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Old 20th Oct 2017, 8:23 pm   #17
Join Date: Nov 2011
Location: Surrey, UK.
Posts: 2,596
Default Re: What type of capacitor for R.F. decoupling ?

I was intrigued by the frequency range, too- I recall in one of my dad's "pilot's notes" was a summary of SBA receivers of this vintage and similar operating frequency range including a picture of a hand-cranked remote tuning box mounted at one side of the cockpit.

I was a bit sceptical of just how good those olde-worlde paper-and-foil caps would be at these frequencies as well- look for "extended foil" in the specs. of replacement candidates, meaning parallel gathered and connected end-foil and hence low-inductance connections at each end. Not sure how universal this connection method is amongst plastic film caps, or if e.g. Mullard "mustards" are like this.
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