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Re: [TowerTalk] How does the DX engineering 4Sq phasing box compare?

To: <k3lr@k3lr.com>
Subject: Re: [TowerTalk] How does the DX engineering 4Sq phasing box compare?
From: "Mark Robinson" <markrob@mindspring.com>
Date: Thu, 5 Jul 2007 17:09:13 -0400
List-post: <mailto:towertalk@contesting.com>
Yes I was getting confused. I was thinking of the Array Solutions 4 Square 
tx controller compared to the Comtek box


http://www.arraysolutions.com/Products/foursquare.htm



Mark N1UK G3ZZM


----- Original Message ----- 
From: "Tim Duffy K3LR" <k3lr@k3lr.com>
To: "Mark Robinson" <markrob@mindspring.com>
Cc: <TowerTalk@contesting.com>; <richard@karlquist.com>
Sent: Thursday, 05 July, 2007 4:56 PM
Subject: Re: [TowerTalk] How does the DX engineering 4Sq phasing box 
compare?


>I think there is some confusion going on here.
> There are two versions of DX Engineering boxes that I am aware of.
>
> The 1st was a copy of the Comtek box. Built by the former DX Engineering 
> company
> in Oregon (not to be confused with the even older DX Engineering company 
> that
> built RF speech processors for Drake and Collins gear) This Comtek clone 
> can be
> used for TX and RX. I measured the performance of this box (80 meter 
> version)
> and found it to be close to proper phasing, but not as good as the Comtek.
>
> The 2nd (current DX Engineering company in Ohio) 4 square box is RX only. 
> It was
> designed by W8JI and is available direct from DXE. I use one on 160 meters 
> with
> mobile antennas for the vertical elements and it works great.
>
> The Ohio DX Engineering company has said that they may produce a 4 square 
> box (8
> directions) that would TX and RX, but it has not come to market yet as far 
> as I
> know.
>
> 73!
> Tim K3LR
>
>
> Mark Robinson wrote:
>
>> Agreed but I have worked quite a few stations on 80m who were using the
>> Comtek box and they had good directional characteristics from their 
>> arrays.
>> If you have a nice flat location then the Comtek box should work well but 
>> it
>> is not so easy to tweak as the DXE box.
>>
>> Mark N1UK G3ZZM
>>
>> ----- Original Message -----
>> From: "Rick Karlquist" <richard@karlquist.com>
>> To: "jeremy-ca" <km1h@jeremy.mv.com>
>> Cc: <towertalk@contesting.com>
>> Sent: Thursday, 05 July, 2007 3:35 PM
>> Subject: Re: [TowerTalk] How does the DX engineering 4Sq phasing box
>> compare?
>>
>> > IMHO, the DXE is the first box to do it the "right" way.
>> > It is also fairly expensive.  I don't own any of these,
>> > but the DXE is similar to stuff I have homebrewed that
>> > worked well.  It looks like a good implementation.
>> >
>> > Rick N6RK
>> >
>> > jeremy-ca wrote:
>> >> Im considering going to a 4sq for 80M and possibly 160 and wonder how 
>> >> the
>> >> DX
>> >> Engr compares to Comtek and others?
>> >>
>> >> Carl
>> >> KM1H
>> >>
>> >>
>> >> _______________________________________________
>> >>
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