Cable
RG142
End A
RP-SMA MALE
$1.00
End B
SMA MALE
$1.00
RG142 — RP-SMA MALE to SMA MALE
Custom RG142 cable assembly with RP-SMA MALE and SMA MALE connectors. Every cable is hand-assembled, tested, and ships free.
| Length | Price | |
|---|---|---|
| 1 ft | $15.98 | |
| 6 ft | $27.73 | |
| 25 ft | $72.38 | |
| 50 ft | $131.13 | |
| 100 ft | $248.63 | |
| 250 ft | $601.13 |
Specs Summary
About This Assembly
RG142 Cable
RG-142 is a double-shielded 50-ohm PTFE coaxial cable rated for operation from cryogenic temperatures up to +200°C with a 0.195" outer diameter. Its dual-shield construction provides excellent EMI rejection while the PTFE dielectric ensures stable electrical performance across a wide frequency range. The preferred choice for military, aerospace, and high-power RF 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.
SMA Connector
SMA (SubMiniature version A) is the most widely used RF connector in the industry, offering a threaded interface that provides a secure, low-reflection connection from DC to 18 GHz. Its compact size, 50-ohm impedance, and broad frequency range make it the default choice for WiFi equipment, software-defined radios, cellular antennas, GPS receivers, and RF test instruments.
Common Applications
This RP-SMA and SMA cable assembly is well suited for high-temperature and high-power military or aerospace RF assemblies. The combination of reliable RP-SMA and 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.
RG142 Signal Loss
Approximate attenuation at common RF frequencies.
| Frequency | Loss / 100 ft | Loss / ft |
|---|---|---|
| 100 MHz | 3.8 dB | 0.038 dB |
| 450 MHz | 8.5 dB | 0.085 dB |
| 900 MHz | 12.5 dB | 0.125 dB |
| 1.8 GHz | 18.5 dB | 0.185 dB |
| 2.4 GHz | 21.5 dB | 0.215 dB |
| 5.8 GHz | 37 dB | 0.37 dB |
Frequently Asked Questions
What is RG142 coaxial cable used for?
RG-142 is a double-shielded 50-ohm PTFE coaxial cable rated for operation from cryogenic temperatures up to +200°C with a 0.195" outer diameter. Its dual-shield construction provides excellent EMI rejection while the PTFE dielectric ensures stable electrical performance across a wide frequency range. The preferred choice for military, aerospace, and high-power RF applications.
What is the signal loss of RG142?
At 1800 MHz, RG142 has approximately 18.5 dB of loss per 100 ft (0.185 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.
