1.37 cable

Cable

1.37

RP-TNC MALE

End A

RP-TNC MALE

$1.00

SO239 UHF Female

End B

SO239 UHF Female

$3.00

50 Ohm DC – 300 MHz

1.37 — RP-TNC MALE to SO239 UHF Female

Custom 1.37 cable assembly with RP-TNC MALE and SO239 UHF Female connectors. Every cable is hand-assembled, tested, and ships free.

Length Price
1 ft $7.20
6 ft $8.80
Need a different length? Use the Cable Builder

Specs Summary

Cable1.37
Diameter1.37MM
Impedance50 Ohm
FrequencyDC – 300 MHz
Velocity Factor70%
RP-TNC MALE InterfaceReverse polarity TNC threaded
SO239 UHF Female InterfaceUHF threaded (PL-259 / SO-239)

About This Assembly

1.37 Cable

1.37mm coaxial cable is a miniature 50-ohm cable slightly larger than 1.13mm, balancing compact size with improved power handling and lower signal loss. Used for internal antenna leads in smartphones, routers, and IoT devices where the 1.13mm cable would be too lossy but space constraints still prohibit larger coax.

RP-TNC Connector

RP-TNC (Reverse Polarity TNC) uses the TNC threaded shell with reversed pin conventions, similar to RP-SMA. It is used on some commercial WiFi access points and outdoor CPE antennas, particularly in older Cisco and Linksys equipment, and offers better vibration resistance than RP-SMA in demanding outdoor environments.

UHF Connector

The UHF connector (also known as PL-259 male / SO-239 female) is a large, low-cost RF connector designed in the 1930s for HF and VHF frequencies. Despite its name, its practical usable range is below 300 MHz due to its non-constant impedance design. It remains extremely popular in amateur radio (HF through VHF), CB radio, and marine radio applications.

Common Applications

This RP-TNC and UHF cable assembly is well suited for internal antenna leads in routers, smartphones, and compact IoT devices. The combination of reliable RP-TNC and UHF connectors and custom-cut cable length makes it a practical choice for both field installations and bench setups. Every assembly is hand-terminated, continuity tested, and ships free within the USA.

Other 1.37 Configurations

RP-TNC MALE to SO239 UHF Female on Other Cables