In this video we'll look at the Heathkit QF-1 Q Multiplier. I'll review the history of the unit and it's features, and take a look at it inside and out.
There is no reason you can't implement a Q multiplier with transistors, but by the 1960s crystal and ceramic IC filters allowed receivers to be more selective and Q-multipliers were no longer popular, so when radios went solid-state they were no longer used.
Thanks for posting and happy new year
HEATHKIT were good radios. I remember getting the catalog in mail……and wishing I, a 12 y/o , could afford one.
Happy new year! And thanks for sharing.
Are there any Transistorized Q multiplier devices?
There is no reason you can't implement a Q multiplier with transistors, but by the 1960s crystal and ceramic IC filters allowed receivers to be more selective and Q-multipliers were no longer popular, so when radios went solid-state they were no longer used.