[TenTec] The Next Flagship

[Bob McGraw - K4TAX]

In practice, a 2 wire dipole works 5 bands.  Cut for 80M, harmonically works 
on 20M and 10M.  Then add the second wire fed parallel being cut for 40M 
works harmonically on 15M.

A better choice, space permitting, cut for 160M will work 40M and 15M and 
the 2nd wire cut for 80M will work for 20M and 10M.  Here we have 2 
wires/dipoles fed parallel that work 6 bands.


In both cases it is better to cut to the low end of the band and let the 
tuner make the radio happy.

73
Bob, K4TAX




----- Original Message ----- 
From: "Rick - DJ0IP / NJ0IP" <Rick at DJ0IP.de>
To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
Sent: Friday, May 23, 2014 3:57 PM
Subject: Re: [TenTec] The Next Flagship


> 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 at 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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