Clear-com RM-704 2RU 4-Channel Remote Station

Clear-com RM-704

Clear-com RM-704 4-Channel 2RU Remote Station

Product Code: RM-704
Clear-Com RM-704

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• Dual-action electronic Momentary/Latching Talk buttons
• Individual listen volume controls
• Visual and audible call signaling
• Balanced audio input with program interrupt (IFB)

Clear-com RM-704 4-Channel Remote Station

Clear-com  RM-704 is a 2RU four-channel remote station with programmable front panel buttons and individual channel volume control. The RM-704 is powered directly from the intercom line and requires no external AC power. Unlike the MS-704, the RM-704 has no power supply, circuit breaker or linking function.

Monitoring System

The RM-704 can monitor intercom activity on one or all channels with individual volume level controls. Monitoring intercom activity is possible through a headset or the internal high sensitivity loudspeaker.

Talk Selection

The RM-704 has mic pre-amps with limiters. An individual electronic momentary/latching
Talk button is available for each channel. Illuminated dual-action Talk buttons light an LED
dimly when latched: blue-color while in standby, amber-color when latched. The latching
feature can be disabled. The channels can be accessed separately or simultaneously
without tying them together. A selector switch toggles between the headset or microphone.
The Talk buttons can also be controlled with a footswitch.

Call Signaling

The RM-704 has individual Call buttons with visual call signaling for each channel on the
partyline. The visual signal will flash brightly and will emit an audible signal if the remote station operator holds the Call button for more than 2 seconds. The call signaling feature
can be programmed to the Talk buttons.

Program Input (IFB)

The RM-704 accepts either a balanced or unbalanced line-level audio input through the DB-15 connector on the rear panel. The program can be monitored at the station or fed into another channel where it can also be set up for IFB/Program Interrupt from this or any other

Configuration Panel

The RM-704 has a removable front panel for easy access to the station’s configuration switches and trim pots. Clearly labeled and easy to adjust, these controls allow the RM-704 to be configured quickly. When configuration is complete, the front panel can be reattached so it shows only the needed controls.


• Four-channel remote station
• Dual-action electronic momentary/latching Talk buttons
• Individual listen volume controls
• Balanced audio input with program interrupt (IFB)
• Call signal buttons for each channel
• Microphone limiting
• Volume controls for each channel
• Visual and audible Tone Alert signaling
• Hot mic and line-level outputs
• Built-in speaker
• External switchable line termination on each channel

• Panel Microphone Input

Input Type: Electret

Input Impedance: >=2K

Mic Limiter Threshold: 0dBu ±3dB

Mic Limiter Range: >= 17dB

• Headset Output

Load Impedance: >= 8 Output

Impedance: <= 25

Output Limiter Threshold: +5dBu ± 3dB

Maximum Output Level before Distortion: >= 17dBu

• Speaker Output

Load Impedance: >= 4

Max Output Level before 1% Distortion: 20dBu ± 2dBu

• Partyline Output

Output Noise: < -74dBu

Output Impedance: >10K

• Partyline Input

Crosstalk: < -60dB

Max level before Clipping: >= 12dBu

Sidetone Null Capability: > 25dB

• Stage Announce/Balanced Line Out

Type: Balanced

Output Impedance: >= 200

Load Impedance: >= 600

• IFB/Hot Mic

Type: Unbalanced

Output Impedance: 150

Impedance: >= 600

• Frequency Response

Panel Mic - Partyline: 600 - 10kHz ± 3dB

Headset Mic - Partyline: 200 - 12kHz ± 3dB

Headset Mic - Line Out: 200 - 12kHz ± 3dB

Program Input - Partyline: 100 - 17kHz ± 3dB

Program Input - Headset Out: 200 - 10kHz ± 3dB

Program Input - Speaker Out: 300 - 10kHz ± 3dB

Partyline - Headset Out: 200 - 10kHz ± 3dB

Partyline - Speaker Out: 300 - 10kHz ± 3dB

• Max Distortion

Panel Mic - Partyline: <= 0.5%

Headset Mic - Partyline: <= 0.5%

Headset Mic - Line Out: <= 0.5%

Program Input - Partyline: <= 0.2%

Program Input - Headset Out: <= 0.2%

Program Input - Speaker Out: <= 0.5%

Partyline - Headset Out: <= 0.2%

Partyline - Speaker Out: <= 0.5%

• Noise

Panel Mic - Partyline: < -65dBu

Headset Mic - Partyline: < -70dBu

Headset Mic - Line Out: < -55dBu

Program Input - Partyline: < -85dBu

Program Input - Headset Out: < -60dBu

Program Input - Speaker Out: < -60dBu

Partyline - Headset Out: < -50dBu

Partyline - Speaker Out: < -50dBu

• Max Gain

Panel Mic - Partyline: >= 37dB

Headset Mic - Partyline: 41dB ± 2dB

Headset Mic - Hot Mic Out: 55dB ± 3dB

Headset Mic - Announce Out: 55dB ± 3dB

Program Input - Partyline: >= -16dB

Program Input - Headset Out: >= 18dB

Program Input - Speaker Out: >= 24dB

Partyline - Headset Out: >= 34dB

Partyline - Speaker Out: >= 40dB

• Min Gain

Panel Mic - Partyline: <= 25dB

• DC Power

Input Voltage Range: 20-30V DC

Input Current (Idle): <=165 mA

Input Current (Max): <=195 mA

• Environmental

32 - 122°F (0 - 50°C)

• Dimensions

19 x 3.5 x 10.5in (WxHxD)

(483 x 88 x 267mm)

• Weight

10.9lbs (4.9kg)

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