The Diamond SX240C cross needle SWR and power meter is a commercial-grade, high-precision RF diagnostic instrument engineered to monitor transmission line efficiency and absolute output tracking across multi-band radio base stations. Utilizing an advanced dual-needle cross matrix configuration, this premium instrument displays forward power, reflected power, and standing wave ratios simultaneously without requiring manual calibration adjustments. It serves as an essential logistics procurement component for critical communication hubs, maritime emergency stations, engineering validation labs, and high-volume B2B radiocommunication hardware wholesale distribution networks looking to supply elite station monitoring gear.
The internal architecture of the SX240C features dual separate internal sensors covering a wide spectrum configuration: Sensor 1 targets the HF range from 1.8 to 54 MHz, while Sensor 2 manages the VHF/UHF bands from 140 to 470 MHz. Built to handle heavy duty cycles from low-power QRP field kits up to commercial high-output legal limit amplifiers, the device incorporates selectable power scaling metrics at 30, 300, and a massive 3000 Watts maximum power. Accurate calculation of system SWR is activated with a minimum input power requirement of just 3 Watts, ensuring precise line evaluations even during low-drive tuning sequences.
Housed in a ruggedized, fully shielded industrial metal casing measuring 170 (W) x 115 (H) x 150 (D) mm and weighing a stable 1350 g, the unit minimizes bench movement and eliminates stray RF ingress on busy work surfaces. The rear terminal interface is equipped with heavy-duty, low-loss UHF Female (SO-239) connectors across both sensor lines, preserving a uniform 50 Ω characteristic impedance layout. Driven by a standard 11–15 V DC power supply line for optional meter illumination, this instrument delivers a reliable full-scale accuracy rating of ±10%, providing immediate technical system alignment, effortless rapid installation, and absolute readiness for multi-shift deployment.
| Technical Specification Parameter | Specifications |
|---|---|
| Product Brand Designation | Diamond Antenna (Original Factory Diagnostic Line) |
| Hardware Model Designation | SX240C / SX-240C (Premium Cross-Needle Series) |
| Primary Component Classification | Dual-Sensor Coaxial Standing Wave Ratio & RF Wattmeter |
| Operational Frequencies Coverage | HF/50MHz: 1.8–54 MHz | VHF/UHF: 140–470 MHz Dual Matrix |
| Selectable Power Measuring Ranges | 30 Watts / 300 Watts / 3000 Watts Full Scale Ranges |
| Maximum Load Power Capacity | 3000 Watts (3 kW) Maximum Continuous Peak Power Rating |
| Minimum Drive for SWR Calculation | 3 Watts Minimum RF Carrier Input |
| Primary Telemetry Functions | Forward RF Power, Reflected RF Power, and Direct Line SWR Intersection |
| System Calibration Accuracy | ±10% Full-Scale Calibration Precision |
| System Characteristic Impedance | 50 Ohms Nominal Line Impedance Match |
| Primary RF Interface Ports | 4x UHF Female (SO-239) Chassis Sockets (Divided over S1 and S2 Sensor Loops) |
| Auxiliary Meter Power Input | 11V to 15V DC Regulated Source Line (For Internal Panel Lighting) |
| Total Physical Frame Dimensions | 170 mm (Width) x 115 mm (Height) x 150 mm (Depth) |
| Net Operational Component Mass | 1350 grams Balanced Shielded Metal Enclosure Weight |
| Verified Hardware Compatibility Scope | HF/VHF/UHF all-mode mobile base transceivers, high-output linear amplifiers, 50-ohm dummy loads, PL-259 jumper links, and multi-band antenna systems |
| Primary Fleet Utility Purpose | Turnkey fixed-base station telemetry tracking, real-time antenna matching verification, amplifier stage outfitting, and downstream transceiver asset mismatch protection |
