RG402 — RP-SMA FEMALE to SMA FEMALE
Cable
RG402
End A
RP-SMA FEMALE
$1.00
End B
SMA FEMALE
$1.00
Specs Summary
RG402 — RP-SMA FEMALE to SMA FEMALE
Made in USA
Assembled and tested in-house
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About This Assembly
Specs Summary
RG402 Cable
RG-402 (UT-141) is a 0.141" semi-rigid coaxial cable with a solid copper outer conductor that holds its shape once formed. Its low loss and excellent phase stability make it the standard interconnect in microwave test setups, network analyzers, and laboratory bench assemblies. Ideal wherever cable position is fixed and mechanical rigidity is advantageous.
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 microwave test bench assemblies, network analyzer connections, and lab setups. 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.
RG402 Signal Loss
Approximate attenuation at common RF frequencies.
| Frequency | Loss / 100 ft | Loss / ft |
|---|---|---|
| 100 MHz | 3.5 dB | 0.035 dB |
| 450 MHz | 7.5 dB | 0.075 dB |
| 900 MHz | 10.8 dB | 0.108 dB |
| 1.8 GHz | 15.5 dB | 0.155 dB |
| 2.4 GHz | 18.5 dB | 0.185 dB |
| 5.8 GHz | 30 dB | 0.3 dB |
Frequently Asked Questions
What is RG402 coaxial cable used for?
RG-402 (UT-141) is a 0.141" semi-rigid coaxial cable with a solid copper outer conductor that holds its shape once formed. Its low loss and excellent phase stability make it the standard interconnect in microwave test setups, network analyzers, and laboratory bench assemblies. Ideal wherever cable position is fixed and mechanical rigidity is advantageous.
What is the signal loss of RG402?
At 1800 MHz, RG402 has approximately 15.5 dB of loss per 100 ft (0.155 dB/ft).
What frequency range does this assembly support?
This assembly is rated DC – 18 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.
