas are compromises and  usually a bunch of them. Gain comes at 
the expense of signals off the desired axis. IOW a vertical can have 
omnidirectional gain in the horizontal pattern by taking power from the 
higher angle radiation and putting it out at a lower angle.  The more 
gain you get the narrower the beam width which is usually measured at 
the 3 db points.

The antenna in the linked article sacrifices band width for gain while 
maintaining a reasonable f/b ratio.
For absolute maximum gain you sacrifice both bandwidth and even f/b.
On six I only operate in the bottom couple hundred KHz so bandwidth is 
not a problem and f/b is of little consequence. If an antenna is 
optimized only for maximum gain it's likely to be long with a narrow 
band width and a lesser f/b. So I want the biggest, baddest, highest 
antenna I can put up. Unfortunately like most of us I'm limited (in 
order of importance from major to almost insignificant)  by budget, set 
back rules, wife, and maybe neighborhood relations.   On 40 meters, "to 
me" f/b is *almost* as important as gain. I can't work DX off the front 
if I'm hearing half the US off the back. Unfortunately even a double 
size rural subdivision lot limits me as to size...even if I had the 
budget. 4 or 5 elements of 40 is *big!* and expensive. OTOH it's nothing 
compared to a 4L on 75. <:-)) Any one remember the 4L for 75 with a 
photo of the guy walking along the *inside* of the boom?

73

Roger (K8RI)

Richard J. Fiero II W5TFW wrote:
> OH BOY !
>
>   he cut a 6 element cushcraft DOWN !
>
>
>   It's funny how so many different people have so MANY different opinions 
> about how an antenna should be built......
>
>  Thats the 1st time I have heard of anyone cutting one down !  usually they 
> ADD length to the boom to spread the distances from the elements.
>
>  Such,........... is Life.
>
>                                                                              
>                    Joey
>
>
>
>                                                       A.R.S. W5TFW
>                                                       Richard J. Fiero II
>
>                                                       www.6mt.com
>                                                       www.w5tfw.com
>
>  LIFE'S   TOUGH !
>
>  It's even tougher, if you are STUPID !
>
>                                           John Wayne
> ----- Original Message ----- 
> From: "kd4e" <doc at kd4e.com>
> To: "World Wide Six Meter Club" <sixclub at mailman.qth.net>
> Sent: Thursday, April 22, 2010 1:18 PM
> Subject: [SixClub] 50 mhz 5 el For Sale - modified Cushcraft Boomer
>
>
>   
>> http://swap.qth.com
>>
>> -------------------------------------------------------
>> 50 mhz 5 el For Sale
>>     I have a 5 el on a 21 foot boom for sale.. In very good
>> condition.. This antenna was once the Cushcraft Boomer 6
>> element.. The boom was to long and I shortened it to
>> computer specs from the W3CCX Web Site. The antenna works
>> very well but was replaced by 4 x 6 el at our WA2FGK contest
>> location. Located in NE Pa.. I would like $150.00 or best offer
>> Listing #820490 - Submitted on 04/22/10 by Callsign K2LNS
>> -------------------------------------------------------------
>>
>> -- 
>>
>> .Thanks! & 73, doc, KD4E
>> .Have an http://ultrafidian.com day!
>> .
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