[TowerTalk] Comtek box

[Guy Olinger, K2AV]

So what you are saying is not 4-6 dbi, but 4-6 db over a single 
vertical similar to the 4 in the 4-sq. Or four of them gives you about 
quadruple the perceived power over one of them, or that the phasing 
network per se is doing its job.



----- Original Message ----- 
From: <kb9cry at comcast.net>
To: "Frank Mayer" <domino at worldlynx.net>; "'towertalk'" 
<towertalk at contesting.com>
Sent: Thursday, November 18, 2004 9:25 AM
Subject: Re: [TowerTalk] Comtek box


>I also have a single HF2V far away from the 4 square and have done on 
>the air tests with EU stations switching back and forth between the 
>two setups.  I'll admit the gain testing may have also been affected 
>by propagation, etc.  Also, I've done a lot of receiving testing 
>looking at the differences on the S meter on the rig (930S) while 
>switching between the two.  What I will state is that there is 
>definately an improvement.  Phil
>
> -------------- Original message -------------- 
>
> How do you know you are getting 4-6db gain?
> WY3D
> ----- Original Message ----- 
> From: kb9cry at comcast.net
> To: 'towertalk'
> Sent: Thursday, November 18, 2004 8:48 AM
> Subject: [TowerTalk] Comtek box
>
>
> I'm a chemical engineer by education and experience and have a 
> working knowledge of electronics, radio, and antenna design but am 
> no expert at it.  I don't think I'm any less of a DXer than the next 
> one and I just love my Comtek box.  I have it set up for 75M phone 
> running Butternut HF2Vs (shortened ground mtd verticals).  On the 
> air testing with EU stations yields the stated 4-6 dB gain and 20DB 
> front to back and 18 dB front to side.   Each vertical has 55, 132 
> ft. radials and measured dump power (using Diamond Wattmeter at 
> phasing box) is 0% on 75, 10% on 80 CW, and also 10% on 40 (antennas 
> are designed for 40M also and system works on 40 but doesn't have 
> much gain or front to back or side) and SWR in shack is always less 
> than 1.5:1.  So maybe it's not optimum but it certainly ain't broke 
> and therefore I don't try to fix it.  Cu on the lowbands, Phil 
> KB9CRY
> _______________________________________________
>
> See: http://www.mscomputer.com  for "Self Supporting Towers", 
> "Wireless Weather Stations", and lot's more.  Call Toll Free, 
> 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> _______________________________________________
>
> See: http://www.mscomputer.com  for "Self Supporting Towers", 
> "Wireless Weather Stations", and lot's more.  Call Toll Free, 
> 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>