The Diamond SRJF40A premium dual-band portable antenna is a commercial-grade tactical flexible whip precision-engineered to deliver exceptional omnidirectional signal propagation, low-loss transmission, and high structural resilience for handheld transceivers. Built for dual-band transmission applications, this high-performance antenna features an optimized electrical design centered on core 144 MHz (2-meter) and 430 MHz (70-centimeter) transmit (TX) frequencies. Beyond standard transceiver duties, it incorporates an advanced wideband engineering layout that dramatically expands reception (RX) capabilities to cover key utility segments across 120 MHz, 150 MHz, 300 MHz, 450 MHz, and 900 MHz. It serves as an essential logistics procurement component for public safety officers, field coordination teams, search and rescue arrays, and high-volume B2B radiocommunication accessory wholesale distributors looking to upgrade portable walkie-talkie signal penetration.
The internal electrical architecture of the Diamond SRJF40A operates as a 1/4 wavelength (λ) radiator on 144 MHz and transitions to a highly efficient 1/2 wavelength (λ) radialless configuration on 430 MHz, which completely eliminates the need for an external chassis ground plane to suppress background RF noise. Measuring a highly flexible 40 cm in length while maintaining an ultra-lightweight structural mass profile of just 40 grams, this rugged whip minimizes torque stress on the radio’s antenna port during high-movement operations. Designed to safely manage up to a 10 Watts maximum input power rating at a standard 50 Ohms nominal impedance, the antenna base comes terminated with a precision-milled SMAJ (SMA-Female) connector, ensuring immediate technical system alignment, solid mechanical lock-in, and total field deployment readiness.
| Technical Specification Parameter | Specifications |
|---|---|
| Product Brand Designation | Diamond Antenna (Original Manufacturing) |
| Hardware Model Designation | SRJF40A (SRJF High-Flex Handheld Series) |
| Primary Component Classification | Dual-Band Flexible Whip Portable Transceiver Antenna |
| Antenna Electrical Typology (VHF) | 1/4 Wavelength (λ) Radiation Wave Matrix |
| Antenna Electrical Typology (UHF) | 1/2 Wavelength (λ) Radialless C-Load Wave Design |
| Core Transmit (TX) Frequencies | 144 MHz VHF Band & 430 MHz UHF Band Dual Alignment |
| Extended Reception (RX) Windows | 120 MHz / 150 MHz / 300 MHz / 450 MHz / 900 MHz Wideband Tracking |
| Maximum Input RF Power Capacity | 10 Watts Continuous Maximum Threshold |
| System Characteristic Impedance | 50 Ohms Nominal Standard Optimization |
| Primary RF Interface Connection | SMAJ Typology (SMA-Female Heavy-Gauge Threaded Core) |
| Total Physical Element Length | 40 cm high-flex construction span |
| Net Component Mass Weight | 40 grams Ultra-Lightweight Portability Footprint |
| Primary Fleet Utility Purpose | Turnkey handheld transceiver antenna replacement, wideband signal scanning, portable range optimization, radio chassis strain reduction, and tactical outfitting |
