The core design data of this tune comes from the automatic tune open source project of its original author N7DDC.
 
 
 
The finished kit is purely hand-soldered, provides 3.2 program support with SSD1306 controller, a resolution of 128x32 pixels, and a 0.91-inch diagonal monochrome OLED display. This circuit contains a set of 7 inductors and 7 capacitors, which allows it to work in a wider frequency range, effectively covering the amateur radio range from 1.8MHz to 50MHz.
 
 
 
Technical Characteristics (Base Model)
 
Allowable supply voltage range: 10-15VDC
 
Maximum current consumption: 400 mA
 
Maximum working power: 100W
 
Maximum possible measured power: 150W
 
Minimum power required to start tuning: 5W
 
Minimum possible measured power: 0.1W
 
Measurement resolution up to 10W: 0.1W
 
Measurement resolution for power greater than 10 watts: 1W
 
Power measurement accuracy error: ±10%
 
Maximum installation inductance: 8.53H inductance
 
Minimum installation step: 0.05H
 
Maximum installed capacity: 1869 pF
 
Minimum Capacitor Installation Step: 10 pF
 
Typical consumption 100-200 mA