China Zhongshi Zhihui Technology (suzhou) Co., Ltd. Company News

 Impact on Others · Jammer: Negatively impacts others by blocking their communications (e.g., a jammer in a café stops all customers from making calls). · Booster: Positively impacts others by improving signal quality for everyone in the coverage area (e.g., a WiFi booster helps all residents in an apartment building). Example:If you’re in a remote cabin with no cell service, a booster would pick up the weak signal from a distant tower and let you make calls. If you’re in a prison and want to stop inmates from using cell phones, a jammer would block all signals in the facility. In short, the fundamental difference is their purpose: jammers block signals to prevent communication, while boosters amplify signals to improve it.

Unwanted signal interference (e.g., dropped calls, slow WiFi) occurs when an external signal disrupts the target signal. It can come from various sources (microwaves, Bluetooth devices, illegal jammers). Here’s how to handle it: Part 1: Detecting Interference 1. Observe Patterns: Note when interference occurs. For example, if your WiFi slows down when you use the microwave (2.4GHz), the microwave is the culprit. 2. Use Tools: · Spectrum Analyzer: Displays the frequency spectrum to identify abnormal signals (e.g., a strong 2.4GHz signal that’s not your WiFi). · Signal Detector: Locates wireless signals (e.g., rogue WiFi routers or jammers). · Mobile Apps: Apps like WiFi Analyzer (Android) scan for WiFi interference. 3. Test Devices: If only one device is affected, the problem is with the device (e.g., a faulty antenna). If multiple devices are affected, the interference is external. Part 2: Dealing with Interference 1. Adjust Frequency/Channel: · WiFi: Switch to a less crowded channel (e.g., from channel 6 to 11 in 2.4GHz). Many routers have an "auto-channel" feature. · Cell Phones: Try switching to a different network (e.g., 5G instead of 4G) if available. 2. Increase Distance: Move your device away from interference sources (microwaves, Bluetooth speakers). Keep your WiFi router away from the kitchen. 3. Use Shielding: Metal or conductive materials (e.g., aluminum foil) can block interference. Line your router’s enclosure with foil (though this may reduce your signal range). 4. Upgrade Equipment: · WiFi Routers: Switch to a dual-band (2.4GHz/5GHz) or mesh network. The 5GHz band is less crowded. · Antennas: Replace the default antenna with a high-gain antenna to improve reception. 5. Report Illegal Interference: If you suspect an illegal jammer (e.g., someone blocking cell signals in a public place), report it to your local regulatory body (e.g., FCC in the US). Part 3: Preventing Future Interference · Plan Your Network: Use a spectrum analyzer to scan for interference before setting up a WiFi router. · Use Quality Devices: High-quality routers and antennas are less prone to interference. · Update Firmware: Firmware updates often include anti-interference improvements.

Signal jammers and boosters serve opposite purposes in wireless communications. Here’s how they differ: 1. Primary Purpose · Jammer: Disrupt or block communications. It prevents target devices (e.g., cell phones) from receiving/transmitting signals. · Booster: Enhance or improve weak signals. It extends the range of a signal and improves quality for devices with poor reception. 2. Working Principle · Jammer: Uses blocking (overpowering the target signal) or spoofing (sending fake signals) to interfere. · Booster: Receives a weak signal, amplifies it, and retransmits it to target devices. 3. Applications · Jammer: Used in secure environments (prisons, exam halls) to prevent unauthorized communication. · Booster: Used in areas with poor coverage (rural areas, basements) to improve communication. 4. Legality · Jammer: Illegal in most countries without authorization. · Booster: Legal in most countries (provided they meet regulatory standards).

Using a signal jammer is illegal in most countries without explicit authorization. The primary reason is that jammers disrupt critical communications (e.g., emergency calls) and violate public network rights. Here’s an overview of global rules: · United States: The FCC strictly prohibits jammers. Violators face fines up to $16,000 and imprisonment. Exceptions are limited to federal agencies (e.g., FBI). · European Union: Jammers require CE certification but are restricted to secure environments (prisons, military bases). Private use is banned. · Canada: Industry Canada prohibits jammers except for government use. Unauthorized use leads to fines and criminal charges. · Australia: The ACMA bans jammers under the Radiocommunications Act. Exceptions are for law enforcement. Legal Use Cases:Jammers are permitted in scenarios where unauthorized communication must be prevented: · Prisons: Stop inmates from using cell phones to coordinate crimes. · Exam Halls: Prevent cheating via wireless devices. · Military Bases: Protect sensitive information from eavesdropping. Consequences of Illegal Use: · Fines: Hefty penalties (e.g., $16,000 in the US, €100,000 in the EU). · Imprisonment: Criminal charges for repeat offenders. · Confiscation: Seizure of the jammer and equipment. Tips for Compliance: · Check local laws before purchasing a jammer. · Obtain authorization from the relevant regulatory body (e.g., FCC). · Use approved devices that meet technical standards. In summary, while jammers have legitimate uses, their deployment is heavily regulated to protect public safety.

