[Elecraft] [K3] Issue with HI CUR on 12m
Alan - G4GNX
g4gnx at g4gnx.com
Wed Oct 14 13:58:25 EDT 2020
No sweat Bill. Sh*t happens. :-D
73,
Alan. G4GNX
------ Original Message ------
From: "Bill Coleman" <aa4lr at arrl.net>
To: "Alan - G4GNX" <g4gnx at g4gnx.com>
Cc: "Elecraft" <elecraft at mailman.qth.net>
Sent: 14/10/2020 18:55:01
Subject: Re: [Elecraft] [K3] Issue with HI CUR on 12m
>In this case, it wasn’t RG-213, but RG-303. The author regrets the error.
>
>> On Oct 14, 2020, at 1:45 PM, Alan - G4GNX <g4gnx at g4gnx.com> wrote:
>>
>> Not wishing to pick a fight, but he said that he is using a balun rated at 1KW.
>>
>> What you describe is a common mode choke and as I'm sure you know, that is not a transformer which is what I described.
>>
>> I can see Jim's frustration. Folks really need to get to grips and properly understand the terms they are using, otherwise we get into meaningless arguments and false advice.
>>
>> RG213 is a commonly used co-axial cable: https://www.awcwire.com/productspec.aspx?id=rg213-coaxial-cable
>>
>> 73,
>>
>> Alan. G4GNX
>>
>>
>> ------ Original Message ------
>> From: john at kk9a.com
>> To: elecraft at mailman.qth.net
>> Sent: 14/10/2020 18:17:00
>> Subject: Re: [Elecraft] [K3] Issue with HI CUR on 12m
>>
>>> AA4LR is using #43 ferrite beads on RG-313 coax. I am not sure what RG-313 is however there should be no ohm meter short unless he is using a hairpin match. Perhaps there is a flaky connection somewhere in his system. I had a lot of RF feedback problems with my K3S when using a corroded station in the Caribbean but no current warnings.
>>>
>>> John KK9A
>>>
>>>
>>>
>>> Alan - G4GNX wrote:
>>>
>>>
>>> I presume that you disconnected the feeder from the balun when you did
>>> the DC Ohms test? If not, there is something wrong because you should
>>> see almost a dead (DC) short through the primary of the balun.
>>>
>>> I must admit I put off replacing my antenna until I was forced to. Might
>>> be the way to go. :-)
>>>
>>> 73,
>>>
>>> Alan. G4GNX
>>>
>>>
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>>
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>
>Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr at arrl.net
>Web: http://boringhamradiopart.blogspot.com
>Quote: "Not within a thousand years will man ever fly!"
> -- Wilbur Wright, 1901
>
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