RTS MRT-327 A4F
2-Channel User Station with A4F Headphone Connector

OUR PART #  MRT327/A4F


RTS' MRT-327 is a two-channel intercom station for use in RTS-TW intercom systems.  It may be used as a headset station or as a speaker station (with an optional MCS-325 Modular Speaker).  The MRT-327 may be installed in optional console or rack mount configurations.

NOTE: Shown above with an A5F connector, though it comes with an A4F connector.

Features:

  • Call Signaling
    The MRT-327 can send and receive 20 kHz call signals.
  • Dual-Action Momentary/Latching Mic Switch
    The Mic on/off switch can be used as a momentary push-to-talk switch or as a latching on/off switch.
  • Remote Deactivation
    The MRT-327 can receive 24 kHz “talk-off” signals for deactivation of the MRT-327 microphone from a remote location.
  • Microphone Limiter
    The microphone pre-amplifier circuit contains a limiter which helps to equalize output for different voice levels.
  • Optional Microphone Speaker & Headset Configurations
    The standard MRT-327 accepts an unbalanced, dynamic-mic headset or a dynamic microphone used in conjunction with an external speaker located on the rear panel. It also has a jack for an optional Model MCP-90-xx gooseneck panel microphone. Additionally, the MRT-327 may be internally modified for use with a carbon or balanced-dynamic microphone. It can also be modified to provide the microphone audio as an unswitched, balanced output.
  • Powering Options
    The MRT-327 receives operating power from the intercom line. It may be internally modified for local powering from a separate dc power supply or batteries.

Specifications:

  • Input DC Voltage:
    Mode: 18 to 35 volts DC
    Local Power: 15 to 35 volts DC (12 to 15 volts DC, reduced performance)
  • DC Current Drawn from TW Line:
    Quiescent: 45 mA ±10%
    Operating, 25 ohm phones: 75 mA ±10%
    Operating, 25 ohm phones + call light: 90 mA ±10%
    Operating, 8 ohm speaker: 240 mA ±10%
    Operating, 8 ohm speaker + call light: 300 mA ±10%
    Operating current is measured with output level at 10
    Local power option draws no current from TW line.
    DC Current Drawn from TW Line
  • Notes: Operating current is measured with output level at 10 dB below clipping.  Local power option draws no current from TW line.
  • Impedance Across Line: 10,000 ohm, minimum (designed for use with 200O “TW” intercom lines)
  • Environmental Temperature:
    Operating: 0°C to 60°C
    Storage: 40°C to 85°C
    Humidity: Operating and Storage: 5% to 95%, non-condensing
  • Noise Contribution:
    (Ch 2): >-60 dBp
    (Ch 1): >-80 dBp

Microphone Preamplifier:

  • Input Impedance: 470 ohm ±5% (dynamic mic)
  • Source Impedance: 200 ohm, nominal
  • Maximum Input Level: 150 millivolts
  • Frequency Response: (-54dB input): 100 Hz to 8 kHz ±3dB
  • Limiter Range: 30 dB
  • Carbon Mic Excitation Current: 10 mA, nominal

Current Source:

  • Transfer Ratio: 3.3 mA/volt = 3.3 millisiemens
  • Output: 3.3 mA into 200 ohm = ±1 volt peak, nominal

Speaker Amplifier:

  • Maximum Voltage Gain: 30 dB
  • Frequency Response: 100Hz to 8kHz ±4dB
  • Output Power: 1.5 watts into 8 ohm nominal
  • Speaker DIM (speaker muting during mic activation) adjustable, -4 to -30 dB (Factory set to -6 dB)

Headphone Amplifier:

  • Voltage Gain: 34 dB
  • Output Voltage: 8 volts peak-to-peak into 25 ohm nominal
  • Output power: 1/2 watt peak into 25 ohm
  • Frequency Response: 150 Hz to 10 kHz ±3dB
  • Headphone Impedance Range: 25 to 600 ohm (600 to 2000 ohm with reduced levels)
  • Sidetone Adjustment Range: -20 dB to full on

Call Light:

  • Signalling Frequency: 20 kHz ±100 Hz
  • Flashing Rate: 5 Hz ±2 Hz

Talk-Off:

  • Frequency: 24 kHz nominal

Connectors:

