Who is doing the testing? An independent lab? Who certifies the product for IP66/67 rating? Does that have anything to do with determining the MTBF rating?
On Sat, Aug 26, 2017 at 11:31 AM, <[email protected]> wrote: > They do accelerated life testing in some cases. Baking and shaking them. > Salt spray, heat, UV etc etc. And try to extrapolate the results to an > estimated MTBF. > > *From:* Kurt Fankhauser > *Sent:* Saturday, August 26, 2017 9:29 AM > *To:* [email protected] > *Subject:* [AFMUG] Manufacturer MTBF ratings and actual lifespan of > product > > Where do these MTBF ratings come from by radio manufacturers? Are they > just made up numbers the manufacturer "hopes" that the product can achieve > or is actual testing done to get to these numbers? I thought i seen a radio > once with a 90 year MTBF rating. How they hell can they determine that? The > components in the radio didn't even exist 90 years ago. > > If a radio manufacture states in the spec sheets that the radio has a 40 > year MTBF rating but then also admits that after 4 years expect to have > problems due to a design flaw, what does that mean? Is the expected MTBF > rating only good in a "lab environment" under "ideal conditions"? > > Seems to me the MTBF is just marketing fluff and actually doesn't mean > crap.... >
