Re: [IRCA] DKAZ Construction Help Request

["Mark Durenberger" <Mark4@xxxxxxxxxxxxxxx>]

Hi Michael.  With the lengths you're talking about you can do a reversible 
D-Kaz even without the Vactrol.

Take a look at this:

http://www.durenberger.com/documents/D-KAZUPDATE052715.pdf

...and then holler with additional questions.

I have all three amplifiers; the Wellbrook FLG100 is likely the best; the DX 
Engineering works well at 15db gain; the Kiwas are 10db and they're also 
good.

Oh and the Vactrol really doesn't have much of a limit to feed-line length. 
The 100 feet you're talking about probably refers to the suggested length if 
you're directly remoting the null with a potentiometer.




Cheers!

Mark Durenberger mobile
-----Original Message----- 
From: michaeldyule@xxxxxxxxx
Sent: Saturday, May 07, 2016 6:02 PM
To: irca@xxxxxxxxxxxxxxxx
Subject: [IRCA] DKAZ Construction Help Request

I would like to install a couple of reversible DKAZ's (DKAZi?) and am 
wondering what you all think about extending the two ends towards the middle 
using CAT5 and attaching them to a 4PDT relay. I would have a Patented Colin 
Newell Vactrol and a balun at that point and run these back to the house, 
also using CAT5.

I thought that bringing the end points back the 70 feet to the middle would 
keep the Vactrol within the 100 foot length limit recommended to maximize 
null depth, but am a little concerned about any interaction with the antenna 
because they would be running more or less in parallel.

I am also wondering what you would recommend for a broadband amplifier - it 
seems that the options are Wellbrook, Kiwa, and DX Engineering. I wanted to 
use CAT5 instead of coax to keep feedline costs down if at all possible, and 
it's likely that the feedline length will be on the order of 250 feet. With 
a length like that would it be better to have the amp at the antenna or is 
it OK to have it in the house? What configuration are others using to do 
this?

I really appreciate any help you could offer. This is my first antenna 
project in many years!

Kind regards,

Michael Yule
Upper LaHave, NS


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Be sure to register now for the Joint DX Convention
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