Jim, I can't agree. Sorry.
You are not on the same page as I am.
You push a resonant antenna, but that's a monoband antenna.
You sell the "all band dipole" much too short.
YES you are correct about its many nulls on the high bands. They are
definitely not as bad as you make it out to be.
I've seen your current and past QTH (in Chicago).
You are a lucky man. Compliments for making best use of the space available
for an antenna farm - especially in Chicago!
Many people, possibly most, can have just one single antenna at their QTH.
They will never have what you have or have had in the past.
Many use the non-resonant or openwire fed dipole - the one you say is not a
good antenna.
You do it a big injustice to say it is a bad antenna.
Many experts, including W1ICP (Lew McCoy) and W4RNL (L.B. Cebik) have said
"if I could only have just one antenna, it would be the openwire fed
dipole."
My own experience: go to CQWW DX Contest, "All Time Records" (CW).
Do a search on "DJ0IP".
I'm on the list as an all time record holder (high power assisted) in one
European country, set using this antenna that you claim does not work. My
record has stood for over 20 years. You don't set records with antennas
which do not work.
So yes, there are lots of better mono-band antennas, but I don't know of any
multiband antenna that works better.
If you do, PLEASE share it with us. I will gladly be proven wrong in this
case! (hi)
73 - Rick, DJ0IP
(Nr. Frankfurt am Main)
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Jim Brown
Sent: Friday, May 23, 2014 6:45 PM
To: 'Discussion of Ten-Tec Equipment'
Subject: Re: [TenTec] The Next Flagship
On 5/23/2014 3:06 AM, Rick - DJ0IP / NJ0IP wrote:
> I agree with all of that, but you leave one point out. "Openwire."
> As you well know, the impedance of an openwire dipole varies from band
> to band and can be all over the map, up to a couple thousand Ohms.
Rick,
I didn't leave it out at all -- it's one of the non-resonant antennas I
talked about. This is a lousy antenna, a bad idea. Yes, the Handbook says it
"works" on all bands. So does a light bulb. That "all band"
dipole has a pattern that varies widely from band to band, with deep nulls
in some directions where there are stations you would like to work.
The place for antenna match boxes is to make a dipole cut for 80CW work on
the phone band, to load a random long wire that ends in the shack, to
correct for a dipole that isn't quite the right length.
I'm a big fan of fan dipoles, which are easy to build, which work really
well, and which have very predictable patterns. If you have room for a 20M
dipole, you can hang a 20/15/10 fan. Barry at Hypower Antenna Company sells
very nice loaded dipoles that also cover 30 and 40 and can fit 80M into
about 100 ft. That was my low band antenna in Chicago. He makes a version
for 160 and 80 with a fan element for 40 that also works very well on 30M.
73, Jim K9YC
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