New Features From 2026 AMNVOLT V4 hardware natively supports H J Berndt firmware without extra soldering or motherboard modifications and ships with official firmware pre installed by default You need to flash the H J Berndt version manually after receiving the unit and this firmware developed by H J Berndt includes functions like RTTY CW decoding Important Note The device ships with official firmware pre installed by default If you need to use the H J Berndt version you need to flash it yourself after receiving the V4 unit About this firmware Developed by H J Berndt this firmware is equipped with multiple functions including RTTY CW decoding V4 Update Content 1 Added a shield to the Si4732 receiver to suppress electromagnetic interference Add an ESD device to the antenna input to protect the chip 2 The Hi Z circuit has been moved to the front of the antenna path and uses a more stable VCC RADIO power supply to preserve signal resonance and reduce noise 3 Use wired headphones as an FM antenna headphones are not included in the shipping package this requires use in an environment with a strong FM signal and a long headphone cable for optimal performance 4 The left and right audio channels have been swapped the amplifier and speaker parameters have also been retuned to improve sound quality 5 Replaced with more expensive and superior accessories telescopic antenna and a non slip knob cap with a better feel Basic Features 1 Utilizes the ESP32 S3 controller
