Didn't pre-war TV sets in the USA use AM for the sound and 441i line scanning, at 30Hz (60hz fields)? Modern analog NTSC TV uses FM and 525i at 30Hz frames (60Hz fields). So you'd have to change the horizontal oscillator to run a little faster. And change the sound detector and maybe the sound IF frequency, to receive modern analog TV.
If you wanted a crude simulation of what 441i B&W TV reception would have looked like, you could take a regular NTSC B&W set and set the vertical height 20% too tall (20% overscan) so you'd see only 80% of the scan lines of NTSC to fake the number of scan lines a 441i set would have shown. Maybe make the horizontal overscaned some to avoid excessively skinny actors on TV shows. Or you could defocus the CRT beam a little instead. As for the sound, if in fact it was AM, rig an AM detector in addition to the FM demodulator on the sound IF. You should hear some video buzzes from the AM detector. Mix, as in an audio adder (mixer) circuit a little of that to the output of the FM demodulator. basically you would be degrading the FM quality to simulate crappy AM....
