The DIAMOND SD330 – Length:Approx. 1.85m / Weight:Approx. 1.1kg Frequency:3.5-30MHz / Max. power rating:200W (SSB) Impedance: 50Ω / SWR:Less than 2.0 Connector:M-P / Type:1/4 wave center loading Power supply voltage & current:DC 12V 100mA Up-down time:aprrox. 50 sec.(3.5→30MHz), aprrox. 20 sec. (7→30MHz) is a commercial-grade, motorized variable-frequency HF mobile station antenna precision-engineered to deliver secure voice synchronization, flexible multi-band spectrum tracking, and robust deployment readiness across active transport networks. Manufactured by Diamond Antenna, an international standard in elite RF hardware, this high-integrity center-loaded whip overhauls restrictive legacy single-band hardware setups. By integrating an internal remote-controlled motor drive to adjust resonance instantly across changing target zones, it serves as an essential operational procurement asset for tactical emergency response units, maritime transport fleets, cross-border field communication teams, and high-volume B2B radiocommunication hardware wholesale distribution networks looking to source original factory-genuine active mobile antenna components.
The advanced internal RF architecture of the SD330 centers around an adjustable type: 1/4 wave center loading core design, engineered to achieve broad-spectrum agility across a continuous global frequency: 3.5-30MHz matrix (covering the 80-meter through 10-meter amateur bands). Built to seamlessly support high-tier vehicular transceivers running structural field campaigns, the loading coil accommodates a max. power rating: 200W (SSB) peak envelope power. This motorized configuration utilizes an internal drive module running on a minor operational power supply voltage & current: DC 12V 100mA link, driving a mechanical lift that shifts the coil position to optimize matching efficiency. This system ensures swift band transit tracking, clocking an up-down time: approx. 50 sec. (3.5→30MHz) for full-spectrum shifting and a rapid approx. 20 sec. (7→30MHz) loop for standard high-frequency transitions.
Housed inside a weatherized, high-durability structural body measuring an assembled length: approx. 1.85m and registering a well-balanced net weight: approx. 1.1kg, the antenna configuration applies minimal vertical physical leverage to automotive mounts. Tuned to interface cleanly with standard transmission cabling layouts along a system impedance: 50Ω path with a reliable matched SWR: less than 2.0, the feedpoint terminates in a standardized high-retention connector: M-P (PL259 UHF Male style) with an integrated heavy-duty threaded locking collar to protect lines from moisture ingress and intermittent signal drops. Delivered as a complete turnkey mobile solution requiring no manual whip manipulation on the road, this motorized antenna system delivers immediate technical compliance and absolute out-of-the-box field deployment readiness.
Technical Specifications
| Technical Parameter | Specification |
|---|---|
| Product Brand Designation | Diamond Antenna (Original Factory Genuine Japanese Premium Active Line) |
| Hardware Model Designation | SD330 / SD-330 Motorized Screwdriver Series |
| Primary Component Classification | Motor-Driven Variable-Frequency Mobile HF Transceiver Antenna |
| Active Operational Frequencies | 3.5 MHz to 30 MHz Continuous Tunable Matrix (Covers 80m – 10m Amateur Bands) |
| Antenna Radiation Wave Type | 1/4 Wave Center Loading Adjustable Inductor Configuration |
| Rated Forward RF Power Capacity | 200 Watts (200W) SSB Maximum Peak Envelope Power (PEP) |
| Voltage Standing Wave Ratio Efficiency | VSWR Less than 2.0 Target Resonant Center-Point Optimization |
| System Characteristic Impedance | 50Ω Nominal Transmission Line Standardization Profile |
| Primary Base Connection RF Port | M-P Connector Type (Standard PL259 / UHF Male Threaded Pin) |
| Motor Power Grid Input Infrastructure | DC 12V Nominal Power Source Loop / 100mA Low-Current Motor Activation Drive |
| Motorized Shift Transit Timings | Full Spectrum Transit (3.5→30MHz): Approx. 50 seconds Mid Spectrum Transit (7→30MHz): Approx. 20 seconds |
| Total Assembled System Length | Approx. 1.85 meters Vertical Profile Clearance |
| Net Operational Component Mass | Approx. 1.1 kg Balanced Mechanical Hardware Base Weight |
| Verified Hardware Compatibility Scope | SO239 female heavy-duty vehicular base mounts, trunk lip/gutter k-mounts, mobile HF amateur transceivers, low-loss RG58/RG213 coax leads, and 12V cabin accessory lines |
| Primary Fleet Utility Purpose | Turnkey multi-band vehicle outfitting, quick automated frequency tuning, real-time tactical signal tracking, and transmitter amplifier power circuit protection |
