are compact SI4732-based radio receivers covering FM, AM, LW, and SW bands, including Single Sideband (SSB)
SSB is the radio's most powerful feature for long-distance shortwave listening but requires precise handling.
Adjust from 0 to 32 to reduce background static between stations.
The stock ATS-20 is a capable receiver, but it is heavily bottlenecked by its included telescoping whip antenna and internal shielding. Implement these tweaks for a dramatic boost in performance: Upgrade Your Antenna
Switches between radio bands (FM, MW, LW, SW) and amateur radio bands. ats20 radio manual better
Mastering the ATS-20 Radio: A Complete Guide to Better Performance and Operation
: Adjusts the intermediate frequency (IF) filter width. Options vary by mode (e.g., 1.2k, 2.2k, 3.0k, 4.0k for SSB; 4.0k, 6.0k for AM). The Advanced Hidden Configuration Menu
Follow these steps to power on and start tuning into your first stations. Powering and Charging
522 kHz – 1620 kHz (9 kHz steps) or 520 kHz – 1710 kHz (10 kHz steps) LW (Long Wave) Range: 153 kHz – 513 kHz are compact SI4732-based radio receivers covering FM, AM,
) has revolutionized budget shortwave radio listening . Based on the powerful SI4732 chip and an Arduino Nano microcontroller, it delivers incredible functionality—AM, FM, LSB, USB, and LW/MW—in a tiny aluminum package. However, the included documentation is often minimal, leaving users wondering how to truly master the device.
Switches the modulation type. Pressing this cycles through AM, USB, LSB, and WFM.
Upgrading the firmware via the internal USB-to-Serial link can add features like: A visual spectrum scanning bar. Expanded frequency ranges. Better battery level indicators.
If received as a DIY kit:
For Amateur Radio (Ham) listening, the Beat Frequency Oscillator (BFO) is your best friend. When in USB or LSB mode, use the BFO adjustment to "clarify" voices that sound like Donald Duck. 2. Why the ATS-20 is "Better" with an External Antenna
: Found in many firmware versions, this setting (0–32) reduces background static when no strong signal is present.
The included telescoping whip antenna is insufficient for low-frequency DXing (long-distance listening).
Cycles through the pre-programmed Amateur Radio (Ham) bands (e.g., 80m, 40m, 20m, 15m, 10m). This automatically adjusts the mode to LSB or USB depending on standard ham radio conventions. Implement these tweaks for a dramatic boost in
Most ATS-20 units ship with a basic sheet that barely covers how to turn the dial. This often leads to confusion around: The "Hidden" Menus: Modern ATS-20s often use community-driven firmware like