RG400 cable

Cable

RG400

RP-SMA MALE

End A

RP-SMA MALE

$1.00

RP-TNC MALE

End B

RP-TNC MALE

$1.00

50 Ohm DC – 6 GHz

RG400 — RP-SMA MALE to RP-TNC MALE

Custom RG400 cable assembly with RP-SMA MALE and RP-TNC MALE connectors. Every cable is hand-assembled, tested, and ships free.

Length Price
1 ft $10.99
6 ft $25.99
25 ft $82.99
50 ft $157.99
100 ft $307.99
250 ft $757.99
Need a different length? Use the Cable Builder

Specs Summary

CableRG400
Diameter.195 INCH
Impedance50 Ohm
FrequencyDC – 6 GHz
Velocity Factor70%
RP-SMA MALE InterfaceReverse polarity SMA threaded
RP-TNC MALE InterfaceReverse polarity TNC threaded

About This Assembly

RG400 Cable

RG-400 is a double-shielded, silver-plated PTFE coaxial cable built to MIL-C-17 specifications with a 0.195" outer diameter. Its construction mirrors RG-142 but with two braid shields for even greater shielding effectiveness. The standard cable for military and avionics applications requiring certified materials and traceable performance.

RP-SMA Connector

RP-SMA (Reverse Polarity SMA) uses the SMA threaded coupling mechanism but with the male/female pin convention reversed — the jack has a pin and the plug has a socket. Originally standardized to prevent connection of uncertified antennas to consumer WiFi equipment, RP-SMA is now the dominant connector on commercial WiFi routers, access points, and 2.4/5 GHz antennas.

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.

Common Applications

This RP-SMA and RP-TNC cable assembly is well suited for military-spec RF interconnects and avionics signal routing. The combination of reliable RP-SMA and RP-TNC 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 RG400 Configurations

RP-SMA MALE to RP-TNC MALE on Other Cables