Topband: Top band Resonat freq of 90' tower

jacobsen_5 at msn.com jacobsen_5 at msn.com
Sun Aug 26 19:29:33 EDT 2007


Charles, K5ZK, was wondering about the res. freq of his tower, 90' with KT34XA. After giving him a wise guy and SWAG reply, my curiosity was tickled, so I booted up EZNEC.

Charles,  I used a 90' tower, 12" in diam, with a 32'/3" boom at the top. ELNEC says resonant freq is 2.15 mhz.  Bandwith is about 200 khz +/-.  This might give you a starting point.   FWIW, the 90' tower alone is resonant at about 2.6 mhz with abt 350 khz BW.........

Again, good luck with the project.

73
K9WN  Jake


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