BephaMart Morse Code Reader / CW Decoder / Morse code Translator / Ham Radio Essential Module

this little board is called a CW decoder and they are all over a bay for around $10 there's multiple sailors and they're cheap and they arrive in a in a week or so or maybe longer but there's no instructions and it took a while to figure out how to make this thing work so going over it first of all over here on the lift you've got two jacks now all of the jacks except for the power jack are 1/8 inch stereo type jacks and both of the input pins are connected together so I've tried using a mono plug but that didn't work I had to use a stereo plug so over here on the right is your power power input on the back or the top and it says 9 volts here out beside it so if you put 9 volts DC in and be sure it's DC and be sure that your polarity is such that negative is ground it should work okay there is a 7805 regulator chip in here that regulates it down to 5 volts this jack is your audio input