[TowerTalk] Log Periodic Choice

Roger (K8RI) K8RI-on-TowerTalk at tm.net
Thu Sep 11 23:38:40 EDT 2008


WA6RKN wrote:
> All this talk of Log Periodics.....I have a simple L.P. for 2 
> meter/440....works quite well..
>
> But..on 10, 12, 15, 17, 20 meters, etc........
>
> What advantage (or disadvantage) is there to a Log Periodic when compared to 
> a Yagi?
>   

Band width is great, gain is less than a monobander, and you can get a 
wide range of bands on one antenna without traps.

73

Roger (K8RI)
> Joe Wolfe
> WA6
> rkn
>
> ----- Original Message ----- 
> From: "W5CPT" <w5cpt at bellsouth.net>
> Subject: Re: [TowerTalk] Log Periodic Choice
>
>
>   
>> Theoretically all the elements interact somewhat at all frequencies. 
>> However the effect of the smaller elements on the lower frequencies and 
>> the inverse of that, being the largest elements on the higher frequencies 
>> is minimal.
>>
>> My T-6, 6 elements on a 12 foot boom compares favorably with a Tri-bander 
>> with an equal boom length.  What I lose in not having 3 full dedicated 
>> elements tuned to the band of interest, I make up in no trap loss.  And I 
>> get gain in all 5 bands where the closest you can come to that is unity on 
>> the WARC bands similar to a dipole.
>>
>>     
>
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