The SDRplay RSP1B is the enhanced successor to the hugely popular RSP1A, designed for hobbyists and radio enthusiasts who want wide coverage, robust build quality, and improved performance across key bands.

Key Features

• Frequency coverage from 1 kHz to 2 GHz (continuous, no gaps)

• 14-bit ADC resolution for cleaner, more accurate signals

• Up to 10 MHz visible bandwidth

• Improved noise performance below 1 MHz, in the 3.5–5.5 MHz, 50–60 MHz, and 250–320 MHz ranges

• Rugged steel case construction (upgraded from the RSP1A’s plastic housing)

• Built-in broadcast notch filters for AM, FM, and DAB interference reduction

• Bias-T power (4.7V @ 100mA) for powering external devices like LNAs

• High-stability TCXO (0.5 ppm), software-trimmed down to 0.01 ppm

Software Compatibility
Works seamlessly with SDRuno and the new SDRconnect (available for Windows, macOS, Linux, and Raspberry Pi), as well as providing full API support for custom applications.

Why Choose the RSP1B?
Compared to the RSP1A, the RSP1B offers a more challenging build, lower noise floor in critical bands, and better HF handling — making it a strong entry-level to mid-range SDR that balances performance and value.