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Re: [TowerTalk] What am I missing....balun

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Subject: Re: [TowerTalk] What am I missing....balun
From: Patrick Greenlee <patrick_g@windstream.net>
Date: Sat, 18 Feb 2017 10:23:34 -0600
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Am I the only one thinking we should maybe stop walking over the grave of this dead horse that has been dead for a week? For all I care they could sell the thing to CBers for $9000 and it still wouldn't be all that important to waste time discussing it. What about doughnut holes? Should they be allowed to sell "byproduct scraps" of a commercial baking process as first quality food items for human consumption? Shouldn't there be regulations to protect the public from such? What about the extraterrestrial connection? Who knew it and when did they know it?


On 2/17/2017 11:41 AM, Kelly Taylor wrote:
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



On Feb 17, 2017, at 11:27 AM, Wes Stewart <wes_n7ws@triconet.org> wrote:

Absolutely not.  The way I read the data presented, it's all about input match, 
which says absolutely nothing about the common mode impedance, which is the 
actual choking mechanism.

Return loss, SWR, Gamma, rho, S11, etc. are all ways to express the same thing, 
how well does the DUT input, match the system impedance.  If you don't know 
this that perhaps you should refrain from commenting.

And when you criticize the enclosure and believe it is unnecessary, you're 
wrong; the outer jacket on that coax would last about 15 minutes out in the 
weather.

Wes  N7WS
ps. I don't work for Array Solutions, don't design their products and as best I 
can remember have never done business with them.


On 2/17/2017 6:40 AM, ve4xt@mymts.net wrote:
...

BTW, isn't the attenuation noted (called return loss) the only way any choke 
actually chokes?

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