[TowerTalk] Tower and antenna decisions

[Mark Robinson]

I looked at the LPDA and wasn't impressed by the front to back ratio, so I 
installed an Optibeam OB11-5. I have been very happy with it.


Mark N1UK


----- Original Message ----- 
From: "Pete Smith N4ZR" <n4zr at contesting.com>
To: <towertalk at contesting.com>
Sent: Saturday, 26 October, 2013 2:19 PM
Subject: Re: [TowerTalk] Tower and antenna decisions


> My Yaesu Mark 5 would begin to roll back its power output over about 
> 1.8:1.  What really bugs me about LPDA's is the terrible tradeoff between 
> weight and size and gain/directivity at any given frequency.
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network at
> http://reversebeacon.net,
> blog at reversebeacon.blogspot.com.
> For spots, please go to your favorite
> ARC V6 or VE7CC DX cluster node.
>
> On 10/26/2013 1:56 PM, steve jobes wrote:
>> Rick I disagree with your statement. As a owner of a Tennadyne T-10 and 
>> currently a T-12 your statement is flat out wrong. I swept my T-12 with 
>> my rig expert AA-230 analyzer and it was below 2-1  across the 13-30 mhz. 
>> range. Not sure what you are talking about, OR WHAT BRAND. But to say 
>> mediocre SWR is a false statement.
>>
>> 73,
>> Steve W1DXH
>>
>>
>> -----Original Message-----
>> From: Richard (Rick) Karlquist <richard at karlquist.com>
>> To: towertalk <towertalk at contesting.com>
>> Sent: Fri, Oct 25, 2013 7:25 pm
>> Subject: Re: [TowerTalk] Tower and antenna decisions
>>
>>
>>
>> I briefly looked at log periodics and one thing
>> that hasn't been discussed here is the mediocre
>> SWR of LPDA's.  You're pretty much going to have
>> to use a tuner, and you also have increased feedline
>> loss.  Might work for some users, but I'm sticking
>> with my SteppIR antennas (3 of them so far).
>>
>> An LPDA would however, make a good broadband receive
>> antenna for a skimmer, if you want to optimize
>> one direction.
>>
>> Rick N6RK
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