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FM Alignment and Servicing of Valve Receivers

From Practical Wireless in 1955.

In 1955 FM was a new addition to the valve receiver. This is an interesting writeup from theat time which explains the procedure for aligning FM and also servicing of the new section.
It covers checking the FM Discriminator section. The IF's and the RF and Frequency Changer sections plus the Ratio Detector.

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Last updated 10.5.2006

2003-2006 © Maurice Woodhead