For better shortwave reception, use an external wire antenna connected to the BNC input. 5. Troubleshooting

Toggle it to the "ON" position. The OLED screen will light up, displaying the firmware version followed by the last saved frequency.

: Rotate the large Encoder Knob to change the frequency. Primary Controls & Functions

Rotate the to scroll through the frequencies.

Used specifically for connecting to a PC to flash new firmware. 2. Basic Operation Guide Power On/Off Turn On: Short press the encoder button. Turn Off: Long press the encoder button.

FM: 64–108 MHz (with RDS capability on supported firmware) LW: 153–500 kHz MW (AM): 520–1710 kHz SW: 1730 kHz–30000 kHz SSB: Upper Sideband (USB) and Lower Sideband (LSB) support

Download popular community-driven firmware sketches (such as those by PU2CLR or Ricardo Caratti).

“STEP 4: For the numbers station, tune to 4625 kHz at 02:00 UTC. MODE to ‘USB.’ Do not speak to the lady. She is not a lady anymore.”

Use narrower filters (1.2kHz–2.2kHz) for clear SSB voice communications. Use wider filters (4.0kHz–6.0kHz) for high-fidelity AM broadcasts. 🛠️ Firmware and Software Modifications

: Cycles through audio filters (0.5, 1, 1.2, 2.2, 3, and 4 kHz) to reduce interference from nearby stations.

The ATS-20 is more than just a radio; it's a project and an entry point into the rewarding worlds of amateur radio, open-source hardware, and programming. As you use it and begin to explore its capabilities, you will quickly discover its true potential. This guide, collected from the community, is your starting point. The rest is up to you—happy listening, and may the signals be strong!

Based on the standard community firmware ATS_EX, here's a step-by-step guide on how to use the radio.

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Ats-20 Radio Manual !!better!! -

For better shortwave reception, use an external wire antenna connected to the BNC input. 5. Troubleshooting

Toggle it to the "ON" position. The OLED screen will light up, displaying the firmware version followed by the last saved frequency.

: Rotate the large Encoder Knob to change the frequency. Primary Controls & Functions

Rotate the to scroll through the frequencies. ats-20 radio manual

Used specifically for connecting to a PC to flash new firmware. 2. Basic Operation Guide Power On/Off Turn On: Short press the encoder button. Turn Off: Long press the encoder button.

FM: 64–108 MHz (with RDS capability on supported firmware) LW: 153–500 kHz MW (AM): 520–1710 kHz SW: 1730 kHz–30000 kHz SSB: Upper Sideband (USB) and Lower Sideband (LSB) support

Download popular community-driven firmware sketches (such as those by PU2CLR or Ricardo Caratti). For better shortwave reception, use an external wire

“STEP 4: For the numbers station, tune to 4625 kHz at 02:00 UTC. MODE to ‘USB.’ Do not speak to the lady. She is not a lady anymore.”

Use narrower filters (1.2kHz–2.2kHz) for clear SSB voice communications. Use wider filters (4.0kHz–6.0kHz) for high-fidelity AM broadcasts. 🛠️ Firmware and Software Modifications

: Cycles through audio filters (0.5, 1, 1.2, 2.2, 3, and 4 kHz) to reduce interference from nearby stations. The OLED screen will light up, displaying the

The ATS-20 is more than just a radio; it's a project and an entry point into the rewarding worlds of amateur radio, open-source hardware, and programming. As you use it and begin to explore its capabilities, you will quickly discover its true potential. This guide, collected from the community, is your starting point. The rest is up to you—happy listening, and may the signals be strong!

Based on the standard community firmware ATS_EX, here's a step-by-step guide on how to use the radio.