ADF radio for Boeing 737NG. Consisting on the following elements:

* 1 front panel size 145x65 mm
* 1 auxiliary panel
* 1 key (1 front + 1 rear pieces)

Components needed (not included):

* 2 ON-OFF switches
* 1 OMROM B3F 4050 keyswitch
* 10 display digits
* 1 CTS288 encoder