Heathkit HD-11

Q Multiplier Model HD-11

Newer version of the older Model QF-1. Has built in power supply and runs on 105-125 volts AC 50/60 Hz When used with a communications receiver, provides additional selectivity or rejection as desired. Because the peak or null effect of the Q Multiplier may be tuned across the receiver's IF bandpass, its operation is more flexible than that of a crystal filter. The Q Multiplier may be used with a receiver that already has a crystal filter to obtain two simultaneous functions. For example, the receiver's crystal filter could be used to peak the desired signal and the Q Multiplier used to null an adjacent signal. Selling as-is no returns. Operating Frequency ........................... 450-460 kc Operation ....... OFF-SHARP PEAK-NULL-BROAD PEAK Tube Complement ................................... 12AX7 multiplier Power Requirements 6.3 volts AC 300 ma, 150-250 volts DC 2 ma Sold as-is, no returns.

Price: $42.95

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