The HAM Radio is really fun
httpv://www.youtube.com/watch?v=qc9OV8qfxBM
What is Ham Radio?
(IMHO) Looking at this video, it becomes clear that HAM RAdio is getting older (unfortunately)
New DZkit "SF-100X" (home made solution)
More Build steps
New High-performance Software Controlled Radio Preselector
High-performance Software Controlled Radio Preselector Revision B TUNABLE BAND-PASS FILTER BANK FOR HF BANDS Covering 1.8MHz to 30MHz in five bands. Variable Digital Tuning. Stand alone or USB control. More
New tiny SCR Preselector.
Revision B 1.8MHz to 30MHz Tunable Band Pass Filter. Software Controlled Radio Preselector via USB or I2C Bus A less complex version of the SCR Preselector. Assembled and kit versions. More