RG58 — QMA MALE to SMA MALE
Cable
RG58
End A
QMA MALE
$3.50
End B
SMA MALE
$1.00
Specs Summary
RG58 — QMA MALE to SMA MALE
Made in USA
Assembled and tested in-house
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About This Assembly
Specs Summary
RG58 Cable
RG-58 is a classic flexible 50-ohm coaxial cable with a 0.195" outer diameter, offering an excellent balance of flexibility and performance at a low cost. Its braided shield provides good EMI rejection and its thin profile makes it easy to route through tight spaces. Common applications include amateur radio, CB radio, networking equipment connections, and general-purpose RF jumpers up to 25 feet.
QMA Connector
QMA is a quick-mate RF connector that provides the electrical performance of Type N up to 18 GHz with a faster quarter-turn locking mechanism instead of full threading. It is widely deployed in cellular base station cabinets, DAS installations, and equipment racks where rapid cable changes are required without sacrificing electrical performance.
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 QMA and SMA cable assembly is well suited for amateur radio, CB radio, and general-purpose RF patch cables. The combination of reliable QMA 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.
RG58 Signal Loss
Approximate attenuation at common RF frequencies.
| Frequency | Loss / 100 ft | Loss / ft |
|---|---|---|
| 100 MHz | 4.3 dB | 0.043 dB |
| 450 MHz | 9.8 dB | 0.098 dB |
| 900 MHz | 14.3 dB | 0.143 dB |
| 1.8 GHz | 21.5 dB | 0.215 dB |
| 2.4 GHz | 25.5 dB | 0.255 dB |
| 5.8 GHz | 44 dB | 0.44 dB |
Frequently Asked Questions
What is RG58 coaxial cable used for?
RG-58 is a classic flexible 50-ohm coaxial cable with a 0.195" outer diameter, offering an excellent balance of flexibility and performance at a low cost. Its braided shield provides good EMI rejection and its thin profile makes it easy to route through tight spaces. Common applications include amateur radio, CB radio, networking equipment connections, and general-purpose RF jumpers up to 25 feet.
What is the signal loss of RG58?
At 1800 MHz, RG58 has approximately 21.5 dB of loss per 100 ft (0.215 dB/ft).
What frequency range does this assembly support?
This assembly is rated DC – 1 GHz, limited by the lowest-rated component across the cable and connectors.
What is a QMA connector?
QMA is a quick-mate RF connector that provides the electrical performance of Type N up to 18 GHz with a faster quarter-turn locking mechanism instead of full threading. It is widely deployed in cellular base station cabinets, DAS installations, and equipment racks where rapid cable changes are required without sacrificing electrical performance.