  • Dynamic Microphone Headset: XLR type 6-pin female
  • Panel Microphone: 1/4" standard phone jack, 3-circuit
  • Line Input: One (1) XLR type 3-pin female and one (1) XLR type 3-pin male, wired in parallel

Mechanical:

  • Dimensions: 1.71" (44 mm) tall, 8.2" (208 mm) wide, x 9.0" (228 mm) deep
  • Weight: 2.75 lbs (1.25 kg)
  • Construction/Finish: Aluminum case, thermoplastic front panel, light gray finish
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Click to download

RTS MRT-327 A4F
2-Channel User Station with A4F Headphone Connector

OUR PART #  MRT327/A4F

Product Information:

RTS' MRT-327 is a two-channel intercom station for use in RTS-TW intercom systems.  It may be used as a headset station or as a speaker station (with an optional MCS-325 Modular Speaker).  The MRT-327 may be installed in optional console or rack mount configurations.

NOTE: Shown above with an A5F connector, though it comes with an A4F connector.

Features:

  • Call Signaling
    The MRT-327 can send and receive 20 kHz call signals.
  • Dual-Action Momentary/Latching Mic Switch
    The Mic on/off switch can be used as a momentary push-to-talk switch or as a latching on/off switch.
  • Remote Deactivation
    The MRT-327 can receive 24 kHz “talk-off” signals for deactivation of the MRT-327 microphone from a remote location.
  • Microphone Limiter
    The microphone pre-amplifier circuit contains a limiter which helps to equalize output for different voice levels.
  • Optional Microphone Speaker & Headset Configurations
    The standard MRT-327 accepts an unbalanced, dynamic-mic headset or a dynamic microphone used in conjunction with an external speaker located on the rear panel. It also has a jack for an optional Model MCP-90-xx gooseneck panel microphone. Additionally, the MRT-327 may be internally modified for use with a carbon or balanced-dynamic microphone. It can also be modified to provide the microphone audio as an unswitched, balanced output.
  • Powering Options
    The MRT-327 receives operating power from the intercom line. It may be internally modified for local powering from a separate dc power supply or batteries.

Specifications:

  • Input DC Voltage:
    Mode: 18 to 35 volts DC
    Local Power: 15 to 35 volts DC (12 to 15 volts DC, reduced performance)
  • DC Current Drawn from TW Line:
    Quiescent: 45 mA ±10%
    Operating, 25 ohm phones: 75 mA ±10%
    Operating, 25 ohm phones + call light: 90 mA ±10%
    Operating, 8 ohm speaker: 240 mA ±10%
    Operating, 8 ohm speaker + call light: 300 mA ±10%
    Operating current is measured with output level at 10
    Local power option draws no current from TW line.
    DC Current Drawn from TW Line
  • Notes: Operating current is measured with output level at 10 dB below clipping.  Local power option draws no current from TW line.
  • Impedance Across Line: 10,000 ohm, minimum (designed for use with 200O “TW” intercom lines)
  • Environmental Temperature:
    Operating: 0°C to 60°C
    Storage: 40°C to 85°C
    Humidity: Operating and Storage: 5% to 95%, non-condensing
  • Noise Contribution:
    (Ch 2): >-60 dBp
    (Ch 1): >-80 dBp

Microphone Preamplifier:

  • Input Impedance: 470 ohm ±5% (dynamic mic)
  • Source Impedance: 200 ohm, nominal
  • Maximum Input Level: 150 millivolts
  • Frequency Response: (-54dB input): 100 Hz to 8 kHz ±3dB
  • Limiter Range: 30 dB
  • Carbon Mic Excitation Current: 10 mA, nominal

Current Source:

  • Transfer Ratio: 3.3 mA/volt = 3.3 millisiemens
  • Output: 3.3 mA into 200 ohm = ±1 volt peak, nominal

Speaker Amplifier:

  • Maximum Voltage Gain: 30 dB
  • Frequency Response: 100Hz to 8kHz ±4dB
  • Output Power: 1.5 watts into 8 ohm nominal
  • Speaker DIM (speaker muting during mic activation) adjustable, -4 to -30 dB (Factory set to -6 dB)

Headphone Amplifier:

  • Voltage Gain: 34 dB
  • Output Voltage: 8 volts peak-to-peak into 25 ohm nominal
  • Output power: 1/2 watt peak into 25 ohm
  • Frequency Response: 150 Hz to 10 kHz ±3dB
  • Headphone Impedance Range: 25 to 600 ohm (600 to 2000 ohm with reduced levels)
  • Sidetone Adjustment Range: -20 dB to full on

