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Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier
Heathkit QF-1 Q-Multiplier

Heathkit QF-1 Q-Multiplier

$ 5.28

  • Brand: Heathkit
  • Compatible Brand: Universal
  • Compatible Model: AR-3
  • MPN: QF-1
  • Seller Notes: “Untested but complete”
  • Type: Q-multiplier

Description

Fresh from an estate comes this vintage Heathkit QF-1 Q-multiplier. The QF-1 when used with a communications receiver provides additional selectivity or signal rejection as desired. Because the peak or null effect may be tuned across the receiver's IF bandpass, its operation is more flexible than that of a crystal filter. It may be used with a receiver which already has a crystal filter to obtain two simultaneous functions. The QF-1 requires very little power in either filament AC or B+, consequently it can derive its power from any receiver without overloading the receiver power supply. The QF-1 is not designed for any specific receiver. The manual does mention using it with the Heathkit AR-3, which is the only Heathkit receiver found in the estate, so it's likely that it is wired for that receiver. It has not been tested in any way and is offered as-is. Please see the photos to judge the condition for yourself. 3006 B12