Compression Connectors Demystified

by Ralph Parrett
Liberty AV Solutions' Director of Quality & Technical Services


Liberty Introduces our Universal C-Tec2 (ConnecTec2) brand of Compression Connectors

We have a new design that features a ferrule-less connector for easy termination. This new design is much more forgiving of different company's cable manufacturing tolerances then our previous ConnecTec™ and CoaxMaster™ lines of connectors. Whether your cable is Liberty, Belden, Commscope, Coleman, General, or No-Name from who-knows-where - No problem! This new design will fit the cable and slide on much easier.

The biggest advantage of the ferrule-less design is the cable fit. The inner dimensions are very forgiving of cable deviations from different constructions. This makes these connectors Universal for many standard cable constructions. Single braid base band coaxial cable, dual foil and braid shield, Triple Foil-Braid-Foil shield, and everyone's favorite - Foil-Braid-Foil-Braid Quad shield cable are all served by one connector. This has the secondary advantage of reducing the number of connectors the installer needs. One Connector can replace up to 5 of the old ConnecTec designs. An example of this is CM-RG59M-RCA. It replaces CM-RG59C-RCA, CM-RG59U-RCA, CM-RG59PC-RCA, and CM-RG59P-RCA. This means an installer needs only one connector for all his RG59 cables instead of the previous four different part numbers. We maintained the same Tooling so there is no need to re-tool.

There are some disadvantages to a ferrule-less design. One is sacrificing a little performance. A ferrule-less design does not perform as well as a ferruled design. However you have to look at the limiting factor in the circuit before you say "No way!". If a ferruled connector has an SRL of -27dB @ 1000 MHz and the ferrule-less replacement has an SRL of -20dB @ 1000 MHz and the cable has an SRL of -17dB @ 1000 MHz - your weakest link is still the cable and there is no benefit to the higher performing connector. Another is the pull strength. The industry standard is 40 Lbs. Our previous ConnecTec line was warranted for 80Lbs+. This new ferrule-less design meets and exceeds the standard of 40 Lbs. In our testing we averaged 75 lbs + and we are very happy with those results. For those customers who must have the performance - No problem! We're going to keep some of the older products for those who must have them.

Introducing the players!

CM-RG6L-series with RCA, BNC, and F formats. This connector has an Orange colored silicone ring as an identifier. This is a Universal RG6 Non-Plenum Connector and will fit from single braid shield baseband video cable all the way up to Quad shield cables. It will also fit plenum cables too - from Dual Shield plenum all the way to Quad shield plenum.

CM-RG6M-series with RCA, BNC, and F and European IEC PAL Male and Female. This connector has a Purple colored silicone ring as an identifier. This is a Universal RG6 Plenum Connector and will fit from single braid shield baseband video cable all the way up to Quad shield cables. It will also fit non-plenum cables too - from single braid Shield to Tri-shield formats.

CM-RG59M-series with RCA, BNC, F, and European IEC PAL Male and Female. This connector has a Yellow colored silicone ring as an identifier. This is a Universal RG59 Connector and will fit all Plenum and Non-Plenum formats from single braid shield baseband video cable all the way up to Quad shield cables. It does not fit Head End Quad shield RG59 Silver Plated cables though. Those cables have two 90% plus coverage