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

[Mark Robinson]

Yes the Array solutions box is a adjustable and doesn't rely on phasing 
lines. Then there is the DX Engineering 4 square receiving array

Mark N1UK G3ZZM


----- Original Message ----- 
From: "Rick Karlquist" <richard at karlquist.com>
To: "Mark Robinson" <markrob at mindspring.com>
Cc: <k3lr at k3lr.com>; <towertalk at contesting.com>; <richard at karlquist.com>
Sent: Thursday, 05 July, 2007 5:56 PM
Subject: Re: [TowerTalk] How does the DX engineering 4Sq phasing box 
compare?


>I was confused too.  The array solutions is the box that
> does things "right".
>
> Rick N6RK
>
>
> Mark Robinson wrote:
>> 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 at k3lr.com>
>> To: "Mark Robinson" <markrob at mindspring.com>
>> Cc: <TowerTalk at contesting.com>; <richard at 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 at karlquist.com>
>>>> To: "jeremy-ca" <km1h at jeremy.mv.com>
>>>> Cc: <towertalk at 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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>>>> >>
>>>> >>
>>>> >
>>>> >
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>>
>
>