About Us

Our Story ...

Gem Electronics was founded in 1999 by principals who had been in the design and manufacturing of coaxial products since 1975. Gem was purchased by Jewell Instruments, LLC, in 2017. The acquisition complements Jewell's other division -- Triplett Test Equipment -- which provides test equipment for the security, IT, coal, and railroad industries.

Gem began as a manufacturer of standard coaxial connectors and adapters for the CATV, CCTV and general electronics marketplace. Similar to Jewell Instruments, the company adopted a problem-solving mentality as they heard and witnessed the Connectorization problems that were persistent in the CCTV market. Installers were experiencing signal failures consistently and at an unacceptable rate.

Gem's mission statement thus became one of solving these problems. They assisted the installer base in drastically reducing that failure rate by listening to their concerns and responded first by developing superior connectors including our Universal and UniCrimp BNC Connectors and Compression F, BNC and RCA Connectors. Next, they published a cable-connector-selector chart to be sure the proper connector was being used with the coax cable of choice. Finally, they developed training videos describing "Connector Fundamentals" and  "Precise Cable Assembly Procedures" to follow to guarantee a perfect termination every time. All of those reference videos can be found on this website.

Gem's success in the coaxial product field and the emergence of CCTV over UTP technology prompted Gem Electronics to enter into the supply of Baluns and Hubs that would provide the installer a system install that would win more contracts and increase profits substantially. A very informative video was produced titled "Balun Technology" (which is posted on this website) illustrates various system application options and the cost comparison between the UTP and coax system. You can also find a "distance calculator" to determine the length of UTP that can be run when simultaneously running video/power and data. This is a helpful tool when designing the most cost effective and versatile system.

As systems become more sophisticated, new challenges arise and Gem Electronics is the company that the industry now turns to for solutions. To answer those challenges we continue to develop additional problem solving products including:

  • Coax to IP Converters and Extenders
  • Diplexers
  • A CCTV Wireless Transmit/Receiver Kit that produces a ROCK SOLID PICTURE
  • HDcctv product line that is certified to HDcctv universal standards.

Today Gem Electronics offer Twist-On BNC connectors to HDcctv Cameras, all at potenzmittel kaufen superior quality and profit increasing costs.

Gem Electronics currently provides products to the most distinguished installers in North America through qualified and professional National/Regional/Local distributors.The best in the business.

This website contains all of the Gem product information in a very user friendly format and we are hopeful that you will come to view this website as your go to source for information.

If you cannot find the exact product that you require, please contact us for personalized assistance:

GEM Electronics
A Division of Jewell Instruments, LLC
850 Perimeter Road
Manchester, NH 03103



Training Videos

We offer a number of comprehensive training videos for our products. Some of the videos include:

  • Compression Cable Assembly
  • Crimp-Crimp Assembly
  • Crimp-On Assembly
  • EZ-On RJ45 Assembly
  • Standard RJ 45 Assembly
  • Twist-On Assembly
  • Uni-Crimp Assembly
  • RGB Cable Assembly
  • Coax Fundamentals
  • Balun Technology