04-19-2021, 04:59 PM
Thanks again for the info Chas. I do have a copy of the Atwater Kent Radio instruction book, volume 2. This radio came with no cables. Thinking of selling off a few motorcycles Eliot. So with my retirement goal of becoming lazy, the ARBE III is pulling at my wallet fairly strong.
With compass in hand along with 9 volt battery, multimeter, and spring scale. Determined what was North and South, Positive and negative.
Since I don't yet have a working radio tried just sending a 1k tone audio from my sig gen to see if speaker would respond in any way. I know I'm not the first one, but a new adventure for me. O-scope said my 1000 hz was 20 vpp .5volt DC. Expected a very weak response from the speaker especially with my mason jar and metal band modification. Was surprised when I was rewarded with a loud very clear 1000 hz tone I could hear in all rooms of the house. My mason jar glass threads allowed me to once again tune the speaker for loudness and clarity. With a little tuning it could also reproduce a clear 400 hz tone. At 1000 hz could still hear a tone even when I reduced the tone amplitude to .9 vpp. At this point was glad I could produce such a clear tone off the original driver and metal diaphragm. Don't know how it will respond when connected to the real thing. But this also keeps me hopeful.
With compass in hand along with 9 volt battery, multimeter, and spring scale. Determined what was North and South, Positive and negative.
Since I don't yet have a working radio tried just sending a 1k tone audio from my sig gen to see if speaker would respond in any way. I know I'm not the first one, but a new adventure for me. O-scope said my 1000 hz was 20 vpp .5volt DC. Expected a very weak response from the speaker especially with my mason jar and metal band modification. Was surprised when I was rewarded with a loud very clear 1000 hz tone I could hear in all rooms of the house. My mason jar glass threads allowed me to once again tune the speaker for loudness and clarity. With a little tuning it could also reproduce a clear 400 hz tone. At 1000 hz could still hear a tone even when I reduced the tone amplitude to .9 vpp. At this point was glad I could produce such a clear tone off the original driver and metal diaphragm. Don't know how it will respond when connected to the real thing. But this also keeps me hopeful.
