Use the 'Mode' button to switch between FM, AM, USB, and LSB. Remember: Most Ham operators below 10MHz use LSB , and those above 10MHz use USB . 4. Improving the Audio: The Speaker Mod
The stock ATS-20 is highly capable, but its environment and antenna setup dictate 90% of what you will hear. Antenna Upgrades ats20 radio manual better
Clip a 20-to-30-foot piece of insulated copper wire to the tip of the telescopic antenna and run it outside or along a window frame. This instantly boosts shortwave reception. Use the 'Mode' button to switch between FM, AM, USB, and LSB