1.37 — N FEMALE to RP-SMA MALE
Cable
1.37
End A
N FEMALE
$1.50
End B
RP-SMA MALE
$1.00
Specs Summary
1.37 — N FEMALE to RP-SMA MALE
✓ In stock • Ships next business day
| Length | Price | |
|---|---|---|
| 1 ft | $11.37 | |
| 6 ft | $12.82 |
Made in USA
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.
N Connector
Type N is a threaded RF connector rated from DC to 18 GHz with a durable weatherproof design, making it the preferred interface for outdoor antenna installations, cellular base stations, and commercial wireless infrastructure. Its larger size compared to SMA allows higher power handling and the threaded coupling resists vibration, making it suitable for mobile and fixed outdoor applications.
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.
Common Applications
This N and RP-SMA cable assembly is well suited for internal antenna leads in routers, smartphones, and compact IoT devices. The combination of reliable N and RP-SMA 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.
1.37 Signal Loss
Approximate attenuation at common RF frequencies.
| Frequency | Loss / 100 ft | Loss / ft |
|---|---|---|
| 100 MHz | 7.8 dB | 0.078 dB |
| 450 MHz | 16.5 dB | 0.165 dB |
| 900 MHz | 24 dB | 0.24 dB |
| 1.8 GHz | 35 dB | 0.35 dB |
| 2.4 GHz | 41 dB | 0.41 dB |
| 5.8 GHz | 67 dB | 0.67 dB |
Frequently Asked Questions
What is 1.37 coaxial cable used for?
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.
What is the signal loss of 1.37?
At 1800 MHz, 1.37 has approximately 35 dB of loss per 100 ft (0.35 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 N connector?
Type N is a threaded RF connector rated from DC to 18 GHz with a durable weatherproof design, making it the preferred interface for outdoor antenna installations, cellular base stations, and commercial wireless infrastructure. Its larger size compared to SMA allows higher power handling and the threaded coupling resists vibration, making it suitable for mobile and fixed outdoor applications.
