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Uhf television tuner
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Turret tuner with flat spiral coils
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Rotary winding machine
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Bilateral parametric amplifier
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Television fm tuner converter
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High efficiency triode vacuum tube
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Frequency selector
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Frequency modulated crystal generator
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Convertible vhf television tuner
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Compact vhf television tuners
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Fixed frequency amplifier
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Tuner for television receivers
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Oscillator fine tuning device
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Neutralizing circuits
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Multi-band high frequency circuits
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Neutralizing circuits
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Television tuner mechanisms
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Digital recording system
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Electrical fine tuning device
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Electrical wafer switches
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