Expander 160 Crystal Oscillator and Switch Construction, Installation & Operation manual eBook

The EXPANDER 160 is a compact crystal oscillator unit which allows remote controlled selection of up to four different crystals. This provides new injection signals for loop mixing in PLL synthesizer circuits, or additional synthesizer frequencies in 23-channel CB transceivers. A unique system of wire jumpers allows the EXPANDER 160 to be used solely as a crystal switch, with the oscillator circuit disconnected. This configuration is needed for all 23-channel crystal-synthesized radios, and all 40-channel PLL radios whose crystal frequency is doubled or tripled before mixing with the VCO signal. See the Schematic Diagram on Page 9. The EXPANDER 160 consists of a Colpitts oscillator, bipolar buffer stage, a diode switching array, and various jumper wire options. Find out about the Expander 160 Crystal Oscillator and Switch Construction, Installation & Operation manual ebook at link below.


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