A signal booster (or repeater) is a device that enhances weak wireless signals by receiving, amplifying, and retransmitting them. It’s used in areas with poor coverage (e.g., rural areas, basements) to improve communication quality for cell phones, WiFi, or TV. The working principle is simple: 1. Receive: An external antenna picks up the weak signal from a source (e.g., a cell tower). 2. Amplify: A power amplifier boosts the signal strength. 3. Transmit: An internal antenna retransmits the amplified signal to target devices (e.g., smartphones). This process extends the signal range and reduces issues like dropped calls, slow internet, or pixelated TV. There are several types of boosters, each for specific technologies: · Cell Phone Boosters: Target 2G/3G/4G/5G signals. They include an external antenna (roof-mounted), an amplifier (indoor), and an internal antenna (for weak areas). Popular in rural areas. · WiFi Boosters (Range Extenders): Extend WiFi coverage. They receive the existing signal, amplify it, and retransmit it to areas with weak reception (e.g., upstairs bedrooms). · TV Signal Boosters: Improve over-the-air (OTA) TV signals. Mounted on the roof with the TV antenna, they reduce static or pixelation. While boosters are beneficial, over-amplification is illegal in many countries (e.g., the US). It can interfere with other networks, so always choose a booster that matches your target frequency (e.g., 4G for 4G signals). In short, boosters work by amplifying weak signals—making them a valuable tool for addressing poor wireless communication.

A signal jamming module is a specialized component that performs a single function in the jamming process (e.g., generating noise or adjusting frequency). A complete jammer is an integrated device that combines multiple modules to achieve full jamming capability. Think of modules as the "building blocks" of a jammer—each handles a distinct task, and together they create a working system. Common jamming modules include: · Noise Generation Module: Produces the interfering signal (e.g., white noise) that disrupts communications. · Frequency Conversion Module: Tunes the interference to match the target’s frequency band (e.g., shifting from 2.4GHz to 5GHz for WiFi). · Power Amplification Module: Boosts the signal strength to ensure it overwhelms the target. A complete jammer (like a cell phone jammer) integrates all these modules into one device. For example, when you turn on a cell phone jammer, the control module activates the noise generator to produce a signal in the 800MHz–2.7GHz range (covering 2G–5G). The frequency converter adjusts it to the correct band, and the amplifier boosts it to block cell reception in the area. The key difference is customization vs. integration. Modules are used for tailored solutions (e.g., a company creating a jammer for a specific industrial frequency). Complete jammers are ready-to-use for general purposes (e.g., blocking cell phones in a meeting room). In summary, modules are the components that make up a complete jammer—offering flexibility for customization, while complete jammers provide a turnkey solution.

A signal jammer is a device designed to disrupt or block wireless communications (e.g., cell phones, WiFi, GPS) by emitting interfering signals in the same frequency range as the target device. Its core purpose is to prevent the target from receiving or transmitting signals, effectively "jamming" the connection. Jammers work through two main mechanisms: blocking and spoofing. Blocking is the most common: the jammer emits a stronger signal in the target’s frequency band (e.g., 2.4GHz for WiFi or 800MHz for cell phones). This overpowering signal makes it impossible for the target device to distinguish the original signal from the interference. Spoofing, meanwhile, involves sending fake signals to deceive the target—for example, a GPS jammer might transmit false location data to a vehicle’s navigation system. There are several types of jammers, each targeting specific technologies: · Cell phone jammers: Block 2G/3G/4G/5G signals, preventing calls, texts, or data. · WiFi jammers: Disrupt 2.4GHz/5GHz WiFi networks, slowing or stopping internet access. · GPS jammers: Interfere with satellite signals, used to hide a vehicle’s location. It’s critical to note that using jammers is illegal in most countries without authorization. They can disrupt emergency communications (e.g., 911 calls) and violate public network rights. Legal uses are limited to secure environments like prisons, military bases, or exam halls. In short, jammers work by overwhelming or deceiving target devices—but their use is heavily regulated to protect public safety.

Recently, the company launched a new dual-band bidirectional power amplifier HS24581334ATD. This bidirectional amplifier is specially developed for the 2.4 &5.8 GHz frequency band and meets radio transmission standards. This product matches frequency spreading technologies such as direct sequence (DSSS) and orthogonal frequency division multiplexing (OFDM). Using Time Division Duplex (TDD) fast microwave detection technology and linear power amplifier technology, the wireless radio frequency communication distance is greatly expanded while ensuring the transmission rate of wireless equipment remains unchanged. Product specifications  Working frequency band: 2400-2500MHz,5720-5850 MHz  Operating voltage: 12 V  Receive gain: 12±1 dB  Transmit gain: 13±1 dB  Input power range: 10~22dBm  Output power (P1dB): 34±1dBm (2.5W) Application field 2.4&5.8GHz wireless local area network access points and clients Based on 2.4 &5.8 GHz WLAN wireless base stations Based on 2.4 &5.8 GHz WLAN wireless bridge Drone remote control, map transmission, model aircraft, etc.  

The company launched the 0.9G/1.2G/1.6G/2.4G 100W series sweep signal source modules and amplifier modules, which are now in mass production and have been shipped in batches.Operating voltage: 28VOutput power: 50dBm

The company has launched a new 50W frequency sweep signal source module solution with Circulator. It has mass-produced 350~450MHz, 700~850MHz, 2300~2500MHz, 5150~5300MHz, 5700~5900MHz and other frequency bands, and has shipped them in batches.