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Generally it's good practice to use what the builder specifies. For RF equipment, the big problem is with wirewound resistors which can add a lot of inductive reactance where it's not needed nor wanted. For low-power resistors (half-watt or so) it's probably okay to substitute metal oxide for film without any problems.
Ya that’s what I figured I’m just going to order the Film Resistors, if memory serves me correct they are more accurate and are better suited for RF environments.
It’s a 1.5M 2 watt. At least that’s what the manual and schematic says it is as it’s cracked and I can’t read it. I’m having a hard time finding one. I’m going by the parts list in the manual that refers to it as M not m if that makes sense.
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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