RGU178 cable

Cable

RGU178

PL259 UHF Male

End A

PL259 UHF Male

$3.00

RP-SMA FEMALE

End B

RP-SMA FEMALE

$1.00

50 Ohm DC – 300 MHz

RGU178 — PL259 UHF Male to RP-SMA FEMALE

Custom RGU178 cable assembly with PL259 UHF Male and RP-SMA FEMALE connectors. Every cable is hand-assembled, tested, and ships free.

Length Price
1 ft $9.99
6 ft $14.49
25 ft $31.59
50 ft $54.09
100 ft $99.09
Need a different length? Use the Cable Builder

Specs Summary

CableRGU178
Diameter.06 INCH
Impedance50 Ohm
FrequencyDC – 300 MHz
Velocity Factor70%
PL259 UHF Male InterfaceUHF threaded (PL-259 / SO-239)
RP-SMA FEMALE InterfaceReverse polarity SMA threaded

About This Assembly

RGU178 Cable

RGU-178 is an ultra-flexible variant of the RG-178 coaxial cable, retaining the 1.75mm form factor while featuring a stranded center conductor and flexible jacket for repeated bending. It excels in applications requiring both a small footprint and mechanical durability, such as wearable devices, rotating joints, and flexible test leads.

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.

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 RP-SMA and UHF cable assembly is well suited for flexible pigtails for compact modules and repeated-bend applications. The combination of reliable RP-SMA 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.

Other RGU178 Configurations

PL259 UHF Male to RP-SMA FEMALE on Other Cables