Edd, a while back you described bending a corner of a plate of the variable capacitor, so that it would short out RF. This renders a radio silent so that an external audio source can be plugged in.
You called it 'peaning' as in hitting it with a ballpean hammer, I guess.

I couldn't bring myself to bend a capacitor plate on the Airline 62-84, so I came up with an alternative. I bent a piece of solid hookup wire into a hairpin, slipped it onto the outer edge of a plate of the capacitor, and anchored it there with solder. Now if the radio is tuned to below 500 khz, the plate shorts to ground and the radio cuts out. I've run an RCA socket on a cord thru a hole in the chassis, so no alterations were done to the radio, but it can now play whatever.

I have found for impedance matching, a small output transformer matches a CD walkman to the radio nicely, CD player to the secondary, primary to the radio.

Anyway, thanks Edd, for the inspiration, and the little story about how you pedaled your bike around hooking phono jacks to people's radios.

Wow. What a great idea!

I will have to try this!