Thanks Tim,
Last question.
There is a barbed wire fence which runs for many hundred feet in both
directions adjacent the location of the 40m and 80m square sites.
I assume given the length of the barbed wire fence it's not going to couple
significantly and thus would not give me a problem?
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
-----Original Message-----
From: Tim Duffy K3LR
Sent: Thursday, August 30, 2012 10:29 AM
To: 'Jeff Blaine' ; towertalk@contesting.com
Subject: RE: [TowerTalk] four square box
Hi Jeff:
As you can see from the on line manuals and photos - they are physically
close. The housings are just a little different.
I only used the DXE box for a test. I have used the Comtek box for over 20
years - so it is reliable and durable. I am using Comtek boxes on four
square antenna systems on 80, 40, 20, 15 and 10 meters. They all work great.
I don't think you can go wrong with either box for driving a four square
array.
73,
Tim K3LR
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Jeff Blaine
Sent: Wednesday, August 29, 2012 9:29 PM
To: k3lr@k3lr.com; towertalk@contesting.com
Subject: Re: [TowerTalk] four square box
Thanks Tim,
I thought they would be similar. Any delta in reliability, durability or
other kinds of creature comforts?
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
-----Original Message-----
From: Tim Duffy K3LR
Sent: Wednesday, August 29, 2012 9:17 PM
To: 'Jeff Blaine' ; towertalk@contesting.com
Subject: Re: [TowerTalk] four square box
Hello Jeff:
I have tested and used both of these units. With ground mounted mono band
verticals - the performance difference between the two was not significant
on 80 meters.
As a test - we installed the DXE unit in one four square and the Comtek unit
in another other four square - so side by side near field and DX operational
measurements could be made at the exact same time.
The forward gain from the array was the same (within .1 dB near field). The
front to back null was within 2 dB, DXE vs. Comtek. The amount of power at
the dump port was within 1 dB.
Both units give excellent on air results.
73,
Tim K3LR
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Jeff Blaine
Sent: Wednesday, August 29, 2012 9:07 PM
To: towertalk@contesting.com
Subject: [TowerTalk] four square box
Is there a general consensus on preference between the performance of the
Comtek and DX Engineering units?
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|