Cable
RG400
End A
MCX MALE
$1.00
End B
SMA FEMALE
$1.00
RG400 — MCX MALE to SMA FEMALE
Custom RG400 cable assembly with MCX MALE and SMA FEMALE connectors. Every cable is hand-assembled, tested, and ships free.
| Length | Price | |
|---|---|---|
| 1 ft | $16.98 | |
| 6 ft | $31.98 | |
| 25 ft | $88.98 | |
| 50 ft | $163.98 | |
| 100 ft | $313.98 | |
| 250 ft | $763.98 |
Specs Summary
About This Assembly
RG400 Cable
RG-400 is a double-shielded, silver-plated PTFE coaxial cable built to MIL-C-17 specifications with a 0.195" outer diameter. Its construction mirrors RG-142 but with two braid shields for even greater shielding effectiveness. The standard cable for military and avionics applications requiring certified materials and traceable performance.
MCX Connector
MCX (Micro Coaxial) is a snap-on RF connector approximately 30% smaller than SMB, designed for compact equipment requiring frequent connections in a small footprint. Rated to 6 GHz, MCX is commonly used in GPS receivers, automotive telematics modules, handheld communication devices, and compact measurement instruments.
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 MCX and SMA cable assembly is well suited for military-spec RF interconnects and avionics signal routing. The combination of reliable MCX 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.
RG400 Signal Loss
Approximate attenuation at common RF frequencies.
| Frequency | Loss / 100 ft | Loss / ft |
|---|---|---|
| 100 MHz | 3.5 dB | 0.035 dB |
| 450 MHz | 7.8 dB | 0.078 dB |
| 900 MHz | 11.5 dB | 0.115 dB |
| 1.8 GHz | 17 dB | 0.17 dB |
| 2.4 GHz | 20 dB | 0.2 dB |
| 5.8 GHz | 34 dB | 0.34 dB |
Frequently Asked Questions
What is RG400 coaxial cable used for?
RG-400 is a double-shielded, silver-plated PTFE coaxial cable built to MIL-C-17 specifications with a 0.195" outer diameter. Its construction mirrors RG-142 but with two braid shields for even greater shielding effectiveness. The standard cable for military and avionics applications requiring certified materials and traceable performance.
What is the signal loss of RG400?
At 1800 MHz, RG400 has approximately 17 dB of loss per 100 ft (0.17 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 MCX connector?
MCX (Micro Coaxial) is a snap-on RF connector approximately 30% smaller than SMB, designed for compact equipment requiring frequent connections in a small footprint. Rated to 6 GHz, MCX is commonly used in GPS receivers, automotive telematics modules, handheld communication devices, and compact measurement instruments.
