[R-390] R-390A Cost Reduction and Improvements (was dead
horse Hi)
Roy Morgan
[email protected]
Wed, 11 Jun 2003 16:05:09 -0400
At 12:37 PM 6/11/03 -0700, Joe Foley wrote:
>Ok, so what's the recipe, ala R-390 style, for an LC
>filter?
Would be coil winders,
Just look at the design and construction of the R-390 non-A IF
section. Start there.
Thrree or four stages of very carefully designed, built, and tuned "double
tuned inductively coupled" IF amplifiers.
See Radiotron Designers Handbook, 4th Edition to get a start on the theory
and practice. Then see Valley and Wallman's RadLab book: Vacuum Tube
Amplifiers for stagger tune methods, if you wish.
Roy
- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254, Fax: 301-948-6213
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