15 % ବନ୍ଦ |
CRT SUPERSTAR 9900 V4 12M + CTCSS/DCS INCLUDED
The CRT SUPERSTAR 9900 V4 is a professional-grade 12-meter band mobile transceiver engineered for amateur radio operators, emergency responders, and communications professionals requiring reliable long-distance voice transmission. This model features integrated CTCSS (Continuous Tone-Coded Squelch System) and DCS (Digital Coded Squelch) functionality, enabling selective calling and interference rejection in congested RF environments. The V4 iteration delivers enhanced frequency stability, improved audio clarity, and extended transmission range compared to earlier generations, solving critical communication challenges in remote operations, disaster management, and amateur radio networks.
Product Overview
The CRT SUPERSTAR 9900 V4 operates across the 12-meter band (24.890-24.990 MHz), a popular frequency range for international amateur radio communications and skip propagation. The transceiver employs phase-locked loop (PLL) frequency synthesis technology to maintain crystal-accurate tuning across all channels, with ceramic resonator filtering to minimize harmonic distortion and spurious emissions. The integrated CTCSS encoder/decoder system allows operators to program up to 38 distinct tone frequencies for selective group communication, while the DCS digital system provides 104 code combinations for advanced squelch control. This dual-squelch architecture ensures clean reception even in high-noise environments typical of field operations and emergency response scenarios.
The V4 architecture incorporates a high-gain RF front-end amplifier stage with automatic gain control (AGC) to maintain consistent receiver sensitivity across varying signal strengths, critical for maintaining communication clarity during propagation fade events common in 12-meter band operations. The transmitter section features a Class-AB power amplifier delivering 4-5 watts of RF output, sufficient for establishing reliable contacts across continental distances during favorable ionospheric conditions. Advanced noise blanking circuitry suppresses impulse noise from electrical equipment and atmospheric interference, while the precision frequency counter provides real-time display of operating frequency with 100 Hz resolution accuracy.
Key Specifications
| Specification | Details |
| Product Type | 12-Meter Band Mobile SSB/AM 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 Range | 24.890 MHz to 24.990 MHz (12-Meter Band) |
| Modulation Modes | SSB (USB/LSB) and AM |
| RF Output Power | 4-5 watts adjustable |
| Receiver Sensitivity | 0.5 microvolts for 10dB S/N ratio |
| CTCSS Tones | 38 standard frequencies included |
| DCS Codes | 104 digital coded squelch combinations |
Key Features
- Integrated CTCSS/DCS Squelch System: Dual-tone and digital squelch encoding/decoding eliminates interference from adjacent channel transmissions and enables selective group calling in multi-user RF environments
- Phase-Locked Loop Frequency Synthesis: Crystal-accurate PLL tuning maintains frequency stability within 50 ppm across temperature variations, ensuring reliable repeater access and frequency coordination compliance
- Automatic Gain Control Receiver: AGC circuit maintains consistent audio output levels across signal strengths ranging from 0.5 microvolts to 10+ volts, critical for maintaining intelligibility during propagation fade conditions
- Noise Blanking Circuitry: Advanced impulse noise suppression eliminates ignition noise, switching transients, and atmospheric static, improving copy quality in electrically noisy mobile and field environments
- Adjustable RF Output Power: 4-5 watt transmission power with variable control allows operators to balance range requirements with battery consumption in portable operations
- Frequency Counter Display: Real-time 100 Hz resolution frequency readout enables precise frequency coordination and monitoring of operating frequency drift during extended operations
Applications and Use Cases
- Amateur Radio DX Communications: 12-meter band operators utilize CRT SUPERSTAR 9900 V4 for long-distance SSB voice contacts leveraging favorable ionospheric skip propagation, particularly during solar cycle peaks when 12-meter band conditions support intercontinental communications
- Emergency Response and Disaster Management: Emergency services and disaster relief organizations deploy this transceiver for reliable backup communications in areas where cellular infrastructure is compromised, with CTCSS squelch enabling organized multi-team coordination
- Mobile Field Operations: Geologists, surveyors, and field researchers utilize the transceiver for real-time data communication and safety check-ins from remote locations where conventional cellular coverage is unavailable or unreliable
- Repeater Access and Frequency Coordination: Amateur radio clubs and institutional networks leverage the CTCSS/DCS functionality to manage multiple repeater systems on shared frequency bands, preventing cross-interference and enabling organized channel access protocols
How to Use
Begin operation by connecting a 12-13.8 VDC power supply to the rear panel power connector, ensuring proper polarity to prevent damage to the solid-state circuitry. Install a quarter-wave 12-meter vertical antenna or dipole antenna system with impedance matching to the 50-ohm RF output connector. Tune the receiver across the 24.890-24.990 MHz band using the frequency selector knob, adjusting the squelch control until the receiver mutes between transmissions. To activate CTCSS encoding for transmission, select the desired tone frequency from the 38-tone menu using the control panel buttons, enabling selective calling of stations equipped with matching CTCSS decoders.
