Bruce... besides giving you a custom-tailored, precisely tuned yagi anywhere
in it's freq range, the SteppIR does some neat tricks that are useful in
DXing and Contesting. Check them all out on the SteppIR website... but I
think the best one is the nearly instantaneous 180* change in direction
without rotating the beam. How often would a quick switch from short to
longpath be useful? You know the answer.
The T-10 will give you broadband coverage... a compromise at any frequency
in its range, whereas the SteppIR will give you custom tuning.... a tuned
3-element yagi at any frequency in its range.
It wouldn't surprise me if the SteppIR turns out to be the most important
new antenna construction idea since the invention of the yagi itself. To
me, the decision for the SteppIR is obvious.
73, Jerry K3BZ
----- Original Message -----
From: "k1my" <firstname.lastname@example.org>
To: "Towertalk submital" <email@example.com>
Sent: Thursday, February 27, 2003 1:44 PM
Subject: [TowerTalk] help me make a decision
> This antenna will go on a 70 foot tower. It is the prime WARC beam for my
> station and is a backup for my large tribander that is at 100 feet. I do
> operate on 6 meters. I have narrowed the choice down to a Tennadyne Log
> Periodic (T10) & the 3 element SteppIR
> T10 SteppIR
> coverage 13 - 33 mHz 14 - 52 mHz
> boom length 24 ft 16 ft
> claimed gain 6.1 dBd 4.9 - 6.3 dBd
> HPBW 52 degrees 29 - 34 degrees
> FB ratio 15 - 25 dB 15 - 42 dB
> weight 49 lb 42 lb
> wind area 10.1 sq ft 6 sq ft
> max SWR 1.7 : 1 1 : 1
> moving parts? no yes
> electrically reversible? no yes
> Forget price for the moment.
> Both cover the bands that I am interested in.
> Gain appears to be similar - it is a function of boom length - correct?
> HPBW is less on SteppIR but how do they do that with a shorter boom?
> FB is claimed better on SteppIR
> SteppIR's claim to fame is a 1 : 1 SWR at all frequencies. What does a
> SWR at 1 : 1 give me in the real world? More watts transferred to antenna?
> Is this a stronger signal at the DX stations QTH? Or what?
> The SteppIR has moving parts but I have not heard an outcry that they are
> not reliable.
> I am a DXer and sometime contester.
> Which one do I choose?
> Thanks in advance ....
> 73, Bruce K1MY
> 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.
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