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Re: [TowerTalk] SteppIR and SO2R

To: towertalk@contesting.com
Subject: Re: [TowerTalk] SteppIR and SO2R
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Wed, 24 Jul 2019 11:04:27 -0700
List-post: <mailto:towertalk@contesting.com>
On 7/24/2019 9:55 AM, W0MU Mike Fatchett wrote:
SteppIR is not what you want for contesting with multiple radios and quick band changes. If you don't care then it is fine.  As I get older, I am only 54, and young I have less and less desire to climb or do antenna stuff.  The SteppIR's can require more service.

Several thoughts. First, a SteppIR Yagi can be used on only one band at a time, so if you can have only one tower and only one Yagi on the tower, it doesn't support SO2R. I'm doing SO2R with the 3-el straight SteppIR on one tower and monobanders for 20, 15, and 10 on other towers. I have the real estate to do that. With your limitation of a single antenna for the higher bands AND SO2R, a multi-band antenna with triplexer seems the only practical solution.

Second, my straight 3-el SteppIR has been up for 10 years, and I've never had a problem I could blame on the antenna. By the time I bought it, it was a mature design mechanically. That was NOT true of the bigger "trombone" versions, which are more complex mechanically. As recently as four years ago, local contesters were having failures. W6GJB received one with infant mortality of all three motor assemblies within the first year, and it took a LONG time to get them repaired under warranty.

Third, a SteppIR is a very good choice as a DX antenna for the WARC bands.

Finally, if you can put two Yagis on that tower, I would consider two SteppIRs, one with trombones, one without. Or a tri-band Yagi with triplexer and a straight 3-el SteppIR.

73, Jim K9YC

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