What are you most interested in listening to (e.g., local FM, international shortwave, ham radio operators)?
: Adjustable from 0–32; lower values reduce the "chuffing" silence between tuning steps but may increase noise while rotating the knob.
Short press activates the volume adjustment mode (use the encoder knob to change levels). ats20 radio manual better
The included telescopic antenna is fine for local FM or strong daytime AM stations, but weak shortwave signals require more copper.
Changes the Bandwidth filter. In AM/SW mode, you can cycle through widths like 1.0kHz, 2.0kHz, 3.0kHz, 4.0kHz, and 6.0kHz. Narrower filters block adjacent interference; wider filters sound clearer. What are you most interested in listening to (e
Select the correct COM port and board type (usually Arduino Uno or Nano), and click . 6. Troubleshooting Common Issues Issue: Excessive static and zero shortwave reception.
Solution: You are likely inside a concrete or brick building blocking the signals, or near a device causing heavy EMI (like a laptop charger). Move closer to a window, run on battery power rather than USB power, or use an outdoor wire antenna. The included telescopic antenna is fine for local
Many units come with or can be upgraded to Goshante's ATS_EX firmware or similar versions, which unlock deeper settings:
Press the button to select your tuning resolution. For sweeping through shortwave, a 5 kHz step is standard. For SSB ham operators, drop it down to 1 kHz. Rotate the encoder knob to find a station. How to Properly Clear Up SSB (Single Sideband) Signals
This knob changes frequencies, navigates menus, and selects options. It also clicks inward (acts as a button) to switch tuning steps.