Short or No short ? CB

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Short or No short ? CB

Postby Throbber » Mon Mar 27, 2017 7:12 pm

Hey Peeps,
Hoping someone can answer this really BASIC question with a BASIC answer.
Recently got back into CB's and shortwave radio's and to be honest, having suffered a stroke 5 years ago which had devastating affect on my memory capabilities, i am struggling to get my head around a simple question.

I have recently bought a Sigma Venom 5/8 Wave High Gain Silver Rod CB Base Station Antenna to be able to get some decent receives and do some transmitting in conjunction with a President Zachary (Uniden 300) base station.
Heres my problem, have wired on 2 PL259 plugs on each end, tested "Live to live" and "Ground to Ground" on plugs and then tested Live to ground on both ends, all does well.
But as soon as i connect one end to the antenna the plug on the base station end shows a short across the live to ground !!!!!!, is this normal, if not where on earth can i find the possible location of the short ?.
Need to plan this well as getting up and down a ladder with only one side of my body working takes some planning !!!!.

Thanks in advance

Realistic PRO 2006
Uniden UBC 355CLT
Realistic DX 300
DVB -T 820T2
QYT KT-7900D Quad Band
CRT SS9900
Baefong UV5
Himalaya WB Antenna
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Re: Short or No short ? CB

Postby m0lsx » Mon Mar 27, 2017 7:56 pm

Keeping it simple, the short is at the antenna & not unexpected as it is due to the design.
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Re: Short or No short ? CB

Postby Chris P » Tue Mar 28, 2017 8:47 am

It may appear as a DC short but at 27Mhz it would ( or should ) be 50 ohms and as Alan says is part of the design . so long as the SWR is less than 1:1.8 or thereabouts the antenna is fine
Regards Chris aka G8FFF nipper or tazmin88
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Re: Short or No short ? CB

Postby Throbber » Tue Mar 28, 2017 8:56 am

Hi guys,

Many thanks for the replies, needless to say, i thought that was the case.

Much appreciated

Throbber

Realistic PRO 2006
Uniden UBC 355CLT
Realistic DX 300
DVB -T 820T2
QYT KT-7900D Quad Band
CRT SS9900
Baefong UV5
Himalaya WB Antenna
User avatar
Throbber
 
Posts: 27
Joined: Sat May 21, 2016 3:51 pm


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