chipTRX

ESP32 and DRA818V based VHF transceiver

Features

• uses DRA818V as VHF transceiver
• Frequency Range: 134 to 174MHz
• Sensitivity: -122dBm
• Output power: +27/30dBm
• CTCSS / CDCSS codes

  GPIO

• GPIO 16 - UARTRX
• GPIO 17 - UARTTX
• GPIO 18 - SquelchIO
• GPIO 19 - PTTIO
• GPIO 23 - SleepIO
• GPIO 27 - BoostIO
• GPIO 25 - analogOut
• GPIO 32 - analogIn

  Development Hardware

  

  Schematic