Description
The Nautel NX1 is a professional low-power AM transmitter designed for digital and analog medium wave broadcasting. Operating across 531-1700 kHz with 50-ohm impedance, the NX1 delivers 1 kW carrier power using the proven NX Series architecture deployed in over 40 MW of high-power AM installations worldwide. The transmitter employs six-phase direct digital modulation with advanced digital precorrection, providing exceptional linearity and spectral cleanliness for both analog AM and digital transmission modes.
The Nautel NX1 is the industry’s first low-power AM transmitter specifically engineered for digital operation, supporting HD Radio including MA3 all-digital mode and all current DRM configurations. Modulation capability exceeds 135% positive peak, while THD+N remains below 0.5% across the audio band. Front-accessible, hot-pluggable 250W RF power modules contribute equally to the final output, supporting on-air serviceability without taking the system offline.
The transmitter includes an HTML-based Advanced User Interface accessible via standard web browser for comprehensive local and remote monitoring. Built-in real-time RF instrumentation provides spectrum analysis and impedance measurement without external test equipment. Titanium-grade switching power supplies operate at 96% efficiency, minimizing operating costs in a compact rack-mount chassis designed for space-constrained installations.
- Output power: 1 kW carrier (adjustable)
- Frequency range: 531-1700 kHz
- Impedance: 50 ohms
- Modulation: Six-phase direct digital, 1.8 MHz sample rate
- Modulation capability: >135% positive peak
- THD+N: <0.5% across audio band
- HD Radio compatible (including MA3 all-digital)
- DRM compatible (all current modes)
- Hot-pluggable 250W RF modules
- Built-in RF spectrum analyzer and impedance measurement
- HTML-based AUI for remote monitoring
- 96% efficient switching power supplies
The Nautel NX1 is ideal for low-power AM stations transitioning to digital broadcasting or requiring high





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