but i did that... and i didn't get no radio card, i got the EXP thingy and if i did get the radio thingy i have no clue where it is...
If you:
-Found the machine part
-Gave it to the Power Plant manager
-Then talked to the Radio Tower manager
You should have it
Just go into your Poke Gear, and change the radio channel to the Pokeflute music, then walk up to Snorlax and press A