[TowerTalk] Comtek box

[kb9cry at comcast.net]

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
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