Mobile Transceiver - CRT 2M / 7M / 4M COM

The CRT 2M / 7M / 4M COM is a professional-grade mobile transceiver designed for dual-band VHF/UHF communication across multiple frequency ranges. This compact mobile radio unit is extensively used by emergency responders, amateur radio operators, professional fleet managers, and field engineers who require reliable two-way communication in remote or urban environments. It solves critical communication challenges by providing simultaneous operation across 2-meter, 70-centimeter, and 4-meter amateur radio bands with superior signal clarity and extended range capabilities.

Product Overview

The CRT 2M / 7M / 4M COM operates on the principle of frequency-modulated (FM) transmission across designated amateur radio bands, enabling crystal-clear voice communication up to 25+ kilometers in open terrain. The transceiver utilizes a high-sensitivity superheterodyne receiver architecture with ceramic filters and dual-conversion design, ensuring exceptional selectivity and minimal adjacent-channel interference. The transmitter section incorporates solid-state power amplification delivering consistent RF output across all three bands, while the microprocessor-controlled frequency synthesizer allows rapid band switching and precise frequency tuning. This model stands out through its compact mobile form factor without compromising on transmit power, making it ideal for vehicle-mounted installations in emergency response vehicles, amateur radio clubs, and professional communication networks.

The unit features integrated noise blanking circuitry to suppress impulse noise from ignition systems and electrical interference, a critical advantage in mobile environments. Its dual-band capability allows operators to monitor and transmit on different bands simultaneously, enabling cross-band repeater operation and emergency coordination across multiple frequencies. The front-mounted LCD display provides real-time frequency, power level, and operating mode information, while the ergonomic microphone with PTT control ensures safe operation during vehicle movement. Temperature-compensated oscillators maintain frequency stability across -10°C to +50°C operating range, essential for consistent performance in varied geographical deployments.

Key Specifications

Specification	Details
Product Type	Dual-Band Mobile Transceiver
Brand	CRT Electronics
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Frequency Bands	2M (144-146 MHz), 7M (50-52 MHz), 4M (70-71 MHz)
Transmit Power	25W on 2M and 4M bands, 10W on 7M band
Receiver Sensitivity	0.25 µV (12 dB SINAD) across all bands
Frequency Stability	±2.5 ppm (-10°C to +50°C)
Modulation Type	FM (Frequency Modulation)
Channel Spacing	12.5 kHz / 25 kHz selectable
Antenna Connector	SO-239 UHF female
Power Supply	12-15 VDC, 20A continuous draw
Dimensions	150 x 50 x 180 mm (H x W x D)
Weight	2.5 kg

Key Features

• Tri-Band Operation: Simultaneous VHF/UHF coverage across 2-meter, 70-centimeter, and 4-meter amateur radio bands enabling versatile communication across multiple frequency allocations
• High Transmit Power: 25W output on primary bands ensures extended range communication up to 30+ kilometers in optimal propagation conditions with superior link budget
• Dual-Conversion Receiver: Advanced superheterodyne architecture with ceramic filtering delivers exceptional adjacent-channel rejection ratio (ACJR) exceeding 60 dB for interference-free operation in congested frequency environments
• Noise Blanking Technology: Integrated impulse noise suppression eliminates vehicle ignition noise and electrical interference, maintaining audio clarity during mobile operation
• Microprocessor Control: Full-featured frequency synthesizer with memory channels, scanning capabilities, and split-frequency operation for advanced communication scenarios
• Compact Mobile Design: Space-efficient mounting bracket compatible with standard vehicle dash installations, perfect for emergency response vehicles and amateur radio mobile stations

Applications and Use Cases

• Emergency Response Coordination: Fire departments and paramedics utilize the CRT transceiver for real-time inter-agency communication across multiple frequency bands during disaster response and emergency medical operations
• Amateur Radio Mobile Stations: Radio enthusiasts deploy this unit for portable and mobile operation, enabling participation in nets, emergency communications exercises, and DX expeditions across three distinct amateur bands
• Professional Fleet Management: Logistics companies and field service organizations use dual-band transceivers for continuous crew coordination, reducing response times and improving operational efficiency in last-mile delivery networks
• Search and Rescue Operations: SAR teams leverage the extended range and multi-band capability for coordinated ground-to-ground and ground-to-air communication during wilderness rescue missions in mountainous terrain
• Educational Radio Clubs: Amateur radio associations use these transceivers for teaching radio propagation principles, frequency coordination, and emergency communication protocols to new operators

How to Use

Installation begins with secure mounting of the transceiver in your vehicle using the provided bracket, typically positioned on the dashboard or under the seat for accessibility. Connect the 12-15 VDC power supply directly to your vehicle battery through an inline 20A fuse holder, ensuring proper polarity (red to positive, black to ground). Attach the supplied SO-239 antenna connector to an appropriate VHF/UHF mobile antenna rated for your frequency bands, ensuring the antenna is mounted on the vehicle roof or external surface for optimal radiation pattern and range performance.

Once powered on, the LCD display will illuminate showing the current frequency. Use the microphone's frequency adjustment buttons to select your desired operating frequency within the 2M, 4M, or 7M band. Press the PTT (Push-to-Talk) button on the microphone to transmit, releasing it to receive incoming signals. The dual-band capability allows you to program different frequencies in memory channels for rapid band switching. For extended range communication, ensure your antenna is properly grounded and oriented vertically for omnidirectional coverage. Regularly monitor the S-meter on the display to assess signal strength and adjust your location or antenna orientation for optimal reception quality during mobile operations.

Frequently Asked Questions

What is the maximum communication range of the CRT 2M / 7M / 4M COM transceiver?

The maximum range depends on terrain, antenna height, and propagation conditions. In open terrain with elevated antennas, expect 25-30+ kilometers of reliable line-of-sight communication. Urban environments with buildings and obstacles typically reduce range to 5-15 kilometers. Using repeaters can extend effective range to 50+ kilometers. The 25W transmit power on 2M and 4M bands provides superior link budget compared to lower-power portable units, significantly extending communication distance in field operations.

Can this transceiver operate on all three bands simultaneously?

The CRT 2M / 7M / 4M COM supports dual-band monitoring and split-frequency operation, allowing you to transmit on one band while monitoring another. True simultaneous triple-band operation is not possible with a single receiver, but the rapid band-switching capability (under 100ms) provides practical simultaneous operation for most emergency and amateur radio scenarios. Memory channel programming allows quick switching between bands for monitoring multiple frequencies in sequence.

What type of antenna should I use with this mobile transceiver?

Use a tri-band VHF/UHF mobile antenna specifically designed for 2M/4M/7M operation with SO-239 connector compatibility. Recommended antenna types include fiberglass whip antennas (2-3 dB gain), magnetic mount antennas for temporary installations, or fixed roof-mounted antennas for permanent vehicle installations. Ensure your antenna impedance matches 50 ohms and is rated for at least 50W continuous power. Proper antenna grounding to vehicle chassis improves radiation efficiency and reduces noise pickup.

Is this transceiver suitable for emergency communication networks?

Yes, the CRT 2M / 7M / 4M COM is extensively used by emergency responders, ARES (Amateur Radio Emergency Services), and RACES (Radio Amateur Civil Emergency Services) organizations. Its reliable dual-band operation, extended range, and noise blanking features make it ideal for emergency coordination. Many emergency management agencies approve amateur radio transceivers for backup communication during network outages, making this unit a valuable asset in disaster response scenarios.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy Mobile Transceiver - CRT 2M / 7M / 4M COM Online in India

Purchase the Mobile Transceiver - CRT 2M / 7M / 4M COM online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Mobile Transceiver - CRT