Besides the maintenance issues, the SteppIR won't do the instant band changes I
do all the time in contests. Not SO2R, but my station is set up to change
bands as fast as the K3 can. That's become a vital part of my operating
strategy.
So far, the Skyhawk and JK Mid Tri are looking good. Skyhawk is cheaper, but JK
looks more rugged and has a higher wind rating.
73,
Scott K9MA
----------
Scott Ellington
--- via iPad
> On Aug 7, 2017, at 12:59 PM, Jim Brown <k9yc@audiosystemsgroup.com> wrote:
>
> If you don't need to tri-plex it to two radios, it's hard to beat a SteppIR.
> My neighbor K6XX has wrangled my straight 3-el at the top of my 120 ft tower
> without difficulty. Standard procedure is to assemble and test it on the
> ground, then remove the elements, pull both elements and boom up the tower,
> and reassemble. That straight 3-el is light enough for one strong guy to
> handle pretty easily, and it's gain is comparable to any high-efficiency 3-el
> Yagi (meaning full-size elements, without traps). If you doubt that, I
> suggest that you read N6BT's self-published "Array of Light" book, wherein he
> debunks some of the phony claims and "physics from another universe" used in
> advertising for some of these products. Some of these ads, for example,
> claimed greater gain than an ideal monoband Yagi with the same number of
> elements and boom length.
>
> If you do need to tri-plex, I'd look at the new products from G0KSC.
>
> 73, Jim K9YC
>
>> On 8/6/2017 2:48 PM, K9MA wrote:
>> My 28 year old TH7 needs to come down for maintenance, and I'm told the trap
>> end caps MFJ now sells don't last long. I also may be just a matter of luck
>> that no bugs have moved into any of the traps. So, I'd really like to
>> replace it with a trapless antenna. The TH7 has served me well, having last
>> been put up in 1993. It needs to be replaced before I'm too old to climb the
>> tower!
>>
>> Here are the requirements:
>>
>> Performance comparable to TH7
>> Boom length 24 feet or less
>> No traps or fragile linear loading
>> Can be assembled on the tower (as was the TH7 in 1993.)
>>
>> At this point, the Skyhawk appears to be my best option, at least of the
>> tribanders available in this country. Any experience with the Skyhawk, or
>> other suggestions?
>>
>> 73,
>>
>> Scott K9MA
>>
>> ----------
>>
>> Scott Ellington
>>
>> --- via iPad
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>
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