Thursday, September 03, 2009

Signal Currents...

This is National Radio Institute booklet 20FR-3 "How Signal Currents are Kept in Correct Paths." It's another highly technical 29 page tome. Bizarrely the booklet opens with a plea for healthy eating habits. Then thankfully it segues gently into a long piece on simple condenser filters.

Also covered: shielding, conversion error, grounding, EMI, RFI, magnetic fields, and all manner of hurdles to clear. The technical limbo bar peaks at the superheterodyne receiver as it rightly should.

You can get all 17.7 MG if you