Arduino Uno
AD8310 DC to 440 MHz logarithmic amplifier https://www.analog.com/en/products/ad8310.html#

Hardware setup, AD8310 module out connectors connected to Arduino analog pin 0 and GND pin

Arduino IDE serial plotter, no ASK/OOK signal

Serial plotter, ASK/OOK signal at 433.945 MHz. AD8310 can be used as an ASK demodulator above 10 MHz

// for more accurate results, set serial speed to e.g. 57600 and prescaler lower value than default 128
const uint8_t ADC_PIN = 0;
bool adc = false;

void setup() {
  Serial.begin(19200);
  Serial.println();
  ADCSRA = bit(ADEN);
  // ADC prescaler of 128
  ADCSRA &= ~(bit(ADPS0) | bit(ADPS1) | bit(ADPS2));
  ADCSRA |= bit(ADPS0) | bit(ADPS1) | bit(ADPS2);

  ADMUX = bit(REFS0) | (ADC_PIN & 0x07);
}

void loop() {
  if (!adc) {
    bitSet(ADCSRA, ADSC);
    adc = true;
  }
  if (bit_is_clear(ADCSRA, ADSC)) {
    int16_t v = ADC;
    float voltage= v * (5.0 / 1023.0);
    adc = false;
    Serial.println(voltage);
  }
}