Reviews Adjustable Frequency

Frequency Generator, DROK DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module

  • PARAMETER --- working voltage range 3.3V-30V.
  • APPLICATION --- as square wave signal generator for experimental development.
  • as square wave signal generator for motor driver.
  • as adjustable pulse generator for PWM dimming, speed regulating, etc..
  • DISPLAY--- clear LCD displays frequency & duty ratio value..
  • MODE --- 2 modes, normal mode & accurate mode..
  • PWM output, can set frequency & duty cycle separately.
  • duty cycle upper and lower bounds adjustable.
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Rockville RWM-4US Quad Wireless UHF 4 Microphone System w/Adjustable Frequency

  • Rockville RWM-4US Quad Wireless UHF 4 Microphone System w/Adjustable Frequency. 20 Adjustable Unique Frequencies on each microphone ensures interference free operation. Easy frequency switching by simply hitting the button on the microphone. (4) Metal handheld microphones with digital display. Professional 19 metal rack mount receiver with LCD display. Illuminated rotary knobs..
  • One button frequency switching allows you to hit the button on any of the 4 microphones and the channel will change on that microphone and auto-sync with the receiver. The display on the microphone shows channel, frequency, battery life. The display on the receiver shows RF signal strength, AF signal strength, frequency channel, battery life of each handheld mic. Operating Range: 300 400(indoor), 250 350(outdoor)..
  • Each mic uses different channel groups so that you will not get interference from one microphone to the other (There are 80 total different channels on this system 20 unique frequencies per mic). Ergonomic metal microphones are extremely high quality and have a nice weight and feel to it. Individual XLR outputs for each microphone to send each microphone to their own mixer channel. XLR and mix output to send all 4 mics to one mixer channel..
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PreSonus Studio 1810c USB-C Audio Interface 18-in/8-out USB-C Audio Interface with 4 Xmax Preamps

  • Package Includes: Pair of Presonus Eris E3. 5 3. 5" Powered Studio Monitors Speakers with Acoustic Tuning + Pair of Rockville RVSM1 Heavy Duty Near-Field Studio Monitor Stands w/ Adjustable Height for Use in any Studio Environment.
  • Pair PreSonus Eris E3. 5 3. 5" Powered Studio Monitors Speakers with Acoustic Tuning. 3. 5-inch (89 mm) Kevlar low-frequency transducer. 1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer. Rear-firing acoustic port for superior bass-frequency reproduction. Optimized, resonance-suppressing internal bracing. High- and low-frequency tuning controls. Front-panel Volume control for speakers and headphone amplifier..
  • 50 watt (25W/side), Class AB bi-amplification. RF interference, output current limiting, over-temperature, transient, and subsonic protection. Amplifier “soft start” feature eliminates popping on power-up. Internal power supply with IEC connector. Power switch with on/off LED. Balanced ¼-inch TRS, unbalanced 1/8-inch stereo, and RCA inputs. Integrated stereo headphone amplifier with front-panel 1/8-inch output. Protection: . RF Interference. Output-Current Limiting. Over-Temperature. Turn-On/Off.
  • Specifications: Inputs: (1) Stereo 1/8" , (2) Balanced 1/4" TRS, (2) Unbalanced RCA . Frequency Respo....
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Tecsun H501 Digital Worldband AM/FM Shortwave Longwave Radio with SSB Reception, Dual Speakers, & MP3 Player, Matte Black

  • 【HF VFO /RF Generator 】It has 10kHz to 220MHz working ranges. 0.5PPM high precise Tcxo clock, the frequency is more accurate. Tuning step of 1Hz, 10Hz, 1kHz, 5kHz, 10kHz and 1MHz..
  • 【VFO for Ham SDR HAM QRP Transceiver】 Used as a local oscillator on Homebrew radio receivers (such as superheterodyne, SDR, direct conversion and Homebrew QRP transceivers) ， a simple RF/clock generator for calibration reference or clock generation，a common 128x64 I2C OLED SSD1306 display and Si5351 module..
  • 【Adjustable】Intermediate frequency (IF) offset (+ or -) is adjustable.The bar graph of the signal meter through the analogs input (ADC).I2C data transmission, only need 2 lines it can be connected to the display, with high stability and accuracy of frequency generation.
  • 【20 Band Presets】Equipped with generator function mode.Initial frequency, end frequency, sweep-frequency-step can be set. 20 band presets (shortcuts) for BCB and HAM frequencies.RX/TX mode selector for Homebrew QRP transceivers..
  • 【 Guarantee】 We providing 100% satisfactory service to every customer to make sure our customer can purchase with confidence. If you have any questions, please contact us, we will reply and improve in time..
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High Frequency Facial Wand - TUMAKOU Portable Handheld Blue High Frequency Facial Machine - 4 Different Blue Glass Tubes for Skin

  • ...be, 1*Tube, 1*Bend Tube and 1*Tongue Tube), and let you focus on all the different areas. Mushroom tube is suitable for broader areas, the Tube is used for hair, Tongue tube is suitable for area around the eye, and Bend Tube is suitable for area around the nasal fossa..
  • 【Adjustable Level & Easy To Use】The energy level of our portable high frequency facial machine is adjustable,the higher level will bring you better results! But before using it for the first time, we recommended to test the strength by hand, and then use it where you want to use it. When you using, just insert the glass tube into the wand, push it in gently, then turn the high frequency face machine down to zero and turn it on, choose different levels to use according to your needs..
  • 【Easy to Carry】Portable and lightweight,you can choose different blue glass tube accessories of high frequency facial machine to use at your own home according to your needs,you don't need to go out, which is convenient and time-saving! All blue accessories are packed in a gift box,TUMAKOU portable high frequency facial machine is also friendly for travel and business trips..
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JUNSHUNTONG HF VFO for Ham SDR QRP Transceiver,20K-220MHz RF Generator Superheterodyne Receiver Debugger,Tcxo Clock,S-Meter, 20 Band presets

