aluminum can be "cast" as well as "drawn". the drawn type is usually thin, with respect to the cooling fins, where a cast type can be just about any size. aluminum is the most common metal for use as a heatsink as it has a very high temp coefficient, is easy to machine, and is cost effective from a manufacturing standpoint. magnesium would be expensive and depending on the grade would make a very nice signal flare. maybe there is some type of magnesium alloy out there, i personally have not heard of it. if you find out it is, let me know.
--- On Sat, 12/26/09, Kris Kirby <[email protected]> wrote: From: Kris Kirby <[email protected]> Subject: [Repeater-Builder] HLN1185 Heatsink Material? To: [email protected] Date: Saturday, December 26, 2009, 9:48 PM Does anyone know what the HLN1185 heatsink is made of? It is aluminum, or an odd alloy? I'm thinking it's some form of magnesium case like the X9000 (might) have. -- Kris Kirby, KE4AHR Disinformation Analyst
