The unit can be upgraded via the USB-A or USB-C data port. Newer community-driven firmware can offer better AGC management, filter settings, and display options.
However, there is a universal complaint among owners:
Reduce bandwidth to 2.2 kHz or 3.0 kHz to cut hiss. ats20 radio manual better
Before turning the device on, familiarize yourself with the physical interface to make navigation seamless.
Press to cycle through filter bandwidths for better audio clarity on crowded bands. The unit can be upgraded via the USB-A or USB-C data port
Slowly rotate the encoder knob clockwise or counterclockwise. You are now fine-tuning in increments of 10 Hz to 50 Hz. Rotate until the voice sounds natural and intelligible. Press the button again to lock it in. 4. Hardware Optimization: Making the ATS-20 Better
If you’re a shortwave listener or ham operator wanting a cheap, portable SSB receiver, buy the ATS-20. Just download the detailed manual separately. Before turning the device on, familiarize yourself with
Avoid turning the volume to maximum (63) on weak signals, as the small internal speaker will distort easily. Keep it around 40–50 and use headphones for better clarity. 5. HAM / SW
The ATS-20 is a portable, battery-powered shortwave radio receiver designed for casual listening and serious radio enthusiasts. It features a digital tuning system, 1710 memories, and a range of 150 kHz to 30 MHz.
Cycles through the pre-programmed frequency bands (LW, MW, 160m, 80m, 40m, 20m, etc.).
Here is the secret the factory manual hides: