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Several years ago, I bought a VHF frequency meter, that I did not need. However, the price was $5, and I thought the power supply was worth that. I Already had a BC-221 frequency meter, and this power supply is the actual AC supply for the 221.I plan to use the 221 for checking frequency…
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This receiver came with a 24v Dynamotor. The firsdt thing to do was relube the bearings. I bought a 24v switching power supply to provide the proper voltage for the Dyanmotor. I am in the process of recapping this receiver. I have already replaced the six capacitors that are mounted directly behind the front panel.…
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“The converter to be described was designed for working into the Type BC-453 aircraft receiver, commonly known as the “Q5-er.” The combination of converter and receiver gives a high-stability, high-performance, accurately- calibrated c.w. or ‘phone receiving system of extremely small dimensions. As shown, it will tune over the 80- and 40-meter bands, and methods for extending…
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I started building this receiver from a February 1941 QST article, using the first schematic diagram. Upon finding the article again (after losing it) I see this circuit diagram.