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

[Kelly Taylor]

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 at 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 at mymts.net wrote:
>> ...
>> 
>> BTW, isn't the attenuation noted (called return loss) the only way any choke actually chokes?
>> 
> 
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