Re: HPF Instructions Errata
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Jerry Brown
Dave, Thanks. My kit arrived this week and I will be building before our local ham club meeting in June. I have working 4SQRP LPF built at Ozarkcon a while back. Will be giving talk and short demo with these filters. When I was at MIZZOU for masters in '69 and '70 took graduate course "DIGITAL AND SAMPLE DATA SYSTEMS" and one of my projects was using main frame to emulate/implement Chebyshev analog filter principles as digital filters. That's about the time I decided to bail out of EE for med school :-) 72/73. Jerry N4EO
On Sat, Jun 1, 2019 at 7:37 AM nm0s_qrp via Groups.Io <ai9e_qrp=yahoo.com@groups.io> wrote: A sharp-eyed builder spotted some mistakes in the 4SQRP HPF kit instructions with incorrect part numbers. In a nutshell, the proper parts values are: C1 and C5 470pF Mica, C3 is 330 pF Mica, C2 is 0.01u ceramic, and C4 is 0.0047u ceramic. The updated assembly manual and schematic, revision A, will be uploaded to the web page soon.
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