The NHRC-3.1 is the latest generation of of NHRC's popular NHRC-3 Repeater Controller. The NHRC-3.1 offers many improvements over the NHRC-3 and NHRC-3+, including free Windows-based serial programming, an alarm input, NHRC's unique audio test function, active-high and active-low inputs, two digital outputs and two courtesy tone select inputs. The NHRC-3.1 continues the long standing tradition set by the NHRC-3. It has a tremendous amount of functionality packed in a design with a very low parts count, resulting in exceptional reliability at an affordable price. The controller is programmable by sending DTMF sequences, or with NHRC's free Windows-based programming software. The CW ID, hang time, ID timer, timeout timer and tail message counter can all be programmed by the user. All programming is password-protected, and is stored in non-volatile EEPROM memory.

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• Easily integrates with any repeater.
• 8 user-recordable, non-volatile voice messages for duplex mode, each up to 30 seconds long:
  • Initial ID Message
  • Two "Normal" ID Messages
  • Timeout Message
  • Two Tail Messages
  • Alarm tripped message
  • Audio Test track
• Simplex Repeater Controller mode.
  • Plays CW or Voice ID.
  • Stores up to 90 Seconds of speech.
• CAS, CAS and CTCSS, CAS or CTCSS and DTMF Access Modes
• "Intelligent" ID algorithm.
• Dedicated Fan Control/Digital output.
• Six Programming Commands.
• 35 Control Operator Settings.
• Six user commands.
• Five saved setups.
• Touch-Tone remote control and programming.
• Hang timer, ID timer, Timeout timer, Fan Timer, and CW messages stored in non-volatile memory.
• Two Digital Inputs
  • Courtesy Tone Select 1.
  • Courtesy Tone Select 2.
• Two Digital Outputs.
• Receiver audio gating allows use of non-squelched receiver audio.
• Jumper-selectable receiver deemphasis.
• Jumper-selectable high- or low-going COR and CTCSS inputs.
• LED CAS, CTCSS, PTT, and DTMF indicators. LEDs can be disabled for low-power applications.
• Connector for optional NHRC-DAD Digital Audio Delay, to fully mute DTMF and help eliminate Squelch Crashes.
• Connector for optional Communications Specialists TS-64 CTCSS Decoder.
• European ID mode supports 1750 hertz tone burst and European ID rules.
  (Requires external 1750 hertz decoder.)
• Extremely low power consumption.

• NHRC-3.1 User Guide (Version 1.00, 2013-May-12) (~1450KB)

• NHRC-3.1 Programming Software (Version 1.02, 2012-Jul-25) (~120KB)

• NHRC-Squelch Intelligent Carrier-Activated Switch for Repeaters
• NHRC-DAD-2 Digital Audio Delay

NHRC-3.1	Repeater Controller with Real Stored Speech	$179
NHRC-3.1 PROG	Serial Programming Cable	$35
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