Well, with a thing like this i think the execution and the final result is what counts.
You have to use a combination of filters automated from 300hz-2000hz to 40hz-18khz or something, than use some tube/amplifiers to increase the loudness and harmonic distorsion, than some mono to stereo automation, maby some reverb. Maby put some noise that gets bigger and that way creates the illusion of bigger sound. Or you can start with the original sample. You make one radio weak sample and one warm analog fat harmonic sample than you mix automate these two without flange-ing them ...i dont know