Vic,
That picture does apply, the actual scan of that CB balun. Of course it
will have no chance to be a balun at lower HF band frequencies.
The point of the product listing is to attract commercial business not to
start a fake news article on amateur radio reflectors.
Nobody buys a $900 Balun without talking to us first. We then can design a
proper balun for them with safety factors built into it.
Sometimes we use hardline, transformer oil, and flanges. Many times they
cost less. Were doing qty50 800 baluns for a defense agency right now that
are less for instance.
But having the capability is what were trying to imply. I don't remember
but the choking reactance in the 11m band was thousands of Ohms. You have
to be careful with 31 material you put allot of loose wound turns around it
and you have a 500 KHz balun with 5 kOhms but it dwindles to less then 300
ohms at 30 MHz. You have to be able to measure this of course.
As a side note there are companies that duplicate our pictures which are
intentionally shown to be wrong, and it's fun to see them proudly showing
off "their" baluns.
Jay, WX0B
Jay Terleski
Array Solutions
214 954 7140
On Fri, Feb 17, 2017 at 1:25 PM, Vic Rosenthal <k2vco.vic@gmail.com> wrote:
> So the spec of 1.8 - 30 MHz does not apply to the balun in the photo?
> --
> Vic 4X6GP
>
> On February 17, 2017 5:41:53 PM GMT+02:00, Jay Terleski <
> jayt@arraysolutions.com> wrote:
>>
>> What your missing Jim is this is a Balun for the band below 10m 8o) Where
>>> the real ampllifiers are used.
>>>
>>> We sell a few of these a year to these big amp enthusiasts, and I am many
>>> times impressed with their knowledge of what it takes to run and maintain
>>> these amplifiers. Some guys even have 3 phase running into their basements
>>> where they have a large power plant.
>>> We build these with EIA flanges too. Also some agencies buy our bigger
>>> baluns for their applications. We usually consult with them to get the
>>> best performance from the custom baluns for their frequency range.
>>>
>>> Thanks for asking.
>>>
>>> Jay, WX0B
>>>
>>>
>>> Jay Terleski
>>> Array Solutions
>>> 214 954 7140
>>>
>>>
>>>
>>>
>>>> 1. What am I missing....balun (Jim Thomson)
>>>>
>>>> Message: 1
>>>> Date: Thu, 16 Feb 2017 09:58:50 -0800
>>>> From: "Jim Thomson" <jim.thom@telus.net>
>>>> To: <amps@contesting.com>
>>>> Subject: [Amps] What am I missing....balun
>>>> Message-ID: <B8422C4EB8114F5F8257F6CEFBF8E592@JimPC>
>>>> Content-Type: text/plain; charset="iso-8859-1"
>>>>
>>>> https://www.arraysolutions.com/index.php?_route_=as-50-1din-20k
>>>>
>>>> What am I missing here ? Appears to be 2 turns through 6 x type 31
>>>> cores.
>>>> These are standard 2.4 inch OD cores. Coax is just RG-393. The mess
>>>> of caps on the balanced end is to tune out the xl of the threaded brass
>>>> material used to go through each insulator. Rated for 20 kw cw, and 40
>>>> kw ssb,
>>>> from 1.8 to 30.0 mhz. 12 x 6 x 4 inch nema box. Box appears to be
>>>> aluminum.
>>>>
>>>> I cant fathom how this would have enough Z or RS to be effective on any
>>>> band, maybe
>>>> 10m.
>>>>
>>>> Jim VE7RF
>>>
>>>
>>>
>>> ------------------------------
>>
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
>>
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