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what I did was put a 47k ohm in the r37 spot, and 10uf on c51. i also replaced the 5.6k at r31 with a 3.3k to increase the mic gain. so we're up from 10w PEP to a nice clean 18-19 from a 5wdk on a stock final. so i think that's what im gonna go with on this weekend project. i havent even fine-tuned the predriver, driver, or final yet
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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