I defy you to find where I ever said I thought this was a good idea, a good deal
or that I was in anyway interested in purchasing one.
On 2/18/2017 11:33 AM, Jim Thomson wrote:
Date: Fri, 17 Feb 2017 11:41:07 -0600
From: Kelly Taylor <ve4xt@mymts.net>
To: Wes Stewart <wes_n7ws@triconet.org>
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] What am I missing....balun
Hi Wes,
Yes, the enclosure is mandated by the choice of coax. Doesn?t mean you have to
choose that coax, however, does it?
If you can see $900 of value in it, then by all means, buy one. I see, maybe,
$100 in parts. Maybe another $50 in assembly costs. Throw in a good profit
margin and money to pay for the engineering and I still don?t see the value
rising to $900.
But from the picture, showing just one turn through the ferrites, it appears to
be the equivalent of a $900 bulkhead connector.
If the smartest guys here can?t see a correlation between the photo and the
published specifications, something?s off, one way or the other.
More people are questioning it than defending it. Don?t forget, that with Array
Solutions? reputation, I went looking at it hoping the critics were wrong.
73, kelly, ve4xt
## If you want to wind high power coax through 2.4 inch OD torroids, RG-393
is the only game in town, that is flexible enough, and small enough turn
radius, to handle 10 kw on the 11m band.
Box costs money, ditto with painting it etc, plus gasket..+ mounting plate from
box to yagi boom. 7-16 Din chassis female cost $40.00 Torrids are cheap.
393 coax is now priced stupid, like over $10.00 per foot. The 6 x 10 kv
rated
comp caps are not cheap, nor are the pair of standoffs. The coax has dual
silver plated braids at each end. They have to be separated and routed
separately to adjacent corners of the 7-16 din
mounting screws, via tabs. It all has to be silver soldered. That coax can
hit 200 deg C. Probably 2 hrs to assemble, at least.
Published specs are for swr only, expressed as return loss. No stated Z or RS
specs. 2 turns through the stack of 6 cores seems a little thin to me. It
would be interesting to compare that config to say 3 urns through the same 6
cores.
The box does not have to be metal, a plastic, gasketed nema box will also work.
Jim VE7RF
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