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17th Sep 2018, 2:22 pm

My A22 does sound better from my SSTRAN 'modulator' (wide band AM) than from off air, no brick wall filtering just a smooth low pass from the IF (intermediate frequency) filtering. I suppose it is that a little of the high frequencies get through and there is no horrible phase shift at the end of the brick wall.

17th Sep 2018, 2:22 pm	#66
Guest Guest Posts: n/a	Re: Historic AM audio quality My A22 does sound better from my SSTRAN 'modulator' (wide band AM) than from off air, no brick wall filtering just a smooth low pass from the IF (intermediate frequency) filtering. I suppose it is that a little of the high frequencies get through and there is no horrible phase shift at the end of the brick wall.