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ONELINKMORE

onelinkmore BNC Male Crimp Connector BNC Q9 Connector 50 Ohm for Cable RG174, RG178, RG188, RG196, RG316 Coax Cable RF Coaxial Pack of 10

onelinkmore BNC Male Crimp Connector BNC Q9 Connector 50 Ohm for Cable RG174, RG178, RG188, RG196, RG316 Coax Cable RF Coaxial Pack of 10

$15.89 USD
$15.89 USD
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--- QUICK SPEC REFERENCE ---
Product: BNC Male Crimp Connector, 50 Ohm, for RG174 / RG178 / RG188 / RG196 / RG316
SKU: OL0047-10X
Connector Type: BNC Male (Q9)
Termination: Crimp
Body Material: Brass, Nickel Plated
Center Contact: Gold Plated (brass)
Impedance: 50 Ohm
Compatible Cables: RG174, RG178, RG188, RG196, RG316 (thin cables, approximately 2.8mm OD)
Quantity: 10 connectors per pack
Price: $15.89
In Stock: Yes
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This BNC male crimp connector is sized for thin coaxial cables — RG174, RG178, RG188, RG196, and RG316 — all of which have outer diameters in the approximately 2.5–2.8mm range. BNC connectors are the standard for oscilloscope probes, signal generator outputs, RF test equipment, SDR receiver cables, CCTV coaxial patch cables, and a wide range of other RF and video applications. The crimp termination method provides a mechanically consistent and vibration-resistant connection without the soldering skill required by solder-type BNC connectors.

RG316 and RG174 are the most commonly terminated cables in this size range. RG316 (double-shielded, PTFE jacket) is used for high-performance laboratory pigtails, military applications, and any installation requiring low loss and high shielding effectiveness. RG174 (single-shielded, PVC jacket) is used for consumer-grade antenna leads, GPS cables, and SDR antenna pigtails where cost is a consideration over maximum RF performance. This connector works with both, as well as the less common RG178, RG188, and RG196 variants that share similar outer dimensions.

Cable size compatibility is critical for crimp BNC connectors. This connector is sized for cables with approximately 2.5–2.8mm outer diameter. It is NOT compatible with RG58 (approximately 5mm OD) or RG8X (approximately 6mm OD). A coaxial crimping tool with appropriate hex dies for the cable's outer conductor diameter is required — typically a 0.100" (2.54mm) hex die for the center pin crimp and a separate die for the outer ferrule. Verify die sizes with the connector specifications before purchasing tooling.

Frequently Asked Questions

Q: What is the difference between RG174 and RG316, and which should I use?

RG174 has a solid copper center conductor, polyethylene dielectric, and PVC outer jacket. It is economical and suitable for general-purpose antenna cables, GPS pigtails, and SDR antenna leads where cost matters. RG316 has a silver-plated copper center conductor, PTFE dielectric, and PTFE outer jacket — this gives it lower loss per meter, better high-frequency performance, wider temperature range (-65°C to +200°C), and higher shielding from its double braid. For laboratory pigtails, high-frequency work, and any installation where superior performance justifies higher cost, RG316 is the better choice. For simple consumer antenna connections, RG174 is adequate.

Q: Can I use these BNC connectors on my oscilloscope probe cables?

Yes, if the probe cable uses RG174 or similar thin coaxial cable. Most passive oscilloscope probes (1x and 10x) use RG174-diameter coaxial cable in the probe body. The BNC male connector at the oscilloscope end can be replaced with this crimp connector if damaged or if building a custom probe cable. The BNC male plug connects to the oscilloscope's BNC female channel input via the standard quarter-turn bayonet lock.

Q: What crimping tool and dies are needed?

For BNC crimp connectors on RG174/RG316 thin cables, you need a coaxial cable crimping tool with dies for the center pin (typically 0.068" hex for small center pins) and the outer ferrule (typically 0.100" hex for RG174/RG316 outer conductors). Universal multi-die crimp tools (such as those from Klein Tools or IDEAL) that include interchangeable dies covering multiple cable sizes are practical for technicians working across various cable diameters. Verify the exact die sizes specified for this connector model before purchasing tooling.

Q: Is this connector suitable for SDR antenna pigtails?

Yes. RTL-SDR pigtail cables connecting between the dongle's SMA port and a BNC-terminated antenna or T-connector use RG174 or RG316 cable with BNC connectors. These crimp BNC male connectors are the correct termination for building or repairing SDR antenna pigtails. A BNC female-to-SMA male adapter (not included) would then be used to connect the BNC-terminated pigtail to the RTL-SDR's SMA female port.

Q: Why does the pack include 10 connectors?

Cable assembly production and repair work frequently requires multiple connectors. A 10-pack covers 5 complete two-connector cable assemblies, or provides a production stock for ongoing cable builds. In test bench environments where custom cable lengths are regularly fabricated, a 10-pack avoids the cost and delay of ordering single quantities repeatedly. Crimp connectors are also non-reusable — if a crimp is made incorrectly, the connector must be discarded and replaced, making spare connectors essential for reliable production work.

Q: What does "Q9" mean in the product name?

Q9 is the Chinese standard designation for the BNC connector, derived from the historical Chinese military and industrial classification system for electronic components. In international RF connector terminology, Q9 and BNC refer to the same connector standard — they are synonymous. You will see Q9 used as an alternative name for BNC in Chinese-manufactured test equipment (oscilloscopes, signal generators) and accessories. A Q9 connector mates directly with any standard BNC connector.

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