1. Added an adjustable attention module in the high-frequency path, with an adjustable range from 0 to -31.5 dB.2. Changed the RX888's fixed low-noise amplifier to a VGA model with a gain range of -10 dB to +33 dB. The VGA model is suitable for both the high-frequency and very high-frequency bands.3. Used -generation R828D tuner chip instead of the R820T2.4. Used an enhanced 64MHz low-pass filter to further improve image suppression.5. A jumper allows selection of either an internal reference clock or an external 27MHz reference clock.1. LTC2208 16-bit ADC, 130 MSPS sampling rate2. Dual inputs, HF frequency range: 1kHz - 64MHz, maximum real-time bandwidth 64MHz. VHF frequency range: 64MHz - 1700MHz, maximum real-time bandwidth 10MHz.3. 0.5ppm voltage-controlled oscillator4. ATT adjustment range: -32dB to 0dB5. VGA adjustment range: -11dB to +34dB6. External 27MHz reference clock support7. 3.3V software-controlled bias tee for HF/VHF adjustment8. ADC random jitter software control9. Supports mainstream SDR software. Suitable for HDSDR, for SDRConsole, for SDR#, and for SDR++.Color: BlackMaterial: Aluminum AlloyPackage Contents:1 x RX-888 MKII SDR Radio Receiver1 x USB CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.