JostyKit was the name of a Danish manufacturer that sold nice Do-It-Yourself kits. One of them was the HF65. In fact a free running oscillator that operated in the FM broadcast band (and below and above J, according to the specification sheet somewhere between 60 -145 MHz). A 2N2219 transistor provided appr. 1 Watt HF. The modulation was a mix of FM and AM, but on a regular FM tuner one could easily hear the HF65 and the sound quality wasn’t even bad.
Anyway around
1977 I played with this nice device and was able to broadcast some music in the
neighbourhood.
I think many liscenced HAM operators nowadays started their radio experience with transmitters similar to the HF65.
T1 = 2N2219
T2 = BC172
