Diamond C101‑3/8C Antenna Mount Cable Assembly 6.5 ft Low‑Loss RG‑316 PTFE Coax with 3/8C Terminals and Mini‑UHF Connector for Mobile HF/VHF/UHF Antenna Mounts

The Diamond C101‑3/8C Antenna Mount Cable Assembly is a specialized RF cable solution designed as a replacement or upgrade for mobile antenna mounts that use a 3/8″‑24 threaded mount base, such as the Diamond K400‑3/8C trunk‑ or hatchback‑style mount. It provides approximately 6.5 feet of flexible, low‑loss RG‑316 PTFE coaxial cable that maintains consistent 50 ohm characteristic impedance through VHF and UHF bands while remaining pliable enough to route easily through tight bends, vehicle body panels, or remote head locations. At the heart of this assembly is RG‑316 Teflon cable, known for its high‑quality insulation, heat resistance, and low attenuation at RF frequencies. This makes the C101‑3/8C ideal for mobile communications setups where reliable signal transmission between the antenna base and feed line is important for clear transmit and receive performance. Rather than using a standard SO‑239 mount interface like many other cable assemblies, the C101‑3/8C is tailored specifically for 3/8C terminal wiring at the antenna mount itself, providing a neat and direct connection without the need for cumbersome adapters on the mount side. The cable terminates in a mini‑UHF connector on the opposite end, making it compatible with standard PL‑259 adapter leads or other coax assemblies that transition to your transceiver’s antenna port. This mini‑UHF termination and the inherent flexibility of the cable allow you to conveniently route the line through vehicle structures or tight spaces without significant signal degradation or physical stress. This assembly is particularly useful if you are replacing the original cable on a 3/8‑mount antenna system, updating an older installation, or building a custom mobile antenna setup that requires a rugged, reliable coax feed. Its design helps simplify installation while maintaining the electrical performance needed for effective communications across a wide range of mobile frequency bands. Whether you are a radio amateur, mobile technician, or public safety operator, the Diamond C101‑3/8C provides a dependable and professional‑grade cable assembly that integrates seamlessly with 3/8‑24 threaded antenna mounts and enhances the overall performance and reliability of your mobile antenna system.

• Replacement cable assembly specifically engineered for 3/8C mobile antenna mounts such as the Diamond K400‑3/8C, providing approximately 6.5 feet of flexible, low‑loss RG‑316 PTFE coax to maintain strong RF signal integrity through vehicle body panels and installs
• Features 3/8C wiring terminals on the mount end for direct attachment to threaded antenna bases while the mini‑UHF connector on the cable’s radio end simplifies routing and connects to included or separate PL‑259 adapters as needed
• The use of RG‑316 Mil‑Spec Teflon coax ensures reliable 50 ohm impedance performance across VHF and UHF bands, supporting mobile amateur, CB, and general communications installations without unnecessary signal loss
• Perfect for remote head and trunk mount installations where routing through tight cutouts and body seals is required, this cable assembly balances flexibility and durability to make professional‑grade mobile antenna setups clean and efficient
• Ideal for technicians, amateur radio operators, and mobile communicators upgrading or replacing antenna feed lines on 3/8″‑24 mounts, this assembly reduces installation complexity and enhances overall system connectivity