For SSB transmission, switch the modulation selector to USB (Upper Sideband) for normal voice operation or LSB (Lower Sideband) for compatibility with certain frequency coordination protocols. Adjust the microphone gain control to achieve approximately 50-70% modulation depth as indicated by the RF power meter, avoiding over-modulation which causes splatter interference to adjacent frequencies. When operating with DCS digital squelch, select the appropriate 3-digit DCS code from the 104-code library to establish selective communication within organized groups. Monitor the frequency counter display continuously to verify operating frequency accuracy and detect drift, particularly during extended transmission sessions where thermal effects may shift oscillator frequency.
Frequently Asked Questions
What is the difference between CTCSS and DCS squelch systems in the CRT SUPERSTAR 9900 V4?
CTCSS (Continuous Tone-Coded Squelch System) uses 38 standard audio frequency tones (67.0 Hz to 254.1 Hz) encoded within the voice transmission to selectively open receiver squelch on matching decoders, suitable for analog voice communications where tone frequency selection provides sufficient group separation. DCS (Digital Coded Squelch) employs 104 distinct 3-digit digital codes transmitted as a 134.4 baud digital stream, offering superior selectivity and interference rejection in high-density RF environments. Both systems can be used simultaneously on the CRT SUPERSTAR 9900 V4, allowing operators to implement layered access control protocols where both tone and digital code must match for squelch opening.
Can the CRT SUPERSTAR 9900 V4 operate in repeater mode or does it only function as a simplex transceiver?
The CRT SUPERSTAR 9900 V4 is configured for simplex point-to-point communications on the 12-meter band and does not include built-in repeater functionality such as offset frequency capability or time-out timer. However, the integrated CTCSS/DCS squelch systems enable organized repeater access protocols where multiple users can share simplex frequencies through selective tone-based channel allocation. For full repeater operation with automatic frequency offset and repeater control features, users should consult professional repeater controller equipment designed specifically for 12-meter band repeater systems.
What antenna system is recommended for optimal 12-meter band performance with the CRT SUPERSTAR 9900 V4?
A quarter-wave vertical antenna cut to 2.47 meters (approximately 8.1 feet) provides omnidirectional radiation pattern suitable for mobile and portable operations, while a half-wave dipole antenna cut to 4.94 meters provides superior low-angle radiation for long-distance skip propagation. Ensure antenna impedance matching to the transceiver's 50-ohm output using appropriate balun transformers or coaxial cable velocity factor calculations. Mobile installations benefit from roof-mounted vertical antennas with low-loss RG-8X coaxial feedline to minimize transmission line attenuation across the several-meter cable run from transceiver to antenna.
