Pentagrid Converter
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The pentagrid converter was a radio receiving valve (vacuum tube) with five grids used as the frequency mixer stage of a superheterodyne radio receiver. Grids of a 12SA7GT Pentagrid converter showing all 5 grids. The pentagrid was part of a line of development of valves that were able to take an incoming RF signal and change its frequency to a fixed intermediate frequency which was then amplified, and detected in the remainder of the receiver circuitry. The device was...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The pentagrid converter was a radio receiving valve (vacuum tube) with five grids used as the frequency mixer stage of a superheterodyne radio receiver. Grids of a 12SA7GT Pentagrid converter showing all 5 grids. The pentagrid was part of a line of development of valves that were able to take an incoming RF signal and change its frequency to a fixed intermediate frequency which was then amplified, and detected in the remainder of the receiver circuitry. The device was generically referred to as a frequency changer or just mixer.
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