SAQ 17.2kHz CW

 This is the historic alternator transmitter in Sweden. It broadcasts a few times a year on special occasions.

DX Explorer

This is a YouTube channel I very much like. 

He is not afraid to say when he doesn't know something, but is always willing to try things. He is a real experimenter. See, for example, his latest video about his simple sferics receiver.

DX Explorer video about the UV-7B from Beofeng

 This video was on the DX Explorer YouTube page.

Spy transceiver

 

DX Explorer has some truly amazing projects. This tiny transceiver fits in a matchbox.