Cheap And Discounts DYKB 100W Short wave radio power amplifier Low-pass filter LPF HF low pass LPF 3.5Mhz-30Mhz DC 12V Wholesale. Buy Directly From Merchant likekk. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.