Cheap And Discounts 50KHz-200MHz Malachite SDR Radio Malahit DSP 3.5 Inch Touching Screen SDR HAM Transceiver Receiver STM32H742 Wholesale. Buy Directly From Merchant Ali Professional Instruments& Tools Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.