ER-77 Shoulder-Held Megaphone Datasheet
The ER-77 is a rugged, heavy-duty shoulder-held power megaphone meticulously engineered for clear public address and long-distance speech transmission. Equipped with a detached, high-intelligibility external handheld microphone featuring an integrated talk switch and independent volume slider control, it permits prolonged operation without user fatigue. Constructed from high-impact ABS plastic, its horn ensures smooth, directional, ring-free acoustic projection for industrial, civic, and maritime deployment.
Available Variants for SKYRS Pakistan
To accommodate varying municipal, defense, and maritime crowd-management requirements across Pakistan—including Karachi, Lahore, Islamabad, and Gwadar—the ER-77 platform is provisioned by SKYRS in the following distinct configurations:
ER-77 Standard Voice Variant: Optimized strictly for crisp, high-intelligibility spoken word amplification. Features an off-white high-strength resin finish, ideal for corporate security, academic gatherings, and site inspections.
ER-77W Integrated Signal Variant: Upgraded chassis configuration that incorporates a dedicated high-frequency warning signal (attention whistle or siren mode) to accelerate emergency mass evacuations or perimeter alerts.
ER-77 Tactical Fleet Variant: Outfitted with an external power jack allowing the megaphone to bypass internal battery cell drainage by plugging directly into an external 12V DC auxiliary vehicle supply line.
Technical Specifications
Acoustic Power Profile: 20 Watts continuous rated output / 35 Watts maximum peak output capacity.
Electrical Requirement: 12V DC supplied via 8 standard “C” type battery cells.
Operational Battery Longevity: Up to 7 hours of continuous voice communication using standard alkaline cells.
Effective Signal Reach: Clear voice and tone propagation up to 900 meters under optimal open-air atmospheric parameters.
Transducer Properties: High-output dynamic magnetic assembly mated to an all-weather polyimide speech diaphragm.
Microphone Form Factor: Unidirectional handheld dynamic microphone with a heavy-duty flexible coiled cord jacket and dedicated lockable press-to-talk (PTT) switch.
Chassis Physical Footprint: 298 mm (Horn Face Diameter) × 445 mm (Total Body Length).
Net Structural Mass: 2.5 kg (5.5 lbs) dry body weight without internal battery cells installed.
Deployment, Installation, and Configuration
Exclusive Turnkey Provisioning via SKYRS
Logistics mobilization, structural mounting installation, and precision audio configuration for the ER-77 high-capacity megaphone line are available exclusively through SKYRS across all operational zones in Pakistan.
Strategic Fleet Deployment: Planning safety infrastructure, perimeter control setups, public assembly management, and emergency response operational flows for state agencies and commercial entities.
Hardware Installation: Configuring heavy-duty adjustable nylon shoulder straps for infantry or civil personnel. SKYRS also supplies specialized bracket coupling components to rigidly fix the horn chassis to emergency service response vehicle rooftops or outdoor command posts.
System Configuration: Fine-tuning the external microphone’s input sensitivity, balancing sound projection across dense urban or marine background noise environments, and establishing definitive gain ceilings to prevent local microphone feedback loops.
