Overview
The Motorola NLD6571A tone squelch module with Vibrasponder CTCSS is a specialized accessory for Motorola radio systems. CTCSS (Continuous Tone-Coded Squelch System), known as Private Line® (PL) by Motorola, uses sub-audible tones transmitted along with speech to allow multiple users to share the same radio frequency. The NLD6571A provides precise tone decoding and squelch control functionality for improved channel isolation and unwanted signal rejection in land mobile radio applications.
Key Features
- CTCSS tone squelch decoding for selective channel access
- Vibrasponder capability for alert tone functionality
- Motorola-compatible interface for seamless integration
- Reliable squelch performance in noise environments
- Solid-state design for long service life
Technical Specifications
Specific electrical and mechanical specifications for the NLD6571A are not currently available in our database. Verify compatibility with your system integrator before ordering.
Typical Applications
- Land mobile radio systems requiring CTCSS tone decode
- Motorola radio installations needing selective squelch control
- Repeater systems with multiple users on shared frequencies
- Fleet communication networks requiring noise rejection
- Public safety and commercial radio deployments
Compatibility & Replacements
Compatible With
- Motorola mobile and base station radio systems
- Motorola radio receivers with tone squelch interface
- CTCSS/Private Line (PL) equipped radios
- Motorola repeater and communications systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Do not assume interchangeability with other tone squelch modules without confirmation.
Works With
- Motorola CTCSS/Private Line (PL) encoders and decoders
- Motorola repeater control systems
- Standard CTCSS tone frequencies (65 Hz to 250 Hz range)
- Motorola audio and squelch circuits








