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A vertical properly mounted and grounded to the aluminum sounds like a winner. A SS 102" would probably work quite well with that much groundplane directly under it.
Almost all tubular metal antennas are built from aluminium tubing. So what's the problem?
The main issue is not whether the aluminium is good for a RF ground, it's about the physical strength of the bodywork to support a mount with an antenna on 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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