SR connector

An SR connector, or CP connector (from Russian: Соединитель Радиочастотный, radio frequency connector) is a type of Russian made RF connector for coaxial cables.[1] Based on the American BNC connector, the SR connector differs slightly in dimensions due to discrepancies in imperial to metric conversion, though with some force they can still be mated.[2] There are however types of SR connectors that do not resemble their American counterpart.

Most SR connectors are variants of SR-50 (50 Ω) or SR-75 (75 Ω) versions, with the SR-75 typically having a thinner center pin. They often resemble C connectors in shape, and have threaded inserts similar to N connectors.[2] Further numerical suffixes denote specific kinds of connectors, for instance the CP 75-164 is a much larger high power connector, designed for upwards of 3000W, with a similar appearance to an N or UHF type. The various letters after the number refer to the dielectric material used.

Below is a breakdown of the various suffixes used in the order they would appear:

Symbol Meaning Details
Г (G) Hermetically sealed From Russian Герметичный
50 or 75 Design impedance of the connector in ohms
### Three numeral connector type designation i.e. CP-75-164
Ф (F) or П (P) Dielectric material (either фторопласт (PTFE/Teflon)

or полиэтилен (Polyethylene))
В (V) Meets GOST standardization requirements From Russian Bсеклиматическое

исполнение по ГОСТ В 20.39.404-81

See also

References
  1. "SR50-811PV - Wires, connectors | Russian Electronics company". russian-electronics.com. Archived from the original on 2021-01-26. Retrieved 2021-01-26.
  2. "Russian Coax Connectors". www.nd2x.net. Archived from the original on 21 September 2015. Retrieved 2016-01-28.CS1 maint: unfit URL (link)
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