[Jayce]

Yep, the 12DT8 is the tube for FM and at least in Zeniths is worn out because they shut the plate off when you switch to AM, but leave the filament on. Not sure if the Westinghouse does that. In a way, I prefer the 12DT8 to the 12AT7 as it is a radio only tube and you aren't battling musicians and audiophiles for supply. The cheapest NOS 12AT7 on Tube Depot right now is roughly $25 while a NOS 12DT8 is $10. Probably better deals out there, but that was just a quick sample. Either way, I have wanted a nice Westinghouse AM-FM for a while and other than some wear and a couple of dings, this radio is in very nice shape if it has spent its life in NE Ohio. The plastic is so white that I think this radio saw very little or no cigarette smoke.