Ham College 52
Southgate ARC - General Amateur Radio Exam part 23. Solid State devices, Standing Waves from DXER ham radio news http://bit.ly/2vs4Xb0 via IFTTT
Southgate ARC - General Amateur Radio Exam part 23. Solid State devices, Standing Waves from DXER ham radio news http://bit.ly/2vs4Xb0 via IFTTT