Call Light:

  • Signalling Frequency: 20 kHz ±100 Hz
  • Flashing Rate: 5 Hz ±2 Hz

Talk-Off:

  • Frequency: 24 kHz nominal

Connectors:

  • Dynamic Microphone Headset: XLR type 6-pin female
  • Panel Microphone: 1/4" standard phone jack, 3-circuit
  • Line Input: One (1) XLR type 3-pin female and one (1) XLR type 3-pin male, wired in parallel

Mechanical:

  • Dimensions: 1.71" (44 mm) tall, 8.2" (208 mm) wide, x 9.0" (228 mm) deep
  • Weight: 2.75 lbs (1.25 kg)
  • Construction/Finish: Aluminum case, thermoplastic front panel, light gray finish
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Telex HR1R-300534-008 Single-sided Medium-weight Passive Noise Reduction Headset, A4M Connector 4-pin for RTS
The HR-1 is a single muff, medium-weight passive noise reduction headset with dynamic noise canceling microphone. the headset has a noise reduction rating of 21 dB; suitable for use in a moderately noisy environment. The ergonomic headband ...
Single-sided Lightweight Headset, A4M Connector
Telex PH-88R Single-sided Lightweight Headset, A4M Connector
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RTS MCP-2 Single Rackmount Kit for SSA-324, SSA-424
RTS' MCp-2 is a rackmount kit for one main (modular style) component.  Mounting brackets are the key to the RTS modular user station design concept.  By choosing the appropriate mounting kit individual user stations can be ...
Dual-sided Medium-weight Passive Noise Reduction Headset, A4M Connector
Telex HR2R-300534-001 Dual-sided Medium-weight Passive Noise Reduction Headset, A4M Connector
The HR-2 is a dual-sided, medium-weight passive noise reduction headset with dynamic noise canceling microphone. the headset has a noise reduction rating of 21 dB; suitable for use in a moderately noisy environment. The ergonomic headband ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
Dual-sided Mediumweight Headset, A4M Connector
Telex PH2R-64437-102 Dual-sided Mediumweight Headset, A4M Connector
The PH-2 and PH-2R is a medium-weight dual muff mono headset with foam filled cushions offers a light feel with moderate isolation from ambient noise. Dynamic noise canceling mic is easily positioned with unique continuously adjustable ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
Single Headset with Mic
Telex PH88E-R Single Headset with Mic
Lightweight, single-sided headset with a flexible dynamic boom microphone. 150 ohm earphone with a 12 ft (3.6m) coiled cord and an A4M connector.

Usually ships in 7-14 business days.
Need it sooner? Call us!
5W Passive Modular Speaker
RTS MCS-325 5W Passive Modular Speaker
RTS' MCS-325 is a modular passive general purpose monitor speaker.  It can be combined with MCE-325 and MRT-327 to provide speaker station operation, for example.  Packaged in 1/2 rack by 1 RU metal housing for added ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
Single-sided Mediumweight Headset with A4M Connector
Telex PH1R Single-sided Mediumweight Headset with A4M Connector
Medium-weight single muff headset with foam filled cushions offers a light feel with moderate isolation from ambient noise. Dynamic noise canceling mic is easily positioned with unique continuously adjustable ball joint. Telex PH1R ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
Dual Sided Headset with Mic and A4M Connector
Telex PH44R-300853-401 Dual Sided Headset with Mic and A4M Connector
Lightweight, dual-sided professional headphones with a flexible dynamic boom microphone. 150 ohm earhpones with a 6 ft (1.8m) cord, and an A4M connector.

Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Hardware
RTS MCP1 Mounting Hardware
Dual rack mount kit, two main components side by side. For the SSA-324/424 intercom interfaces.

Usually ships in 7-14 business days.
Need it sooner? Call us!
Tandem Mount Kit for RTS TW Intercom
RTS MCP-4 Tandem Mount Kit for RTS TW Intercom
RTS' MCP-4 is a tandem mount kit for two main (modular style) components.  Comes with 1/4" to 1/4" link cable.  Mounting brackets are the key to the RTS modular user station design concept.  By choosing the appropriate ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Click to download

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