What were the most commonly used IF frequencies for 405 TV?

[Geordie McBoyne]

Earlier versions of the Pye V4 and VT4 had 16 and 19.5Mc/s IFs.
Later production VT4 and VT7 models have the BREMA intermediate frequencies of 34.65 and 38.15Mc/s.

Geordie McBoyne.