  • 【HF VFO /RF Generator 】It has 10kHz to 220MHz working ranges. 0.5PPM high precise Tcxo clock, the frequency is more accurate. Tuning step of 1Hz, 10Hz, 1kHz, 5kHz, 10kHz and 1MHz..
  • 【VFO for Ham SDR HAM QRP Transceiver】 Used as a local oscillator on Homebrew radio receivers (such as superheterodyne, SDR, direct conversion and Homebrew QRP transceivers) ， a simple RF/clock generator for calibration reference or clock generation，a common 128x64 I2C OLED SSD1306 display and Si5351 module..
  • 【Adjustable】Intermediate frequency (IF) offset (+ or -) is adjustable.The bar graph of the signal meter through the analogs input (ADC).I2C data transmission, only need 2 lines it can be connected to the display, with high stability and accuracy of frequency generation.
  • 【20 Band Presets】Equipped with generator function mode.Initial frequency, end frequency, sweep-frequency-step can be set. 20 band presets (shortcuts) for BCB and HAM frequencies.RX/TX mode selector for Homebrew QRP transceivers..
  • 【 Guarantee】 We providing 100% satisfactory service to every customer to make sure our customer can purchase with confidence. If you have any questions, please contact us, we will reply and improve in time..
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(2) Mackie MR524 5 Powered Studio Monitors+10\ Active Sub+Mic+Mount+Stands+Pads

  • Package Includes: (2) Mackie MR524 5 100 Watt Powered Active Studio Monitors Class A/B Bi-Amped Speaker. (1) Mackie MRS10 10 120 Watt Powered Active Studio Subwoofer Sub + Footswitch. (1) RockvilIe RVSM1 Pair of Near-Field Studio Monitor Stands w/ Adjustable Height. (1) Pair of RockvilIe RRS190S Foam Studio Monitor Isolation Pads 7.5" x 9.5"/3 Angles. (1) RockvilIe RCM03 Pro Studio Recording Condenser Microphone Mic+Metal Shock Mount. Features:.
  • Mackie MR524 5 50 Watt Powered Active Studio Monitor Class A/B Bi-Amped Speaker. Designed for superior mix translation and accuracy for professional results in any studio. Equipped with Mackies proven logarithmic waveguide design. Ultra-wide dispersion for enhanced stereo imaging and listening sweet spot. Precise acoustic alignment offers incredibly balanced sound across the entire frequency spectrum. 1 silk dome tweeter provides fast transient response for detailed high end and vocal clarity.
  • 5 polypropylene woofer delivers responsive, dynamic low frequency response. 50 watts of bi-amplified Class A/B amplification. Frequency response: 45 Hz 20 kHz. Optimize MR monitors for your mixing environment. Adjustable acoustic space filters maintain flat response in typical placement configurations. HF filter applies b....
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KWD808-I Electric Acupuncture Stimulator Machine Output Patch Massager Care Acupuncture Stimulator Machine Massager Care 6 Output Patch 500-1000hpa

  • ▶【Electric Acupuncture Stimulator Machine】Adjustable frequency and intensity. Adjustable sensitivity probe point Locator. 6 outputs, plus 1 detection outlet..
  • ▶【Safe & Efficient Treatment】The device is very safe and efficient in treatment because of its output pulse. Waves featuring low voltage, low frequency and having the same frequency range as the body..
  • ▶【5 Types Pulse Waves】There are 5 types of pulse waves to be selected: Continuous wave, Dense-disperse wave, Intermittent wave, Ripple wave, Respiration wave..
  • ▶【Operating Output Protection】With the characteristics of low-pressure, low-frequency, bi-directional, Operating output protection device, particularly safe treatment..
  • ▶【Guarantee】This item will ship from USA,Your satisfaction is our ultimate goal. If there is any questions please feel free to contact with us, we will spare no effort to help you..
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Rockville RWM-3US Triple Wireless UHF 3 Microphone System w/Adjustable Frequency,black

  • What's in the Box: Metal rack mount receiver with LCD display (3) Handheld metal microphones with LCD display (3) Antennas (6) AA batteries 6 ft. to audio cable 5 ft. power adapter Owners manual.
  • Rockville RWM-3US Triple Wireless UHF 3 Microphone System w/Adjustable Frequency 20 Adjustable Unique Frequencies on each microphone ensures interference free operation Easy frequency switching by simply hitting the button on the microphone.
  • (3) Metal handheld microphones with digital display Professional 19 metal rack mount receiver with LCD display Illuminated rotary knobs One button frequency switching allows you to hit the button on any of the 3 microphones and the channel will change on that microphone and auto-sync with the receiver.
  • The display on the microphone shows channel, frequency, battery life The display on the receiver shows RF signal strength, AF signal strength, frequency channel, battery life of each handheld mic Operating Range: 300 400(indoor), 250 350(outdoor) Each mic uses different channel groups so that you will not get interference from one microphone to the other (There are 60 total different channel....
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BIC America V-1220 12-Inch 430-Watt Down-Firing Powered Subwoofer

  • Auto on/off with LED indicator & signal sensing.
  • Contemporary black lacquer top & wood-grain sides.
  • Frequency Response: 24Hz - 200Hz (+/- 3dB), adjustable crossover frequency range: 40Hz- 180Hz.
  • Recommended Power: Built-in-Amplifier Power- 150 Watt RMS, 500-Watt Dynamic Peak.
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