Based on 25 ft of RG-213 at 30 MHz the loss will be about 0.3 dB. Lower
frequencies will be less.
73
Bob, K4TAX
> *Helped my friend.... Dale/KA4ZDR with mine. He does quite well with the
> Multiband Dipole and the Ugly Balun. I Need to build another one. They
> work
> GREAT. I was just concerned with the Loss of the Coax in my
> Windows/Ladder
> Line to Coax Transformation. Total length of Coax out the window is 10
> feet
> to the Ladder Line. I know that there is loss there due to SWR but, You
> have to do what you can with these Triple insulated and All Aluminum
> windows. I never thought to ask the Engineers in our group, which set-up
> would have less loss?*
> * 73 Wade/KJ4WS*
>
> On Sun, Jul 28, 2013 at 1:12 PM, Robert Mcgraw <rmcgraw@blomand.net>
> wrote:
>
>> Has everyone forgotten about "the ugly balun"? Inexpensive to build
>> and
>> will handle about all the power one can generate. Inside or outside,
>> no
>> housing required. A 25 ft length of RG-213 and about 18" of 4"PVC is
>> about all required. If you intend to use it at frequencies above 7.0
>> MHz
>> then less coax can be used.
>>
>> 73
>> Bob, K4TAX
>>
>>
>> > OK...
>> >
>> > 1) I use a 4:1 Balun Designs 4114ocf on my 40-10 meter OCF dipole.
>> >
>> > 2) I use a DX-Engineering 4:1 Un-Un on my 43 ft vertical, when it is
>> > set for 43 feet, and no balun at all when I lower it to a 33 ft 40 m
>> > ground plane antenna.
>> >
>> > I considered a feed line choke... but DX-E was emphatic it would
>> not
>> be
>> > necessary, and while I see no adverse result therefrom, I wonder
>> > whether a feed line choke would still be a good idea, and I may try
>> one
>> > anyway. In contrast, I wonder why I should purchase a solution
>> without
>> > first having a problem...
>> >
>> > 3) I use a Cal-AV EB-2 Line Isolation Choke (purchased from Array
>> > Solutions) on my rotatable dipoles made of aluminum tubing. (I see
>> > these no longer appear on the Array Solutions web site...)
>> >
>> > 4) I have also used the Cal-AV EB-2 Line Isolation Choke on my
>> > elevated vertical ground plane antennas, although I have been
>> fortunate
>> > that I cannot see any advantage with or without it, and a lack of
>> > problems is always a welcome condition.
>> >
>> >
>> > ------------------- K8JHR --------------------
>> >
>> >
>> >
>> > On 7/27/2013 10:59 AM, denton sprague wrote:
>> >> Thought would start a little poll..
>> >> Which balun are you using with your 238 series TT tuners and multi
>> band
>> >> antenna?
>> >> Currently, I use a balun designs 4214t 4:1 balun to feed my 80 meter
>> >> horizontal loop?with 450 ohm feeders.
>> >> _______________________________________________
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>> >>
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>> >
>>
>>
>> --
>> Disclosure:
>> I am a Tentec Ambassador and compensated according to the Tentec
>> Ambassador plan. I serve as a volunteer beta test person for the Omni
>> VII, Eagle and Argonaut VI products. Otherwise, I hold no business or
>> employment interest with Tentec.
>>
>> _______________________________________________
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--
Disclosure:
I am a Tentec Ambassador and compensated according to the Tentec
Ambassador plan. I serve as a volunteer beta test person for the Omni
VII, Eagle and Argonaut VI products. Otherwise, I hold no business or
employment interest with Tentec.
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