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The SWR after the amp with it on sounds like there is a problem. I would not run it at an SWR of 2.5 because you will run the risk of damage. Just to be clear about the Dosy though, are you calibrating it with the amp on before you check? When you set it to the CAL mark, it adjusts the reading for the power that is going through it.
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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