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Introduction
Covert communication system is one of our key products . Designed for covert operations; the product can be easily
concealed in clothing. It is convenient for user to integrate into the crowd during the undercover operation via wireless PTT control. This provide user with flexibility in the implementation of tasks. The system combines many innovative functions to meet the unique covert wireless communication needs, and greatly improve the practicability. As a lead in micro-communication, QDC fully understand that the unique circumstances require system and solution. Users operating in public safety, including those involved in surveillance, close and VIP protection and special operations, have very high requirements on confidentiality. The covert communication equipment, designed to meet the requirements and usability of users in undercover operations, is especially suited for critical covert tasks.
Freshear
FreshEar uses advanced frequency shift technique and the latest state-of-art DSP system with 4 Microprocessors and
accelerator. Based on smart frequency shift transmission and intelligent noise cancellation software developed by Qili, and advanced electrical and acoustic design, FreshEar automatically classifies environmental noise, monitots noise level independently in 128 individual bands with 32k sample rate. It efficiently cancels a wide variety of noise and ensure high-fidelity digital sound quality. Compared to conventional earpiece, it is totally immune to electromagnetic interference caused by power lines, car ignition, soldering iron and many other electronic devices. FreshEar ensures that users will not miss any instruction in a variety of complex electromagnetic environment.
FreshEar can be used with a range of accessories, including bag, belt, microphone and wired or wireless PTT. QDC can customize covert communication solution based on user’s specific applications; enabling customers to fully take advantage of frequency shift zero noise technique. Under rapid technology advance circumstance, people pay more attention to security, interoperability and reliability. QDC is committed to providing innovative technology; promoting customers to complete their tasks in a straightforward manner. Users do not have to worry about the technology behind. FreshEar frequency shift zero noise digital earpiece is an excellent customization example to show that QDC focus on meeting the unique requirements of critical missions.
With high quality and reliability, and ultra invisibility and comfort features, FreshEar can be widely used in criminal investigation, public security, counter-narcotics, national security, anti-evil, patrolman, special police and military, and other law enforcement agencies.
0601 FreshEar Specification
| Maximum Volume output @ 3KHz |
105dB |
| Frequency Response |
300-3600Hz |
| Signal Processing Mode |
Modulation @ DSP |
| Noise Filtering Mode |
Soft Squelch |
| Battery Model |
ZnQ2,A10 |
| Battery Operating Time |
80hr |
| Low Battery Warning/Turn-on Alert |
Beep/Yes |
| SNR |
>45dB |
| Storage Temperature |
-20℃ to 70 ℃ |
| Operating Temperature |
0℃ to 40 ℃ |
| Dimensions |
5X10X15mm |
| Weight (Incl. Battery) |
1.3g |
| Color |
Beige |
| Complies with |
CE/FCC |
Wireless PTT:
The Wireless PTT specially designed by utilizing the NFMI (Near Filed Magnetic Induction) Technology has extremely strong noise cancellation ability. It adopts ultra low frequency that makes it immuneto any interference of electromagnetic wave and disturbance of any other communication equipment. It can work one year with one cell button in normal conditions. This wireless is designed for waterproof.
It looks like car remote control and is convenient to applications under circumstances.
Wireless PTT Specification
| Operation Principle |
NFMI |
| Modulated |
2-level CPFSK |
| Operation Range |
60-150cm |
| Battery Type |
CR2450 |
| Battery Operation Time |
1 year |
| Stand-by Current |
< 200uA |
| Operation Current |
< 6mA |
| Low Battery Warning |
LED |
| Waterproof |
IP67 |
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