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- Newsgroups: rec.radio.cb
- Path: sparky!uunet!spool.mu.edu!sdd.hp.com!hp-cv!hp-pcd!hpcvaac!billn
- From: billn@hpcvaac.cv.hp.com (bill nelson)
- Subject: Re: Basic Advice
- Message-ID: <1992Nov22.100630.16548@hpcvaac.cv.hp.com>
- Organization: Hewlett-Packard Company, Corvallis, Oregon USA
- References: <103400053@hpfcso.FC.HP.COM>
- Date: Sun, 22 Nov 1992 10:06:30 GMT
- Lines: 22
-
- myers@hpfcso.FC.HP.COM (Bob Myers) writes:
- : > Nope. It may be a half-wave vertical, but it is not a half wave dipole.
- : > It is end fed, not fed in the middle. Look at the sensitivity of end
- : > fed antennas, you will see that it is high for all lengths.
- :
- : It still might be a vertical half-wave dipole - remember the "bazooka"
- : design, in which the feed is *through* the end, with the feedline going
- : through a cylindrical element to the mid-point, and then the outer conductor
- : ties to the "pipe" you just passed through, while the inner conductor ties
- : to the upper element. In this case, no radials would be required or
- : desired. The point is, your blanket statement regarding radials needs
- : some disclaimers - there ARE vertical designs which fit the description
- : given but which SHOULD NOT be used with radials. The first place to check
- : in this case, given that it's a commerical design, would be in the owner's
- : manual, or lacking that, a call to Shakespeare.
-
- You are right - I had forgotten about the bazooka, although it is not
- end fed.
-
- I did state that radials were not desired on dipoles.
-
- Bill
-