Products related to Frequency:
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Mini Gooit GY560 Radio Frequency Counter 50Mhz‑2.4Ghz Portable Frequency Counter Radio Frequency
Feature: 1. TESTING ANALOG RADIO SIGNALS: Frequency counter can continuously test analog radio signals (handheld radios, cordless phones, GSM cell phones, etc.) and digital radio signals, displaying frequency parameters and signal strength. 2. STABLE PERFORMANCE: Frequency counter can realize automatic shutdown, single key control, one key with all functions. Equipped with foldable whip antenna, stable performance and high reliability. 3. SCOPE OF APPLICATION: Radio frequency counter is used for automobile radio frequency test, marine radio frequency test, hotel, community, property and other radio frequency test. 4. BUILT IN 9V 6F22 BATTERY: Portable frequency counter has a built in 9V 6F22 battery, when the battery needs to be replaced, remove the back cover and install the battery before use. 5. RADIO FREQUENCY MEASURING TOOL: Portable radio frequency counter is the first choice tool for maintenance personnel, wireless enthusiasts to test frequency and signal strength. Specification: Item Type: Radio Frequency Counter Material: ABS Frequency Counting Resolution: 200K (Digital Signal Special), 1K, 100HZ, Optional Testing Distance: 450M About 8m 26.2ft, 150M About 5m 16.4ft Test Range: 50MHZ-2.4GHZ Battery Type: 9V 6F22 800mAh Alkaline Battery (Built In). Package List: 1 x Radio Frequency Counter 1 x Instruction Manual
Price: 36.14 £ | Shipping*: 0.0 £ -
IR Infrared Frequency Tester Wireless remote control frequency tester Auto Key Frequency Tester Car black
Feature This product is a test wireless remote control frequency instrument, it can test the frequency ofthe remote control, can be clearly displayed. Can test the infrared induction is good or badIt is convenient for you to adjust the frequency you need when preparing the remote control. The front of the instrument is equipped withLED lighting , which is more convenient in bad light Place in use. When testing , some electronic signal interference sources should be avoidedsuch as signal towers,base stations,telephone poles,sending and receivingText messages et. IR is infrared receiving lamp. Specifications: Test range : 100M--1G HZ Size : 150x75x30 ( main part ) Working conditions : -10 C-40 C Relative humidity less than 80percent Storage conditions : -20 C-50 C Relative humidity less than 85percent . Package List: 1XFrequency Tester 1XBattery 1xinstructions
Price: 23.21 £ | Shipping*: 0.0 £ -
AD831 High Frequency RF Mixer Single Chip Radio Frequency Converter
Features: The AD831 is a low distortion, wide dynamic range, single chip mixer, suitable for HF and VHF Receiver RFIF frequency, second mixer in D MR base station, DCbaseband conversion, quadrature modulation and demodulation, and ultrasound imaging, frequency shift detection and other applications. The AD831 has provide +24 dBm thirdorder intermodulation intercept point, realization of 10 dBm LO power, without the need for a high power LO drive. There is no corresponding shielding and isolation problems, therefore, compared with the passive mixer to improve the performance of the system, reduce the system cost. The mixer is designed as a single power supply, RF, IF and LO ports with DC isolation capacitor, easy to use. The operating frequency of the RF and LO inputs can be as high as 500MHz. IF output is single ended voltage output. With 250 MHz output bandwidth. A single resistor connected between pins OUT and FB is used to set the gain. The amplifier has low DC offset characteristics, so it can be used in DCbaseband frequency conversion and quadrature amplitude demodulation. When the mixer s output amplifier and the optimum source impedance, the SSB noise figure of the mixer is 10.3dB at 70MHz. Different from the passive mixer, there is no insertion loss, no need external duplex device, and no need passive termination for AD831. Specifications: RF Input: 0.1500MHz RF Input: +10dBm (1dB compression point) Local Oscillator Input: 0.1500MHz Local Oscillator Input: 10dBm IF Output: 0.1200MHz Power Supply Voltage: 911V single ended power supply Size: 33*33mm1.3*1.3in Package Includes: 1 x Frequency Mixer The AD831 is a low distortion, wide dynamic range, single chip mixer, suitable for HF and VHF Receiver RFIF frequency, second mixer in DMR base station, DCbaseband conversion, quadrature modulation and demodulation, and ultrasound imaging, frequency sh The AD831 has provide +24 dBm thirdorder intermodulation intercept point, realization of 10 dBm LO power, without the need for a high power LO drive There is no corresponding shielding and isolation problems, therefore, compared with the passive mixer to improve the performance of the system, reduce the system cost The mixer is designed as a single power supply, RF, IF and LO ports with DC isolation capacitor, easy to use The amplifier has low DC offset characteristics, so it can be used in DCbaseband frequency conversion and quadrature amplitude demodulation
Price: 8.41 £ | Shipping*: 0.0 £ -
Portable Spectrum Frequency Analyzer Simple Operation 4 Modes Handheld Frequency Analyzer
