[fwmartin2000]

I have restored a 40-180 radio for my own listening pleasure and want to listen to period music,as there is not much to listen to on AM radio
except for talk radio. Rather than buy an AM transmitter to broadcast into my radio, I installed a DPDT switch on the rear of the cabinet and
broke the connection to the hi side of the volume control and sent the radio audio through the switch then back to the volume pot.I then wired
a stereo  1/8 in cable and plug to the other side of the switch.  I plugged the 1/8 in plug into an Alexa Dot, so I just have to say " ALEXA, PLAY
SOME GLEN MILLER MUSIC" , and set the switch to the aux input position. It works great for me but even with the Alexa Dot set to max volume,
I still need to turn the volume control up,but  there is still plenty of gain in the audio stages.     I did have a problem with a small amount of radio
audio bleeding through to the speaker with the switch set to Aux. input.   I solved that be using the other side of the DPDT switch to ground out
the radio audio when the switch was in the Aux position. I built the audio switching and mixing onto a small perf board taped to the back side of
the cabinet. I might think about building a 1 or 2 transistor amp to boost the audio output of  the Alexa Dot just to make the audio levels equal
to the radio level.
This is just my thoughts on the subject of Aux inputs with old radios.
Fred