Thanks Dan. IMHO very concise and fair comments - which I happen to agree
with virtually 100%. N.B. I also use a HF LP.
Gene / W2LU
----- Original Message -----
From: "K0DAN" <k0dan@comcast.net>
To: <towertalk@contesting.com>
Sent: Sunday, February 20, 2011 1:49 PM
Subject: Re: [TowerTalk] Tennadyne T28 Opinions ?
> Well what the heck...a number of people asked for my comments regarding
> the T28. I wanted to keep the comments off-list in order to avoid flame
> wars and the inevitable "mine's better than yours" debates. But there were
> enough interested parties that I thought I'd just share my comments on the
> list.
>
> First, I have no commercial or professional relationship with
> Tennadyne...however I have one of their HF log periodics (the T10) and one
> of their VHF/UHF antennas (the T28) and am delighted with the antennas,
> their performance, ease of installation, durability, and the support which
> the company provides. So I am a satisfied customer, that's all. Would I
> like a SteppIR or stacked array, or....? SURE!
>
> Another preamble...EVERY antenna represents compromises. If you go for
> more gain or directivity, you trade something. If you go for lower cost,
> you trade something. Size, weight, tower loading, gain, traps, #
> feedlines, complexity, etc....it's all a big moving target.
>
> As to the T28, it allows me to operate VHF/UHF weak signal with moderate
> gain & directivity. It presents very minimal loading on my mast (it sits
> about 8' above my HF antenna, and there is a V/U vertical above it. I
> enjoy low SWR throughout the 50/144/432 bands, and it is usable (altho
> cross-polarized) even in the FM segments. It was easy to assemble (and I
> have repaired a few bent/broken elements without great difficulty), and it
> uses a single feedline (RG213 off the mast, LMR600 UltraFlex down the
> tower, 1/2" hardline to the shack). My needs are to get on for occasional
> contest or band opening, and the T28 does fine for my needs. Now...there's
> guys in the area with huge/long monoband Yagi's, stacked arrays,
> etc....they are out of my league and can always hear/talk better than my
> modest LPDA.
>
> With this said I have become a big fan of log periodic antennas. There is
> no question that 6-over-6-over-6 stacks, long Yagi's, phased arrays,
> monobanders, and other designs will out-perform an LPDA. But LPDA's do
> offer some extremely strong benefits, among them
> Lightweight
> Extremely efficient radiator
> Simple mechanics & design
> Broadbanded everywhere inside ham bands (no tuner needed)
> No traps
> One feedline
> Works decent outside of hambands
> Resilient to wind/ice loading
> Priced competitively
>
> There have been many debates over pros & cons of log periodics versus
> other designs. Each design has its merits and trade-offs. There are other
> antennas which are bigger/heavier/pricey which will provide more
> gain/directivity, but when you consider that 1 S-Unit = 6 dB, you need
> to do a value analysis as to labor, tower loading, complexity, etc., etc.
>
> So, I am not advertising for Tennadyne, but I've had good luck with their
> HF and V/U designs. For the ham who wants to put up easy and economical
> multi-band antennas with decent gain & directivity, the log periodic
> design deserves consideration.
>
> Good luck and 73
>
> Dan
> K0DAN
>>
>>> Anyone using this antenna ? Would be interested in opinions on
>>> performance,
>>> etc. or competetive products. Looking to mount this over a Steppir to
>>> add
>>> the VHF and UHF bands and also use for HDTV. Not concerned with super
>>> high
>>> gain, just want some gain at VHF and above..
>>>
>
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