Ats20 Firmware __hot__ Direct

The most exciting feature added by firmware like PU2CLR's SSB library is a rudimentary . Using the radio’s internal ADC, the screen can display a live waterfall of signals up/down the band.

(FM Only) A small "MP" icon that flashes if high multipath interference is detected, suggesting the user needs to reposition. 🛠️ Technical Implementation ats20 firmware

| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | | Wrong clock speed set (should be 8 MHz internal). | Recompile firmware for 8 MHz in Arduino IDE. | | Buttons do nothing | Pin mapping mismatch (ATS20 vs ATS20+). | Download the correct board variant file. | | SSB sounds like "Donald Duck" | BFO frequency is wrong. | Re-calibrate via hidden menu (PPM adjustment). | | Programmer fails (Error: 0x00) | No power to chip or wrong RESET timing. | Add a 10uF capacitor between RESET and GND on the programmer. | | Battery meter shows 0% | Voltage divider resistors differ on your PCB. | Edit the firmware’s BAT_READ pin value and recompile. | The most exciting feature added by firmware like

Open the case to confirm if it uses an Arduino Nano. 🛠️ Technical Implementation | Symptom | Likely Cause

: Finer steps (as low as 10Hz) and improved SSB (Single Sideband) tuning logic. Better Display