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
