RFC240 — RP-SMA MALE to TNC MALE
Cable
RFC240
End A
RP-SMA MALE
$1.00
End B
TNC MALE
$1.00
Specs Summary
RFC240 — RP-SMA MALE to TNC MALE
Made in USA
Assembled and tested in-house
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About This Assembly
Specs Summary
RFC240 Cable
RFC-240 is a 0.240" 50-ohm low-loss coaxial cable delivering performance comparable to LMR-240 at a more accessible price, making it popular for installers who need reliable medium-distance cable runs. Well suited for cellular repeater installations, point-to-point wireless links, and access point feedlines up to 75 feet.
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.
TNC Connector
TNC (Threaded Neill–Concelman) is the threaded version of BNC, offering improved performance up to 11 GHz and better vibration resistance through its screw coupling. It is commonly used in mobile radio antennas, avionics, and outdoor installations where BNC's bayonet lock would not provide sufficient mechanical security.
Common Applications
This RP-SMA and TNC cable assembly is well suited for medium-length cellular and WiFi antenna runs at a value price point. The combination of reliable RP-SMA and 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.
RFC240 Signal Loss
Approximate attenuation at common RF frequencies.
| Frequency | Loss / 100 ft | Loss / ft |
|---|---|---|
| 100 MHz | 2.5 dB | 0.025 dB |
| 450 MHz | 5.4 dB | 0.054 dB |
| 900 MHz | 7.8 dB | 0.078 dB |
| 1.8 GHz | 11.3 dB | 0.113 dB |
| 2.4 GHz | 13.1 dB | 0.131 dB |
| 5.8 GHz | 21.5 dB | 0.215 dB |
Frequently Asked Questions
What is RFC240 coaxial cable used for?
RFC-240 is a 0.240" 50-ohm low-loss coaxial cable delivering performance comparable to LMR-240 at a more accessible price, making it popular for installers who need reliable medium-distance cable runs. Well suited for cellular repeater installations, point-to-point wireless links, and access point feedlines up to 75 feet.
What is the signal loss of RFC240?
At 1800 MHz, RFC240 has approximately 11.3 dB of loss per 100 ft (0.113 dB/ft).
What frequency range does this assembly support?
This assembly is rated DC – 6 GHz, limited by the lowest-rated component across the cable and connectors.
What is a 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.
