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| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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2nd Jan 2016, 4:44 pm
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#1 |
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Hexode
Join Date: Mar 2014
Location: Fareham, Hampshire, UK.
Posts: 482
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HF connector
Hi all,
Can anyone identify this connector, please? It looks a bit like a BNC with threaded collar or an oversized sat connector. The male thread has an outer diameter of 16.5 mm, could be imperial. The make could be starting with 'Teleg' the rest is unreadable. I really don't know what to put in the search engine. The photo is not very good. The connector comes from an aerial rod which was outdoors for at least 20 years, before we moved in. Any suggestions  ?BR Stef.
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2nd Jan 2016, 4:55 pm
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#2 |
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Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,642
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Re: HF connector
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2nd Jan 2016, 4:56 pm
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#3 |
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Hexode
Join Date: Mar 2014
Location: Fareham, Hampshire, UK.
Posts: 482
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Re: HF connector
The inside looks like this ... Maybe this helps a bit more.
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2nd Jan 2016, 4:57 pm
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#4 | |
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Hexode
Join Date: Mar 2014
Location: Fareham, Hampshire, UK.
Posts: 482
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Re: HF connector
Quote:
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4th Jan 2016, 11:05 am
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#5 |
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Nonode
Join Date: Jun 2009
Location: Herefordshire, UK.
Posts: 2,495
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Re: HF connector
I believe the N type connector has different centre pin diameters depending upon whether they are for 50 or 75 Ohms impedance use - so take care to get the correct one if you want to avoid damaging it.
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4th Jan 2016, 11:32 am
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#6 |
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Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,874
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Re: HF connector
Your photo shows a pair of 50 Ohm 'Type-N' connectors. The male is on the left, female on the right.
The 75Ohm version has a smaller centre pin. Mating a 75 Ohm male into a 50 Ohm female does no damage but doesn't always make a connection. Mating a 50 Ohm male into a 75 Ohm female will destroy the female. So it's worth checking, though 75 Ohn ones are now relatively rare. The cable fitting is the compression gland version, and they are re-usable and quite strong. They are also supposed to be watertight (look for rubber ring seal inside the screw ring from the connecting end of the male. These are considered measurement grade up to 18GHz One of the best ever connectors. David
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