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Bazz4CQJ · 17th Oct 2017, 11:27 pm

Anyone thinking about building a wobbulator might also like to take a look at the design published in Radio Bygones #82 (April/May 2003) by Raymond Haigh. This has four switched ranges for frequencies from 400kHz to 14MHz (it can be built with just the 450-460 range) and uses a pair of 2N3819. The 8 page article gives good constructional details (inc pcb layout) and describes the use of a wobbulator quite nicely.

B

17th Oct 2017, 11:27 pm	#23
Bazz4CQJ Dekatron Join Date: Apr 2009 Location: Oxfordshire, UK. Posts: 4,934	Re: 'I.F Alignment Aid' Anyone thinking about building a wobbulator might also like to take a look at the design published in Radio Bygones #82 (April/May 2003) by Raymond Haigh. This has four switched ranges for frequencies from 400kHz to 14MHz (it can be built with just the 450-460 range) and uses a pair of 2N3819. The 8 page article gives good constructional details (inc pcb layout) and describes the use of a wobbulator quite nicely. B __________________ Saturn V had 6 million pounds of fuel. It would take thirty thousand strong men to lift it an inch.