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1. Topband: unipole (score: 1): Author: "Glen" <k4kv@mds-ham.com>; Date: Tue, 15 Sep 2009 11:42:27 -0400; Hello, I would like to speak with anyone running a unipole on 160M. I have constructed the basic antenna on a 120' Rohn 25 tower. 3 wires dropped off the top of the tower, 30" away, to a hoop 3' off; /archives//html/Topband/2009-09/msg00058.html (7,390 bytes)
2. Re: Topband: unipole (score: 1): Author: Herb Schoenbohm <herbs@surfvi.com>; Date: Tue, 15 Sep 2009 13:17:35 -0400; With a 120 foot tower and beam(s) on top you might have enough top loading that the tower structure appears to long for 1/4 wave 1.8 Mhz resonance. You need to also isolate the 40 foot ABG side conne; /archives//html/Topband/2009-09/msg00059.html (9,211 bytes)
3. Re: Topband: unipole (score: 1): Author: W2XJ <w2xj@nyc.rr.com>; Date: Tue, 15 Sep 2009 13:53:01 -0400; The unipole must be tapped at some point to get a proper match. You really need to look at the as X and J, not resonance. You can tap for a high impedance and zero reactance on for 50 ohms and reacta; /archives//html/Topband/2009-09/msg00061.html (9,359 bytes)
4. Re: Topband: unipole (score: 1): Author: "n4is" <n4is@bellsouth.net>; Date: Wed, 16 Sep 2009 17:00:14 -0400; Glen I'm using a Unipole for almost 4 years; it is a very good antenna. The cage helps to detune the tower during RX, without that my RX antennas just don't work at all. The cage is grounded at the; /archives//html/Topband/2009-09/msg00069.html (8,656 bytes)

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