Cable
RGU178
End A
RP-SMA MALE
$1.00
End B
RP-TNC MALE
$1.00
RGU178 — RP-SMA MALE to RP-TNC MALE
Custom RGU178 cable assembly with RP-SMA MALE and RP-TNC MALE connectors. Every cable is hand-assembled, tested, and ships free.
| Length | Price | |
|---|---|---|
| 1 ft | $13.98 | |
| 6 ft | $18.48 | |
| 25 ft | $35.58 | |
| 50 ft | $58.08 | |
| 100 ft | $103.08 |
Specs Summary
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.
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.
RP-TNC Connector
RP-TNC (Reverse Polarity TNC) uses the TNC threaded shell with reversed pin conventions, similar to RP-SMA. It is used on some commercial WiFi access points and outdoor CPE antennas, particularly in older Cisco and Linksys equipment, and offers better vibration resistance than RP-SMA in demanding outdoor environments.
Common Applications
This RP-SMA and RP-TNC cable assembly is well suited for flexible pigtails for compact modules and repeated-bend applications. The combination of reliable RP-SMA and RP-TNC 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.
RGU178 Signal Loss
Approximate attenuation at common RF frequencies.
| Frequency | Loss / 100 ft | Loss / ft |
|---|---|---|
| 100 MHz | 9 dB | 0.09 dB |
| 450 MHz | 19.5 dB | 0.195 dB |
| 900 MHz | 28.5 dB | 0.285 dB |
| 1.8 GHz | 41 dB | 0.41 dB |
| 2.4 GHz | 48 dB | 0.48 dB |
| 5.8 GHz | 78 dB | 0.78 dB |
Frequently Asked Questions
What is RGU178 coaxial cable used for?
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.
What is the signal loss of RGU178?
At 1800 MHz, RGU178 has approximately 41 dB of loss per 100 ft (0.41 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.
