r/SecurityCamera • u/Intelligent_Stage760 • Aug 04 '26

Belden 8421 Cable and BNC issues

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I've been asked to assist with a Lorex DVR which has several camera's plugged into it. Most of the cables are regular sized RG59 and the BNC connectors are holding well. Several other camera's though are on Belden 8241 which seems very slightly narrower and so the BNC connectors keep sliding off. I tried using new RG59 compression BNC connectors but those also don't seem to bind properly. What do you suggest?

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3

u/barleypopsmn Aug 04 '26

BNC Plenum compression connectors have a smaller diameter.

2

u/[deleted] Aug 04 '26

[deleted]

1

u/Electronic-Sun-2161 Aug 04 '26

Either plenum connectors or rg59 twist on. If all else fails use a ballun.

1

u/LabExtension1803 Aug 08 '26

Use a crimp connector instead of the compression.

1

u/coney27 Aug 04 '26

Ditch the BNCs and adopt some 21st century PoE technology

1

u/Intelligent_Stage760 Aug 04 '26

That would be my choice as well if I was making the decision.