Broadcast Electronics AM-500A

Broadcast Electronics AM-500A “A” Series Transmitter

Compact and Powerful AM Transmitter for Professional Broadcasters

The Broadcast Electronics AM-500A “A” Series Transmitter is engineered to deliver superior audio quality and reliability in a compact package. Designed for radio stations that demand both performance and efficiency, this transmitter is perfect for maximizing your broadcast capabilities while minimizing your operational costs.

Key Features & Benefits:

• Space-Saving Design: Small footprint frees up valuable floor space.
• Redundant Power Supply: Enhanced reliability with multiple regulated power supplies (AM 6A and AM 10A).
• Versatile Power Levels: Operates at 5 user-defined power levels, ranging from 500W to 10.8kW.
• Advanced Class E Power Modules: Patented technology for superior power economy and reduced operational expenses.
• Front Panel Modulation Metering: Eliminates the need for an outboard modulation monitor.
• Output Tuning Network: Compensates for daily variations in antenna loads, doubling as an output coupler for emergency antennas.
• Enhanced Audio Quality: Superior bass response and low distortion, maintaining excellent performance across all power levels.
• Digital Ready: Designed to accommodate current and future HD Radio™ versions, easily switching between analog and digital modes.

Technical Specifications:

RF Specifications:

• Impedance: 50 Ohm
• Frequency Range: 522 kHz to 1705 kHz, supplied on one frequency (synthesized), accommodates 9 kHz or 10 kHz channel spacing
• Stability: +/- 3ppm, 0° to 50° C
• RF Harmonics Suppression: Meets or exceeds FCC, DOC, & CCIR requirements with external NRSC-1 compatible audio low pass filters
• Modulation Type: Pulse width modulation of L+R envelope with optional integrated C-QUAM AM stereo
• Modulation Capabilities: >145% peak positive capability at rated nominal output power into 50 Ohm load
• Carrier Shift: <1% at 95% negative modulation at 1 kHz

Audio Specifications:

• Modes: Stereo (optional stereo card), Mono L+R, Mono L, Mono R
• Stereo Connector Type: 3 position terminal block (2)
• Stereo Input Level: 10 dBm, +/- dB, L+R (or mono) for 100% L+R envelope modulation
• Stereo Impedance: 600 Ohm; balanced, transformerless, resistive with passive RFI filtering
• Mono Connector Type: 3 position terminal block
• Mono Input Level: 10 dBm, +/- dB, L+R (or mono) for 100% L+R envelope modulation
• Mono Impedance: 600 Ohm; balanced, transformerless, resistive with passive RFI filtering
• Intermod Distortion (Mono): 1.2% or less 1:1 ratio, 1.7% or less 4:1 ratio (60/7000 Hz SMPTE standards)
• Signal-to-Noise Ratio (Mono): >65 dB below reference level (100% negative modulation, 22 Hz to 30 kHz bandwidth, unweighted)
• Squarewave Overshoot (Mono): 0.1% or less at 400 Hz, 90% modulation
• Squarewave Tilt (Mono): 1% or less at 40 Hz, <1.5% at 20 Hz, 90% negative modulation

Environmental Specifications:

• Temperature: 0° to 50° C
• Altitude: Up to 10,000 ft (3,048 M) at 60 Hz; up to 7,500 ft (2,286 M) at 50 Hz
• Humidity: 0% to 95% (non-condensing)

Electrical Specifications:

• AC Input Voltage: 196V to 252V

Unmatched Reliability and Performance

The AM-500A “A” Series Transmitter ensures your broadcast remains on-air with its unparalleled redundancy and reliability features. Redundant PA amplifiers and power supplies, along with front-panel plug-in accessibility, make maintenance straightforward and downtime minimal. The electronically regulated power supplies eliminate the need for an external voltage regulator, further enhancing the transmitter’s efficiency and reliability.

Ready for the Future

Future-proof your station with a transmitter designed for digital integration. The “A” Series is ready to transition to HD Radio™ with ease, allowing you to switch between analog and digital modes locally or remotely.

Upgrade Your Broadcasting Capability

Experience the superior audio quality, reliability, and efficiency of the Broadcast Electronics AM-500A “A” Series Transmitter. Perfect for broadcasters looking to maximize their performance while minimizing their footprint and operational costs. Order now to elevate your station’s broadcasting capabilities.