[TowerTalk] 18AVT DC short?

Pete Smith N4ZR n4zr at contesting.com
Mon Mar 10 12:43:18 EDT 2014


Thanks, Kelly - didn't know that was available.

73, Pete N4ZR
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On 3/10/2014 1:22 PM, Kelly Taylor wrote:
> Pete,
> According to http://www.vk4yeh.com/downloads/hygain_18avt_antenna.pdf, a DC
> short is normal.
>
> 73, kelly
> ve4xt
>
>
> On 3/10/14 10:13 AM, "Pete Smith" <n4zr at contesting.com> wrote:
>
>> I recently bought a very old 18AVT-WB which, after working for a while,
>> is no longer resonant on any band, or even close.
>>
>> Brought the base section into the house, and it appears to have a DC
>> short from center to outer conductor of the SO-239, but when I test with
>> MY MFJ-259B, the short is not present at RF.
>>
>> Can anyone tell me if, as it appears, this vertical has an RF choke
>> inside the molded plastic base shunting the output for lightning?
>
>



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