Quote:
Originally Posted by old_coot88
Correct. The actual aural carrier as received over the air is 5.5mhz higher (instead of 4.5mhz higher) than the picture carrier. That's what generates the 'intercarrier'. In superhet parlance, the intercarrier is the Intermediate Frequency or heterodyne between the two carriers, that difference signal appearing in the output of the V detector.
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Oops I read the post "4.5" and in my head saw "41.25," the sound IF fequency of the American system. Assuming the set is still tuned so the PAL video IF frequency is 45.75 (same as American system), the PAL audio will be 40.25 (45.75 - 5.5). You will need IF response at 40.25 to be about the same as it currently is at 41.25.