Telonics TNR-3000 Noise Reduction Unit for Telemetry Receivers

Reduce Noise Without Losing Signal with the Telonics TNR-3000

Effectively minimizes background noise while preserving signal integrity with this compact, lightweight, and rugged unit designed for mobile or fixed-site operations.

The Telonics TNR-3000 Noise Reduction Unit is an essential tool for professionals using telemetry receivers in interference-prone environments. Its compact and durable design makes it suitable for use in vehicles or fixed installations. The TNR-3000 effectively attenuates engine impulse noise, constant hums, and heterodynes, without affecting desired telemetry signals. It is compatible with multiple power sources, making it versatile and reliable in the field.

Key Features:

• Effective noise reduction: Reduces background noise by 15 to 17 dB without affecting signals of interest.
• Portable and rugged design: Compact, lightweight (7 oz), and built with molded thermoplastic housing and integrated battery compartment.
• LED indicator: Signals low battery or power check for enhanced operational safety.
• Internal speaker: Allows receiver function verification; high-quality headphones are recommended for monitoring.
• Multiple power options: Operates on a 9V internal battery, 110–240 V power supply, or 12 V vehicle cable (all sold separately).
• Wide frequency response: Tuned range between 240 Hz and 2000 Hz to optimize telemetry signal clarity.

• Specifications
• In the Box
• Required Items
• Optional Items

• Technical Specifications
  Internal power supply	9 V alkaline battery
  Supported external voltage	9 – 28 VDC
  Minimum external current source	150 mA at 12 VDC
  Current consumption	55 mA typical
  Noise reduction (typical)	15 – 17 dB
  Minimum reduction (continuous tone)	40 dB
  Minimum reduction (power pulse)	20 dB @ 100 Hz
  Maximum input signal for optimal reduction	3 Vpp
  Frequency response	240 – 2000 Hz (3 dB), 210 – 2750 Hz (6 dB)
  Amplifier output power	250 mW into 8 ohm at 1 kHz
  Body material	Molded thermoplastic
  Audio input	1/4 in mono jack
  Audio output	1/4 in stereo jack
  Power jack	2.1 mm coaxial (center positive)
  Internal speaker	8 ohm speaker
  Switch	Toggle type On/Off

• • TNR-3000 Noise Reduction Unit
  • Printed user manual
• • Telemetry receiver (e.g., Telonics TR-4 or TR-5)
  • Power source (9 V battery or external)
  • Headphones for monitoring
• • 12 VDC power cable PS007248-001
  • 110–240 VAC power cable PS009736-001
  • 1/4 - 1/4 audio cable RW-7 (WI-000499-001)
  • 1/4 - 1/8 audio cable RW-8 (WI-000768-001)