ATS-20+ Plus V2 SI4732 SDR Radio Receiver FM AM SW SSB OLED

ATS-20+ Plus V2 SI4732 SDR Full-Band Portable Radio Receiver

Tune into the world with the ATS-20+ Plus V2 SDR Radio Receiver, powered by the renowned SI4732 chip. Whether you're a ham radio enthusiast, shortwave listener, or just love exploring the airwaves, this compact and rechargeable receiver delivers crystal-clear reception across FM, AM (MW & SW), and SSB (LSB & USB) bands — all displayed on a sharp 0.96-inch OLED screen.

Key Features

• 0.96" OLED Display – Clearly shows band, AGC status, MONO mode, and more at a glance
• Full-Band Coverage – Supports FM, AM (MW and SW), and SSB (LSB and USB)
• 22 Pre-Configured Bands – Commercial and ham radio bands ready to use out of the box
• USB Rechargeable – Built-in 3.6V 800mAh polymer lithium battery with included Type-C charging cable
• Auto-Hold Setting – Remembers your last settings even after power failure
• 3.5mm Audio Output – Compatible with standard earphones for private listening
• Speaker Output – Supports 4Ω / 2W and 8Ω / 1.5W speaker connections
• SMA Antenna Interface – Includes telescopic antenna; PCB retains SI4732 socket for easy chip replacement
• Audio Bandwidth Filters – Selectable at 0.5, 1, 1.2, 2.2, 3, and 4 kHz
• BFO Control – Fine-tune SSB signals with precision
• Frequency Step Switch – Choose from 1, 5, or 10 kHz steps

Specifications

What's in the Box

• 1 × ATS-20+ Plus V2 Radio Receiver
• 1 × Telescopic Antenna
• 1 × Type-C Charging & Data Cable

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Learn More About SDR & Radio Technology

Curious about Software Defined Radio and how it works? Visit the NIH/NCBI article on SDR-based signal processing for an in-depth technical overview.

Frequently Asked Questions

Q: What radio bands does the ATS-20+ Plus V2 SDR receiver support?

A: The ATS-20+ Plus V2 supports FM, AM (Medium Wave and Shortwave), and SSB (LSB and USB) bands. It comes pre-configured with 22 commercial and ham radio bands, making it ready to use right out of the box for both casual listeners and amateur radio enthusiasts.

Q: Does the ATS-20+ Plus V2 have a rechargeable battery?

A: Yes! It features a built-in 3.6V 800mAh polymer lithium battery that provides stable, long-lasting power. It recharges conveniently via the included USB Type-C cable, so you can use it on the go without needing to replace batteries.

Q: Can I replace the SI4732 chip on the ATS-20+ Plus V2?

A: Yes. The printed circuit board retains the SI4732 chip socket, allowing you to replace the chip yourself. The firmware and software are compatible, giving hobbyists and developers flexibility to upgrade or swap chips as needed.

Q: Is the ATS-20+ Plus V2 compatible with external speakers and earphones?

A: Absolutely. It includes a 3.5mm audio output jack for standard earphones and also supports external speaker connections — 4Ω / 2W or 8Ω / 1.5W speakers are both compatible.