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 CRT SUPERSTAR 9900 V4 12M + CTCSS/DCS INCLUDED Online in India
Purchase the CRT SUPERSTAR 9900 V4 12M + CTCSS/DCS INCLUDED 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 CRT SUPERSTAR 9900 V4 12M + CTCSS/DCS INCLUDED
CRT SUPERSTAR 9900 V4 12M + CTCSS/DCS INCLUDED
The CRT SUPERSTAR 9900 V4 is a professional-grade 12-meter band mobile transceiver engineered for amateur radio operators, emergency responders, and communications professionals requiring reliable long-distance voice transmission. This model features integrated CTCSS (Continuous Tone-Coded Squelch System) and DCS (Digital Coded Squelch) functionality, enabling selective calling and interference rejection in congested RF environments. The V4 iteration delivers enhanced frequency stability, improved audio clarity, and extended transmission range compared to earlier generations, solving critical communication challenges in remote operations, disaster management, and amateur radio networks.
Product Overview
The CRT SUPERSTAR 9900 V4 operates across the 12-meter band (24.890-24.990 MHz), a popular frequency range for international amateur radio communications and skip propagation. The transceiver employs phase-locked loop (PLL) frequency synthesis technology to maintain crystal-accurate tuning across all channels, with ceramic resonator filtering to minimize harmonic distortion and spurious emissions. The integrated CTCSS encoder/decoder system allows operators to program up to 38 distinct tone frequencies for selective group communication, while the DCS digital system provides 104 code combinations for advanced squelch control. This dual-squelch architecture ensures clean reception even in high-noise environments typical of field operations and emergency response scenarios.
The V4 architecture incorporates a high-gain RF front-end amplifier stage with automatic gain control (AGC) to maintain consistent receiver sensitivity across varying signal strengths, critical for maintaining communication clarity during propagation fade events common in 12-meter band operations. The transmitter section features a Class-AB power amplifier delivering 4-5 watts of RF output, sufficient for establishing reliable contacts across continental distances during favorable ionospheric conditions. Advanced noise blanking circuitry suppresses impulse noise from electrical equipment and atmospheric interference, while the precision frequency counter provides real-time display of operating frequency with 100 Hz resolution accuracy.
Key Specifications
| Specification | Details |
| Product Type | 12-Meter Band Mobile SSB/AM 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 Range | 24.890 MHz to 24.990 MHz (12-Meter Band) |
| Modulation Modes | SSB (USB/LSB) and AM |
| RF Output Power | 4-5 watts adjustable |
| Receiver Sensitivity | 0.5 microvolts for 10dB S/N ratio |
| CTCSS Tones | 38 standard frequencies included |
| DCS Codes | 104 digital coded squelch combinations |
Key Features
- Integrated CTCSS/DCS Squelch System: Dual-tone and digital squelch encoding/decoding eliminates interference from adjacent channel transmissions and enables selective group calling in multi-user RF environments
- Phase-Locked Loop Frequency Synthesis: Crystal-accurate PLL tuning maintains frequency stability within 50 ppm across temperature variations, ensuring reliable repeater access and frequency coordination compliance
- Automatic Gain Control Receiver: AGC circuit maintains consistent audio output levels across signal strengths ranging from 0.5 microvolts to 10+ volts, critical for maintaining intelligibility during propagation fade conditions
- Noise Blanking Circuitry: Advanced impulse noise suppression eliminates ignition noise, switching transients, and atmospheric static, improving copy quality in electrically noisy mobile and field environments
- Adjustable RF Output Power: 4-5 watt transmission power with variable control allows operators to balance range requirements with battery consumption in portable operations
- Frequency Counter Display: Real-time 100 Hz resolution frequency readout enables precise frequency coordination and monitoring of operating frequency drift during extended operations
Applications and Use Cases
- Amateur Radio DX Communications: 12-meter band operators utilize CRT SUPERSTAR 9900 V4 for long-distance SSB voice contacts leveraging favorable ionospheric skip propagation, particularly during solar cycle peaks when 12-meter band conditions support intercontinental communications
- Emergency Response and Disaster Management: Emergency services and disaster relief organizations deploy this transceiver for reliable backup communications in areas where cellular infrastructure is compromised, with CTCSS squelch enabling organized multi-team coordination
- Mobile Field Operations: Geologists, surveyors, and field researchers utilize the transceiver for real-time data communication and safety check-ins from remote locations where conventional cellular coverage is unavailable or unreliable
- Repeater Access and Frequency Coordination: Amateur radio clubs and institutional networks leverage the CTCSS/DCS functionality to manage multiple repeater systems on shared frequency bands, preventing cross-interference and enabling organized channel access protocols
How to Use
Begin operation by connecting a 12-13.8 VDC power supply to the rear panel power connector, ensuring proper polarity to prevent damage to the solid-state circuitry. Install a quarter-wave 12-meter vertical antenna or dipole antenna system with impedance matching to the 50-ohm RF output connector. Tune the receiver across the 24.890-24.990 MHz band using the frequency selector knob, adjusting the squelch control until the receiver mutes between transmissions. To activate CTCSS encoding for transmission, select the desired tone frequency from the 38-tone menu using the control panel buttons, enabling selective calling of stations equipped with matching CTCSS decoders.
