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

[Kalee20]

I've got an idea that one of the early Bush VHF radios used an IF of 19.5MHz. It starts to make a bit of sense now - maybe Bush already had 19.5MHz IFT's for its televisions, and just repurposed them for the new radio.

Though, it also seems rather unlikely at the same time...