professional Bluetooth adaptor for tube radiosbuild in a Telefunken Opus 9 from1958/59
with "Mini Bluetooth 4.1 MP3 Player Audio Decoder Board Modul Micro USB TF SD Module 3.7-5V" The Bluetooth Modul is only active when the "Pick Up" button is switched on. It means you will switch on the Bluetooth Modul with the "Pick Up" button. An optocoupler receives the signal from the "Pick Up" button, wih a current of less them 2mA. I was creating a double layer PCB for this adaptor. This PCB is for almost all 1950´s Radios with magic Eye.
with "Mini Bluetooth 4.1 MP3 Player Audio Decoder Board Modul Micro USB TF SD Module 3.7-5V" The Bluetooth Modul is only active when the "Pick Up" button is switched on. It means you will switch on the Bluetooth Modul with the "Pick Up" button. An optocoupler receives the signal from the "Pick Up" button, wih a current of less them 2mA. I was creating a double layer PCB for this adaptor. This PCB is for almost all 1950´s Radios with magic Eye.