For SSB transmission, switch the modulation selector to USB (Upper Sideband) for normal voice operation or LSB (Lower Sideband) for compatibility with certain frequency coordination protocols. Adjust the microphone gain control to achieve approximately 50-70% modulation depth as indicated by the RF power meter, avoiding over-modulation which causes splatter interference to adjacent frequencies. When operating with DCS digital squelch, select the appropriate 3-digit DCS code from the 104-code library to establish selective communication within organized groups. Monitor the frequency counter display continuously to verify operating frequency accuracy and detect drift, particularly during extended transmission sessions where thermal effects may shift oscillator frequency.
Frequently Asked Questions
What is the difference between CTCSS and DCS squelch systems in the CRT SUPERSTAR 9900 V4?
CTCSS (Continuous Tone-Coded Squelch System) uses 38 standard audio frequency tones (67.0 Hz to 254.1 Hz) encoded within the voice transmission to selectively open receiver squelch on matching decoders, suitable for analog voice communications where tone frequency selection provides sufficient group separation. DCS (Digital Coded Squelch) employs 104 distinct 3-digit digital codes transmitted as a 134.4 baud digital stream, offering superior selectivity and interference rejection in high-density RF environments. Both systems can be used simultaneously on the CRT SUPERSTAR 9900 V4, allowing operators to implement layered access control protocols where both tone and digital code must match for squelch opening.
Can the CRT SUPERSTAR 9900 V4 operate in repeater mode or does it only function as a simplex transceiver?
The CRT SUPERSTAR 9900 V4 is configured for simplex point-to-point communications on the 12-meter band and does not include built-in repeater functionality such as offset frequency capability or time-out timer. However, the integrated CTCSS/DCS squelch systems enable organized repeater access protocols where multiple users can share simplex frequencies through selective tone-based channel allocation. For full repeater operation with automatic frequency offset and repeater control features, users should consult professional repeater controller equipment designed specifically for 12-meter band repeater systems.
What antenna system is recommended for optimal 12-meter band performance with the CRT SUPERSTAR 9900 V4?
A quarter-wave vertical antenna cut to 2.47 meters (approximately 8.1 feet) provides omnidirectional radiation pattern suitable for mobile and portable operations, while a half-wave dipole antenna cut to 4.94 meters provides superior low-angle radiation for long-distance skip propagation. Ensure antenna impedance matching to the transceiver's 50-ohm output using appropriate balun transformers or coaxial cable velocity factor calculations. Mobile installations benefit from roof-mounted vertical antennas with low-loss RG-8X coaxial feedline to minimize transmission line attenuation across the several-meter cable run from transceiver to antenna.
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 CRT SUPERSTAR 9900 V4 12M + CTCSS/DCS INCLUDED Online in India
Purchase the CRT SUPERSTAR 9900 V4 12M + CTCSS/DCS INCLUDED 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 CRT SUPERSTAR 9900 V4 12M + CTCSS/DCS INCLUDED