View Single Post
Old 7th Oct 2022, 9:16 am   #9
inaxeon
Pentode
 
Join Date: May 2022
Location: Odiham, Hampshire, UK.
Posts: 125
Default Re: Does anyone know anything about "Modulation Depth"? (Philips PM5680)

Quote:
Originally Posted by marceljack View Post
Quote:
Originally Posted by wd40addict View Post
FM audio deviation is normally 75kHz, at least on the 88-108MHz band.
For 625 lines standards (B/G, I, D/K) the max deviation is +/- 50 kHz.
For 525 lines standard M (NTSC) it is +/- 25 kHz (sound carrier at + 4,5 MHz).
Would it be fair to say then, that the "pot" on the front panel is setting the frequency deviation of the maximum representable AF amplitude (as you state 50KHz in this case)?
inaxeon is offline