RM-325 Specifications

TW System Specifications

DC Operating Limits (station to power supply): About 5,000 ft. (1.5 km) with #22 AWG wire

Audio Operating Limits (locally powered stations): About 10,000 ft. (3 km) with low-capacitance cabling

System Capacitance:

0.3mF, maximum (10,000 ft. [3 km] cable at 30 pF/ft.) Intercom Channels:

Station Output Level: 0.7 Vrms (0 dBu) nominal

Channel Terminating Impedance: 200W ±5%

Station Bridging Impedance: greater than 10,000W Current Source:

Transfer Ratio: 3.3 mA/V = 3.3 milliseconds

Output: ±5 mA into 200W, ±1 Vpeak (limiter threshold) Call Signalling:

Send: 20 kHz ±100 Hz, 0.3 Vrms nominal

Receive: 20 kHz ±200 Hz, 100 mVrms Talk- Off Signalling:

Send: 24 kHz ±100 Hz, 0.3 Vrms nominal

Receive: 24 kHz ±200 Hz, 100 mVrms

RM-325 General Specifications

Power Requirements, Channel Powered RM-325: 30 VDC nominal (standard TW line), 45 to 75 mA

Power Requirements, Locally Powered RM-325: 24 VDC nominal, 45 to 75 mA

Environmental Requirements:

Storage: -40°C to 125°C; 0% to 95% humidity, non-condens- ing

Operating: 0°C to 50°C; 0% to 95% humidity, non-condens- ing

Dimensions:

1.72” (44 mm) high, 8.2” (208 mm) wide, 8” (203 mm) deep Weight:

2 lbs 12 oz (1.23 kg) Noise Contribution:

Less than -75 dB on the line Common Mode Rejection Ratio:

Greater than 40 dB from the line Program Input:

Maximum Input Level: 20 dBu

Nominal Input Level: -10 to +8 dBu

Frequency Response: 100 Hz to 12 kHz ±3 dB Headphone Amplifier

Voltage Gain: 30 ±3 dB from the line

Maximum Output: 150 mW into 50W

Frequency Response: 100 Hz to 8 kHz ±3 dB nominal

Output Voltage Level: 8 volts peak-to-peak

Headphone Impedance: 50 to 600W Sidetone:

20 dB minimum range, adjustable Microphone Preamplifier:

Maximum Voltage Gain: 54 dB

Contact Information

Telex Communications, Inc.

12000 Portland Avenue South

Burnsville, Minnesota 55337

Telephone: (800) 392-0498

Fax: (800) 323-0498

Form Number: RTS-20352-1

Date: March, 2006

Frequency Response: 100 Hz to 8 kHz, nominal

Input Impedance: 1,000W, balanced

Limiter Range: 30 dB

Total Harmonic Distortion:

Less than 0.2% nominal at Channel output

RM-325 Connectors

Auxiliary Connector

Type: DB-15F

Pin 1: Program input low

Pin 2: Program input high

Pin 3: Unswitched mic output high

Pin 4: Foot switch in, channel 1

Pin 5: Foot switch in, channel 2

Pin 6: Local power (+24 VDC)

Pin 7: Remote mic switch in

Pin 8: Not Used

Pin 9: Common

Pin 10: Common

Pin 11: Common

Pin 12: Foot switch channel 1 common

Pin 13: Foot switch channel 2 common

Pin 14: Local power common

Pin 15: Remote mic switch common CARB MIC Headset Connector

Type: ¼”, 3-Conductor Phone Jack

Tip: Microphone input high (or mic switch contact

Ring: Headphone high

Sleeve: Common DYN-MIC Headset Connector

Type: XLR-6F 6-Pin Female Audio Connector

Pin 1: Headset dynamic microphone low

Pin 2: Headset dynamic microphone high

Pin 3: Headphone and mic switch common

Pin 4: Headphone left high

Pin 5: Headphone right high

Pin 6: Remote microphone switch contact Intercom Line Input Connector

Type: XLR-3F 3-Pin Female Audio Connector

Pin 1: Common

Pin 2: Intercom channel 1 audio and power

Pin 3: Intercom channel 2 audio Intercom Line Loop Connector

Type: XLR-3M 3-Pin Male Audio Connector

Pin 1: Common

Pin 2: Intercom channel 1 audio and power

Pin 3: Intercom channel 2 audio Program Input Connector

Type: ¼”, 3-Conductor Phone Jack

Tip: Program input high

Ring: Program input low

Sleeve: Common

Ordering Information

RM-325 A5F • 2 channel binaural (stereo) program- mable modular user station • Catalog Number: 90007491000

RM-325 A4F • 2 channel binaural (stereo) program- mable modular user station with A4M headset con- nector • Catalog Number: 90007491001

This specifications information is preliminary and is subject to change without notification.

Brand names mentioned are the property of their respective companies.

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RTS manual RM-325 Specifications, Contact Information, Ordering Information

RM-325 specifications

The RTS RM-325 represents a significant advancement in the realm of tactical military radios, designed to meet the demanding needs of modern defense operations. This radio system is tailored specifically for use in challenging environments, providing robust and reliable communication capabilities essential for coordinating missions effectively.

One of the standout features of the RTS RM-325 is its advanced frequency-hopping spread spectrum technology. This technology enables the radio to rapidly switch frequencies, making it resistant to jamming and eavesdropping attempts. Such capabilities are critical in combat scenarios where secure communication can determine the success or failure of a mission.

Another key characteristic of the RM-325 is its extensive range. With a communication range extending up to 50 kilometers in optimal conditions, the radio ensures that troops can stay connected over vast distances, maintaining operational cohesion even in dispersed formations. This long-range capability is complemented by its high-quality voice encoding, which ensures crystal-clear audio transmission, even in noisy battlefield environments.

The RTS RM-325 is also designed for interoperability with other military communication systems. It supports multiple communication protocols, allowing seamless integration with existing equipment. This flexibility is vital for joint operations where different branches of the military must work together using various communication platforms.

Moreover, the radio boasts a rugged design that can withstand extreme weather conditions, heavy shock, and vibrations. Its durability is crucial for field operations where equipment is exposed to the harsh realities of military engagements. The intuitive user interface further enhances usability, allowing operators to quickly navigate through functions and settings even in high-pressure situations.

In terms of power efficiency, the RM-325 is engineered to optimize battery usage, extending operational time without frequent recharges. This feature is particularly beneficial for long missions where access to power sources can be limited.

The RTS RM-325 also incorporates advanced encryption protocols, ensuring that sensitive information remains secure during transmission. This level of security is increasingly important in the information age, where cyber threats can compromise communication networks.

In summary, the RTS RM-325 is a cutting-edge tactical radio system equipped with advanced technologies that enhance communication capabilities in military operations. Its frequency-hopping technology, long-range communication, interoperability, rugged design, and security features make it an invaluable tool for today’s armed forces, ensuring that they can operate effectively and securely on the battlefield. As military operations continue to evolve, systems like the RTS RM-325 provide essential support, enhancing operational effectiveness and safety.