At 4/17/2007 17:10, you wrote: >A few years ago I designed a dual level squelch circuit that could be a >replacement for the Micor type carrier squelch. I built a couple of the >prototypes and put them into service, and they worked very well, you >really couldn't tell them from the real thing. > >They were designed around readily available and cheap parts, so >replicating it would be very easy. I think total parts costs would be >around $5, not counting the board. > >If anyone is interested, I can supply a PDF of the schematic, or upload >it to the site.
Yes, I'd like to see it. I tried designing a bi-level squelch back in the '80s, but it never worked right. Didn't really have a deep enough electronics design background back then to design it right (op amps, BJTs & reed relays - yuck!). Bob NO6B