Feature: 1. Touch Function: Spectrum frequency analyzer is with touch function and have no button operation, which means you can touch the screen directly to use. 2. 4 Modes: Spectrum frequency analyzer have 4 modes, such as net mode, spectrum mode, point mode, sweep mode. The default mode is net mode. 3. Simple Installation: Our spectrum frequency analyzer is very easy to install and easy to use, directly aligned with the corresponding position of the instrument to install and operate successfully. 4. Easy to Carry: This spectrum frequency analyzer is light weight, you can always take it with you when you need to testing the electric devices. 5. Usage Scenario: This spectrum frequency analyzer can be matched with a signal source generator, so if you happen to have a related need, then this one is for you. Specification: Item Type: Spectrum Frequency Analyzer Material: Aluminum alloy Output Frequency Range: 1384400MHz Step: 1kHz Output Power: 0dBm Spectrum Input Frequency Range: 1384400MHz Frequency Accuracy After Calibration: +0.1k at 1GHz Input Signal Amplitude Low Noise: 70DBM at 0.5G Input Power: 80 0dBm Support: Use for win NWT4.0 PC side software control, support for winXP, for win7, for win10, etc.. Package List: 1 x Spectrum Frequency Analyzer1 x USB Data Cable1 x Connection Cable1 x Instruction ManualTouch Function: Spectrum frequency analyzer is with touch function and have no button operation, which means you can touch the screen directly to use. 4 Modes: Spectrum frequency analyzer have 4 modes, such as net mode, spectrum mode, point mode, sweep mode. The default mode is net mode. Simple Installation: Our spectrum frequency analyzer is very easy to install and easy to use, directly aligned with the corresponding position of the instrument to install and operate successfully. Easy to Carry: This spectrum frequency analyzer is light weight, you can always take it with you when you need to testing the electric devices. Usage Scenario: This spectrum frequency analyzer can be matched with a signal source generator, so if you happen to have a related need, then this one is for you.
Price: 49.68 £ | Shipping*: 0.0 £
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What is the difference between natural frequency, excitation frequency, and resonance frequency?
Natural frequency is the frequency at which a system naturally vibrates when disturbed from its equilibrium position. Excitation frequency is the frequency at which an external force is applied to a system. Resonance frequency is the frequency at which the amplitude of the system's response is maximized when subjected to an external force at or near its natural frequency. In summary, natural frequency is inherent to the system, excitation frequency is the frequency of the external force, and resonance frequency is the frequency at which the system's response is maximized.
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What is the difference between angular frequency and frequency?
Frequency is the number of complete cycles of a periodic waveform that occur in a unit of time, usually measured in hertz (Hz). Angular frequency, on the other hand, is the rate of change of the phase of a sinusoidal waveform, measured in radians per second. Angular frequency is related to frequency by the equation ω = 2πf, where ω is the angular frequency and f is the frequency in hertz.
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Is the radio frequency 149050 a walkie-talkie frequency?
No, the radio frequency 149050 is not typically used for walkie-talkies. Walkie-talkies typically operate on frequencies within the VHF (Very High Frequency) or UHF (Ultra High Frequency) bands, such as 462-467 MHz in the UHF band. The frequency 149050 is within the HF (High Frequency) band, which is commonly used for long-distance communication, such as amateur radio, maritime, and aviation communication. Therefore, it is unlikely that 149050 would be used for walkie-talkies.
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What is the difference between beat frequency and envelope frequency?
Beat frequency refers to the frequency of the fluctuation in amplitude that occurs when two waves of slightly different frequencies interfere with each other. This fluctuation creates a pulsating sound or sensation. On the other hand, envelope frequency refers to the frequency of the overall shape or envelope of the combined wave, which is determined by the slower of the two interfering waves. In other words, beat frequency is the frequency of the pulsating fluctuations, while envelope frequency is the frequency of the overall shape of the combined wave.
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Accurate RK560 50MHz-2.4GHz Frequency Counter Meter Portable Handheld Radio Frequency Testing
Features： 1. The frequency meter can measure the frequency of the walkie-talkie and is very suitable for DCS and for CTCSS testing. 2. Powered by 9V battery, measuring range of 50MHz-2.4GHz. 3. One button operation, long press the button to select the frequency step. 4. Equipped with an antenna, it can directly measure the frequency and is easy to use. 5. Optional frequency of 1K or 0.1K. Specifications： Measuring range： 50MHz-2.4GHz Display type： only numbers Accuracy level： frequency counter Size： Approx. 9*5.5*2cm3.54*2.17*0.79in Model： Frequency meter Working temperature： as description DIY supplies： electrical Voltage： 9V battery (Not Included) Package Size： Approx. 10.5*8.2*2.3cm4.13*3.23*0.91in Package List： 1 * Counter.
