Fix — Ats20 Radio Manual Better

The standard documentation for the is often brief, but better guidance is available through community-supported manuals and advanced firmware like the ATS_EX firmware guide Core Control Guide Primary Function (Short Press) Advanced Function (Long Press/Special) BAND+ / BAND- Cycle forward/backward through bands. Long press to quickly scroll through bands. VOL+ / VOL- Adjust volume via encoder or direct steps. short press often acts as a Cycles tuning steps (1kHz, 5kHz, 10kHz). Long press (in some firmware) toggles the Switche modulation: FM, AM, LSB, USB. In some versions, long press saves current FM station. Adjusts bandwidth filters (0.5, 1, 1.2, 2.2, 3, 4 kHz).

Used to delete stations in favorites menu (firmware dependent). Toggles Automatic Gain Control On/Off. Helps maintain audio level stability. Rotate to tune frequency; press to confirm or enter menus.

In SSB mode, press and rotate to adjust the BFO (fine-tune voice). Operational Tips ATS_EX Firmware for ATS-20 DSP Receiver - GitHub

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are popular, low-cost "all-band" radio receivers powered by the Si4732 chip. Because these are often sold by various generic manufacturers, a formal manual is rarely included, and the out-of-the-box experience can be confusing for beginners. Essential Controls & Layout

Encoder (Main Knob): Rotate to tune frequency; press and hold to enter menu settings like brightness or BFO (Beat Frequency Oscillator). ats20 radio manual better

Band Up/Down: Cycles through 22 pre-configured bands, including FM, Longwave (LW), Medium Wave (MW), and various Shortwave (SW) bands.

Step: Changes the tuning increment (e.g., 1kHz, 5kHz, 10kHz).

BW (Bandwidth): Selects filter widths (0.5, 1, 1.2, 2.2, 3, or 4kHz) to improve signal clarity or reduce interference.

Mode: Switches between FM, AM, USB (Upper Sideband), and LSB (Lower Sideband).

AGC: Toggles Automatic Gain Control on or off to stabilize signal strength. Getting Better Reception The standard documentation for the is often brief,

Antenna Switch: On the side or rear, ensure the switch is set correctly for your mode (e.g., toggle to "AM/SSB" when listening to shortwave).

External Wire: While it includes a telescopic antenna, adding a simple 20–30ft wire via the BNC connector significantly boosts performance.

Fine Tuning SSB: When listening to "Ham" radio (SSB), use the BFO adjustment (accessed by clicking the encoder) to clarify voices that sound like "Donald Duck". Advanced: Improving the Experience

Many users find the stock firmware limited or buggy. You can upgrade the firmware to the popular Goshante or ATS_EX versions via the USB-C/Micro-USB port using the Arduino IDE. These updates often add: Memory storage for favorite stations. Improved RDS (Radio Data System) for FM. Better S-meter accuracy for signal strength. Lets upgrade the ATS 20+

7. Antenna & Reception Tips

Chapter 3: The "Better" Feature You Are Missing (SSB)

The ATS20 is unique because it decodes SSB via the Si4732 chip. The stock manual mentions this in one sentence and never explains why you need it. AM (Amplitude Modulation): Used by broadcasters (BBC, China

Why SSB matters:

AM (Amplitude Modulation): Used by broadcasters (BBC, China Radio). Sounds loud, but noisy.
SSB (Single Side Band): Used by pilots, Ham radio operators, and military. It sounds like Donald Duck if tuned wrong.

How to listen to Ham radio (The better method):

Tune to 14.074 MHz (20m band – active during the day).
Tap the mode button until you see USB (Upper Side Band).
Look at your BFO setting. Slowly turn the knob until the garbled noise turns into a talking human.

Pro tip: The ATS20 has a "fine tuning" step. Short press the knob to switch between coarse (fast) and fine (slow) tuning. You need FINE mode for SSB.

5. A Word of Caution

No manual is perfect – Some ATS-20 clones have firmware variations. If a manual instruction doesn’t work, your radio may be a different revision.
Don’t rely solely on memory – Keep a digital or printed copy of the manual near your listening post. Even experts forget the key combo to change filter bandwidth.

Part 7: The Ultimate ATS20 Cheat Sheet (Print this)

Since the manufacturer won't give you a "better manual," save this text file to your phone or print it out.