[TenTec] The Next Flagship

Fri May 23 18:19:31 EDT 2014

Rick,

I have enjoyed the antenna articles on your site before.  (Up next for me
is your 40m monoband delta loop.)  The 80m OCF article looks very
interesting, but can you say how you found the 85/15 location for the
feedpoint?  Was it using computer modeling or by actually moving the
feedpoint while measuring the VSWR?  Or, to ask another way, if I wanted to
duplicate your multiband SWR results, how would I proceed?

Thanks again for the nice articles on your website.

-Neil KD0UKC

On Fri, May 23, 2014 at 4:15 PM, Rick - DJ0IP / NJ0IP <Rick at dj0ip.de> wrote:

> My favorites are similar to Carl's:
>
> 1:  130 to 136 foot wire, fed in the middle with openwire
> 2:  Off-Center-Fed Dipole such as the one I currently use (see:
> http://www.dj0ip.de/off-center-fed-dipole/80m-ocf/)
> 3:  Inverted L, 130 to 136 ft. long as Carl described
>
> 73 - Rick, DJ0IP
> (Nr. Frankfurt am Main)
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Carl
> Moreschi
> Sent: Friday, May 23, 2014 11:06 PM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] The Next Flagship
>
> I also agree if I could only have one antenna it would be a 130 foot dipole
> set up as an inverted V and fed with open wire line to an in shack tuner.
> And my second choice is an end fed 130 wire in an inverted L with an
> outdoor
> automatic tuner and coax from the tuner to the shack.
>
> Carl Moreschi N4PY
> 58 Hogwood Rd
> Louisburg, NC 27549
> www.n4py.com
>
> On 5/23/2014 4:57 PM, Rick - DJ0IP / NJ0IP wrote:
> > 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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