Open source:
https://g8gyw.github.io/
Firmware update:
https://www.aliyundrive.com/s/pJdyGTtoPYP
QRP short wave special power standing wave meter.
Based on the open source design of g8gyw, it supports serial port communication, serial port calibration and USB firmware upgrade. You can write your own firmware, write the upper computer, expand the alarm output and so on.
Power measurement and standing wave measurement retain one decimal place by default, and communication data is two decimal places.
Applicable frequency range: 1.6mhz-30mhz
Power measurement range: 0.1w-80w
Power measurement accuracy: better than ± 5% (the calibration temperature is 22 degrees, and the error will change with the temperature)
Standing wave measurement range: 1.0-19.9
Insertion loss: < 0.15dB
Insertion standing wave ratio: < 1 02@50 Ω
RF interface type: SMA (outer screw inner hole)
Communication and charging interface type: type-C
Shell size: 63mm * 46mm * 19mm (excluding protruding parts)
Built in lithium battery capacity: 400mah (can be used continuously for more than 30 hours)
Accessories: 1 type-C data cable and 2 SMA to BNC adapters.
The red light is displayed when charging, and the light is off when full.
After startup, the version information and battery voltage information are displayed, the power standing wave measurement interface is displayed after 2 seconds, and the battery power is displayed in the lower right corner.