UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Full-Range IF Selectivity; The Hammarlund Variable Crystal Filter

Bazz4CQJ · 26th Dec 2022, 3:53 am

The filter being discussed is indeed used in the SP600, which I think went in to production in 1957, and according to radiomuseum.org, continued to 1971??

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26th Dec 2022, 3:53 am	#8
Bazz4CQJ Dekatron Join Date: Apr 2009 Location: Oxfordshire, UK. Posts: 4,934	Re: Full-Range IF Selectivity; The Hammarlund Variable Crystal Filter The filter being discussed is indeed used in the SP600, which I think went in to production in 1957, and according to radiomuseum.org, continued to 1971?? B __________________ Saturn V had 6 million pounds of fuel. It would take thirty thousand strong men to lift it an inch.