Price: 27.72 £ | Shipping*: 0.0 £ -
Square Panel Frequency Meter 4555Hz AC 380V 1.5 High Accuracy Frequency Tester
Features: Mainly used in industrial and mining enterprises, metallurgy, chemical, electric power, complete sets of equipment and various electronic control devices. Good stability and high measurement accuracy. Installed on the panel for the control system and power distribution systems. Compact shape and lightweight, convenient installation and easy to use. Specification: Condition: 100percent Brand New Item Type: Frequency Tester Scale Range: 4555Hz Accuracy: 1.5 Colour: Black Main Material: Plastic Package List: 1 x Frequency Tester 2 x Bracket 1 x User Manual Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .Mainly used in industrial and mining enterprises, metallurgy, chemical, electric power, complete sets of equipment and various electronic control devices. Good stability and high measurement accuracy. Designed to measure voltage frequency in A.C. electrical power networks. Installed on the panel for the control system and power distribution systems. Compact shape and lightweight, convenient installation and easy to use.
Price: 13.14 £ | Shipping*: 0.0 £ -
Tiny Frequency Detection Card 125KHz 13.56MHz Double Frequency RF Identification Field Detector
Feature: 1. Double Frequency Detection: The RF identification field detector detects and displays the presence of low frequency (125KHz) and high frequency (13.56MHz) fields. This tool provides versatility for testing various access control systems. 2. Compact and Portable Design: The tiny frequency detection card is designed to be compact and discrete, it fits neatly onto your keyring. The RF identification field detector is an indispensable tool. 3. Penetration Testing: Utilize the device for rapid reconnaissance during penetration testing of access control systems. Its ability to quickly identify RF identification fields allows security professionals to assess vulnerabilities and strengthen protective measures effectively. 4. Ideal for Development and Debugging: Whether you re working on hardware or firmware development, this tool is an invaluable resource. Quickly troubleshoot and debug your systems by confirming field presence and frequency, streamlining the development process efficiently. 5. Easy to Operate: The tiny frequency detection card operates without the need for batteries. When in the presence of an RF identification field, an LED indicates the frequency of the field. Specification: Item Type: Tiny Frequency Detection Card Material: PC Product Size: Approx. 5.3x3.4cm 2.09x1.34in Frequency Range: Low Frequency (125KHz) and High Frequency (13.56MHz) Penetration Test: Conduct Quick Access Control Reconnaissance Development: Debug Your Hardware Firmware. Package List: 1 x Tiny Frequency Detection Card
Price: 25.75 £ | Shipping*: 0.0 £ -
OCXO Frequency Reference Board 10MHz Constant Temperature Frequency Standard Reference Module for
Feature: 1. SMA Interface: Frequency reference board with SMA female interface, ultra low phase noise, OCXO module, reliable connection, stable performance. 2. High Performance: OCXO frequency reference board adopts PCB components with high calibration accuracy, high frequency stability and low loss. 3. Replacement Options: This OCXO frequency reference module can be used to replace the old, broken or damaged ones to ensure stable equipment operation. 4. Specifications And Sizes: Calibration accuracy of +- 0.01Hz, output impedance of 50 Ohm , the interface type is SMA female, frequency stability of 5e‑12. 5. Applicable Equipment: This frequency standard reference module is suitable for sound systems, decoders, short wave radios, frequency meters, signal sources, etc. Specification: Item Type: Frequency Reference Board Material: PCB, Metal Interface Type: SMA External Thread and Internal Hole Current Consumption:
Price: 22.52 £ | Shipping*: 0.0 £
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What is the difference between relative frequency and absolute frequency?
Relative frequency is the proportion of the total number of occurrences of a particular value to the total number of occurrences in the data set. It is expressed as a percentage or a decimal. Absolute frequency, on the other hand, is the actual number of occurrences of a particular value in the data set. It represents the raw count of how many times a value appears in the data. While relative frequency gives us a sense of the proportion or percentage of occurrences, absolute frequency gives us the actual count of occurrences.
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How do you measure the grid frequency with a frequency counter?
To measure the grid frequency with a frequency counter, you would first need to connect the frequency counter to the grid power source using appropriate cables. Then, set the frequency counter to the appropriate frequency range for the grid (typically 50 or 60 Hz). Once the frequency counter is properly set up, it will measure the frequency of the grid power source and display the result on its screen. You can then use this measurement to ensure that the grid frequency is within the acceptable range for your electrical equipment.
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What is the highest frequency and what is the lowest frequency?
The highest frequency is the frequency with the shortest wavelength, which is typically in the range of hundreds of terahertz (THz) or even higher. This includes gamma rays, X-rays, and ultraviolet light. The lowest frequency is the frequency with the longest wavelength, which is typically in the range of a few hertz (Hz) or lower. This includes radio waves and extremely low frequency (ELF) waves.
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Have the channels disappeared on a frequency during Vodafone's frequency change?
Yes, during Vodafone's frequency change, some channels may have disappeared on a specific frequency. This can happen if the channels were previously broadcasted on the old frequency and have not yet been migrated to the new frequency. In such cases, viewers may need to rescan their TV or set-top box to find the channels on the new frequency. It's also possible that the channels have been removed from the lineup altogether, so viewers should check with their service provider for the most up-to-date information.
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