Cable
RG142
End A
N FEMALE
End B
SO239 UHF Female
Specs Summary
100 ft RG142 — N FEMALE to SO239 UHF Female
RG142 cable assembly, 100 feet, with N FEMALE and SO239 UHF Female connectors. Hand-assembled, tested, and ships free within the US.
100 ft — N FEMALE / SO239 UHF Female
$251.13
Free shipping • In stock
Other lengths:
Signal Loss — 100 ft
Approximate insertion loss for this 100 ft RG142 assembly at common RF frequencies.
| Frequency | Loss / 100 ft | Loss — 100 ft |
|---|---|---|
| 100 MHz | 3.8 dB | 3.8 dB |
| 450 MHz | 8.5 dB | 8.5 dB |
| 900 MHz | 12.5 dB | 12.5 dB |
| 1.8 GHz | 18.5 dB | 18.5 dB |
| 2.4 GHz | 21.5 dB | 21.5 dB |
| 5.8 GHz | 37 dB | 37 dB |
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.
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.
UHF Connector
The UHF connector (also known as PL-259 male / SO-239 female) is a large, low-cost RF connector designed in the 1930s for HF and VHF frequencies. Despite its name, its practical usable range is below 300 MHz due to its non-constant impedance design. It remains extremely popular in amateur radio (HF through VHF), CB radio, and marine radio applications.
Common Applications
This N and UHF cable assembly is well suited for high-temperature and high-power military or aerospace RF assemblies. The combination of reliable N and UHF 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.
Frequently Asked Questions
Is this cable hand-assembled in the USA?
Yes. Every CoaxRF cable assembly is hand-terminated and continuity tested at our US facility before shipping. We do not drop-ship pre-made cables from overseas — each cable is built to order.
Can I order a different length than 100 ft?
Yes. This page is for the 100 ft assembly. Use the length buttons above to select a different standard length, or use the Cable Builder for any custom length.
How much signal loss will I see with this 100 ft cable?
At 1800 MHz, RG142 loses approximately 18.5 dB per 100 ft. This 100 ft assembly will have roughly 18.5 dB of insertion loss at that frequency. See the signal loss table for all frequency points.
What is the maximum frequency for this assembly?
This assembly is rated DC – 300 MHz. The effective frequency limit is set by the lowest-rated component — either the cable or one of the connectors. Both N FEMALE and SO239 UHF Female connectors must be within spec at your target frequency.
What is your return policy?
We accept returns within 30 days of delivery. Custom-length cables are accepted as long as they are in original condition. Contact us and we will provide a prepaid return label at no charge.
