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That is exactly the type of thing I'm looking for. I would like to build several different "Vintage" Noise toys. I'm on a little retro kick here but don't have any idea where to pull the schematics from. I can't remember all of the toys besides the Raygun,tweety and roger beep. What ever happened to the cool pings? the ones I hear now are not so good?
Please advise me to what is a good replacement mic for my SR-497HPC... Answer: 497 is "wired like Cobra", so many choices available. That radio does not need a power mic, so purchase a stock "coffin style" mic with a decent cord, like the ones that Astatic uses. The Superstar DM-507 is my go-to. https://www.ebay.com/itm/3050474478...adANq91JSiEEnz8EGqPJRBloTgEyaVsBoCtoMQAvD_BwE $12.99 + .99 cent shipping.
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