BNC connectors

steve149

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I would normally used isolated versions (plastic spacer in the middle) if the racks are metal to prevent grounding issues.


Alternate supplier

 
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prodjay

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I would normally used isolated versions (plastic spacer in the middle) if the racks are metal to prevent grounding issues.

What cable should I get for this?

I did not see any BNC to BNC cables at PartsExpress.
 
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steve149

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prodjay

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They have similar at Amazon ..


Thanks Steve I knew you would come thur.
 
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Ausumm

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I actually found cables with a flush mount BNC on one end.
I made the mistake of buying cheap ones,
and they barely made it past the installation.
(and even with a plastic washer, I still had grounding issues)
Bought EV brand flush mount cables to match my wireless unit and haven't had an issue since.

IMG_20191115_152500274.jpg
 

sawdust123

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Buy 50 ohm cables, not the 75 ohm RG-59 cables Steve linked to. Low cost (high loss) 50 ohm cables are called RG-58. You are better off buying lower loss RG-8x. RG-8 is better than RG-8x but thicker. Pros often use LMR cables from Times Microwave. The higher the LMR number the better. LMR 400 is pretty popular with pros for anything over 20'. The 500 and 600 are even better and used for longer distances. You want to compare loss per unit length when comparing cables.
 
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steve149

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Buy 50 ohm cables, not the 75 ohm RG-59 cables Steve linked to. Low cost (high loss) 50 ohm cables are called RG-58. You are better off buying lower loss RG-8x. RG-8 is better than RG-8x but thicker. Pros often use LMR cables from Times Microwave. The higher the LMR number the better. LMR 400 is pretty popular with pros for anything over 20'. The 500 and 600 are even better and used for longer distances. You want to compare loss per unit length when comparing cables.
The ones I linked are listed as 50 ohm ?
 
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steve149

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Hmmm, when I brought up the link last night it said RG-59.
Does say RG59 and below says 50 ohm .. maybe it WOULD be best to find another option, though at 2 feet, probably not much of a difference.
 
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steve149

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prodjay

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OK .. here's another cable source .. and you can get 50 ohm BNC cables in .5, 1, 2, 3, 4 ... foot lengths with either straight or rt angle connectors ... INFOMANAGE/SEARCHITEMS/SEARCH - (http://www.cablesondemand.com/Library/InfoManage/SearchItems.asp?FolderID=0&SessionID=%7B49AF1E54-E921-4A48-B035-22DE8AFD3673%7D&Action=Search&LookFor=bnc)

20% OFF cables in December with CABLE20 code.
You know I wish I could find both the cables and panel mounts at the same place.
 
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steve149

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Quick look ...



or buy 2 of these ..

 
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Proformance

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Sells everything you need in one place.

You'd likely get by using 75 ohm connectors or cable for antenna wire, but not the other way around (digital video for example.)

Keep track of your connectors or links because in some circumstances using a 50 where a 75 is needed will result in no signal, and it's easy to mix up adapters and cables. Also, each connection (joiners count twice) will add signal loss.
 
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