Feature:1. WIDE USAGE: VFO variable frequency oscillator can be used for self made equipment, such as superheterodyne receivers, DCR, SDR, or Ham QRP transceivers.2. HIGH ACCURACY: The working range is 10kHz to 220MHz, 0.5PPM Tcxo clock makes frequency more accurate, the tuning steps are 1Hz, 10Hz, 1kHz, 5kHz, 10kHz, 1MHz.3. MULTI FUNCTION: With generator function mode. You can set start frequency, end frequency, sweep step size. This VFO also has a bar chart indicator for signal strength (S Meter) and 20 Band preset. Can also be used as an RF or clock generator.4. 0.96 INCH DISPLAY: Using the universal 0.96 inch 128x64 I2C organic light emitting diode display and Si5351 module, can be connected to the display or Si5351 with just 2 cables.5. I2C TRANSMISSION: Adopting I2C data transmission, with high stability and accuracy. The intermediate frequency (IF) offset (+ or ) is adjustable.Specification:Item Type: Variable Frequency OscillatorMaterial: Aluminum AlloyFeatures:1. Working Range: 10kHz to 220MHz.2. 0.5PPM high precise Tcxo clock, more accurate frequency.3. 1Hz, 10Hz, 1kHz, 5kHz, 10kHz, 1MHz tuning steps.4. Intermediate frequency (IF) offset (+ or -) adjustable.5. 20 preset frequency bands (shortcuts) for BCB and HAM frequencies.6. Signal generator function mode.7. RX TX mode selector, for Homebrew QRP transceiver.8. Bar chart of signal table through analog input (ADC).9. Used as a local oscillator on for Homebrew radio receivers such as superheterodyne, SDR, direct conversion, and for Homebrew QRP transceivers.10. Used as a simple RF or clock generator for calibration reference or clock generation.11. Using universal 0.96 inch organic light emitting diode display.12. High stability and accuracy of frequency generation.13. Battery Information: 3.7V lithium battery, 600mAh (built in)..Package List:1 x Variable Frequency Oscillator1 x Connector1 x Data Cable