[TowerTalk] Dx engineering 4-sq box

[Tim Duffy]

The units are not the same. There are differences in the components used and
possible changes in port assignments. I have measured the performance of both
boxes and the DX Engineering version does not come close to the performance of
the Comtek box. Comtek's components and quality control (phase relationship vs
frequency) is superior.

The design for these units is outlined in the ON4UN Low Band book. I suggest
you take a look at the schematic.

Comtek's web site is http:\\www.comteksystems.com

73,
Tim K3LR

ted demopoulos wrote:

> I've got a DX Engineering 4-square unit (supposed to be almost identical to
> the Comtek) which has a strange quirk. SW and NW are reversed from the
> markings indicated on the control box (I have set up V1 as NE, V2 as Se, V3
> as SW and V4 as NW).
>
> everything else seems to work well. I have checked my control cable
> connections, and even tried swapping the NW and SW antennas as connected to
> the phasing box - the array stops working, no FB or F/S anymore.
>
> I'm thinking that the control cable connections must be mislabeled. Any
> thoughts before I randomly start changing control cable connections??
>
> 73
> Ted, KR1G
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