Ground Loop Isolator BNC-M to BNC-F

Break free from the ground loop interference problems plaguing your CCTV installation with this BNC ground loop isolator!
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List Price$19.99
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Part # 335-376
  • Break the ground between points in a CCTV system
  • Saves troubleshooting time
  • 6" leads terminated with BNC-F and BNC-M

Product Details

Ground Loop Isolator BNC-M to BNC-F

Video interference caused by ground loops can waste hours of troubleshooting time and wreak havoc on your CCTV system. Hum bars called herringbone (diagonal lines on the screen) and AC beat (a wide, barely visible bar that rolls from the bottom to top of the screen) are the most common visible evidence of a ground loop. Ground loop isolators break the ground between points of the system potentially eliminating or lessening the affects of the ground loop. The isolator is installed between the camera or video source and the DVR, switch or matrix.

Ground Loop Isolator BNC-M to BNC-F
  • BrandParts Express
  • Part Number335-376
  • UPC844632099359
  • Product CategoryCamera Mounts, Power Supplies & Accessories
  • Unit of MeasureEA
  • Product Rating
    (2 Reviews)
  • Weight0.22 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Ground Loop Isolator BNC-M to BNC-F
in the Camera Mounts, Power Supplies & Accessories product category.


Ground Loop Isolator BNC-M to BNC-F
Ground Loop Isolator BNC-M to BNC-F is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Will fix your linesI had horizontal lines on several of my video channels fed via CAT5. Installing these at the DVR eliminated the lines 100% They do not affect video quality at all, as some will tell you.On three cameras, additional GLIs were installed at the camera since they were mounted on a metal building and grounded to the building.In the future, I will be installing GLIs on all video feeds to avoid potential problems.
Date published: 2013-10-05
Rated 5 out of 5 by from Bars in VideoWe were getting the typical scrolling lines in the video, typical of a AC ground loop. We installed the isolators at both the camera and the DVR. The bars in the video were eliminated !
Date published: 2012-09-18
  • 2015-11-25T06:26CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_2
  • loc_en_US, sid_335-376, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email  for a prompt reply.
Ground Loop Isolator BNC-M to BNC-F

Is the impedance of this device compatible with composite video? I believe that is nominally 75 ohms. I would snip the BNC connectors off and replace with RCA connectors. Looks pretty straight forward. Any problem with this adaption?

Asked by: Jauwn
You could exchange the BNCs for RCAs and get the same result.
Answered by: TomI
Date published: 2015-11-12
  • 2015-11-25T07:11CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_1
  • loc_en_US, sid_335-376, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational

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