Software Difened Radio receivers with RTLdongle/USB stick, Rafael Micro R820T2 , 24 MHz to 1766 MHz + Bandpass filter and High-frequency amplifier

Example screenshot 20 m with HDSDR

Band-pass filter 28 MHz , High-frequency amplifier BFW16A ,
RTLdongle/USB stick tuned from 28 to 30 MHz and the USB connection from a computer to receive 28 to 30 MHz


HF Amplfier