This circuit was found in a 1980s documentation. It decodes by identifying a certain frequency tone that depends on the R2 setting on the PLL. The circuit is from the 80's and the PLL should not be powered by voltage of more than 10 V.
This circuit was found in a 1980s documentation. It decodes by identifying a certain frequency tone that depends on the R2 setting on the PLL. The circuit is from the 80's and the PLL should not be powered by voltage of more than 10 V.
