Yaesu FT227R with 8 CTCSS tones.

Another vintage Yaesu with CTCSS! I recently added 8 CTCSS tones capability to my FT227R. These tones are used for repeaters in the Netherlands, Belgium and Germany. The CTCSS unit is build with a Arduino Nano. The "TONE SQL" button is used to select a tone. Selected tone is presented in morsecode by the "TONE SQL" light (LED) in the button. Here I open a nearby German repeater in Essen by tone "O" which is 110.9 Hz.
73's PA3DAF