[TowerTalk] Comtek box

[Frank Mayer]

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