Good comments, Dave.
I thought of another thing to add. Because of the through-the-boom element
mounting, it was prohibitively difficult (which means almost impossible) to
put the antenna together on top of the tower, which is often done. That is,
first put up the boom, then take up the elements one at a time and bolt them
on. This approach is especially popular with the larger monobanders, and
larger homebrew monobanders. With a "tilt mount," you can reach both ends
of the boom from the tower. So, the heavy, and large, Telrex antennas had
to be put up all in one piece -- with rope and pulleys, tram, or crane, etc.
Even with a Telrex on a tilt mount, it'd still be challenging, at least, to
take elements in and out of the through-the-boom mounting holes. I guess it
wouldn't be as hard with, say, 10M elements. Still, the plate with U-bolts
approach on the outside of the boom approach has lots of simplicity
advantages.
73 - Rich, KE3Q
----- Original Message -----
From: "David Jordan" <wa3gin@erols.com>
To: "Joe Barnes" <n4jbk@bellsouth.net>
Cc: <TowerTalk@contesting.com>
Sent: Wednesday, March 02, 2005 4:24 PM
Subject: Re: [TowerTalk] telerex
> Hi Joe,
>
> One has to appreciate and remember that typically responders on this
> reflector and perhaps most others speak as if they've done a national
> survey when more
> often their statements are not much more than subjective opinions of one
> instance or one experience or their own nominal personal experience.
>
> Still, it's fun to hear all the hoots and yelps from those that are pro
> something and those that are con, etc.
>
> Opinions and experiences of antenna performance could easily equal or
> surpass the emotional intensity of the current battle over whether
> references to the bible should be allowed in government buildings, haha.
>
> Clearly, a person knows when he has heard a good reciever and he knows
> when he has experienced a good antenna, etc. if he has something to
> compare...
>
> But what you don't know, you don't know.
>
> When I listened to DX with a beam at 35ft and then at 135ft...I knew the
> difference raising the antenna makes first hand! When folks say they
> didn't like the Telrex product I can presume many things (bad location,
> bad installation, bad time in the solar cycle, bad receiver, etc.).
> There are lots of variables for sure. The same can be said for those
> that loved the performance of the antenna (great location, great
> installation, great receiver, optimal sun spot cycle, etc.). It would be
> difficult to
> quantify so many factors and that is where the testing comes in handy.
> There is no doubt in my mind that 40yrs ago the Telrex product was
> better than most available at the time. I think it is also fair to say
> that today's antennas would out perform the old Telrex technology but
> it's prolly not fair to say that the Telrex stuff was junk.
>
> I have a 73 Jeep Renegade in my barn and for me, comparing it to the
> Jeep product of 2005, I'd say the 2005 product is junk, haha. Some days
> it's all in the eye of the beholder!
>
> 73,
> dave
> wa3gin
>
>
>
> Joe Barnes wrote:
>
> >Not real sure where tvd got that the Telrex monobanders were not well
> >built, Im currently using a 6 element 20 meter Telerex that wa
> >originally installed in 1978 and it still rocks, Im thinkin there are
> >few other manufactureres that can make this claim.
> >73, Joe N4JBK
> >
> >
> >
> >
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
> any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|