Alan if you call the fire department about a cat up a tree they will ask if you have ever seen a dead cat in a tree inferring that the cat will find its own way down from the tree without help.
If the resistance and maintenance of the mat are so critical don't you think we would reports of dead mats by now? 73 Fred, AE6QL -----Original Message----- >From: Fred Townsend <fptowns...@earthlink.net> >Sent: Apr 6, 2014 9:24 PM >To: Sam Morgan <k5oai....@gmail.com>, elecraft@mailman.qth.net >Subject: Re: [Elecraft] Anti Static Mats > > >I was once asked if the mats on my assembly line were antistatic. I thought >they were but I wasn’t sure since I didn’t buy them. The mats took a beating >and only lasted a year or two. Some were new and some were in tatters. I >flipped over a new mat. It clearly said antistatic but the older mats didn’t >have any labels and they looked different. I took an ohmmeter, stabbing the >probes in about an inch apart. No reading. No reading for the new mats or the >antistatic bags we used by the thousands. After rubbing with fur, a >triboelectric meter (a meter used for measuring static charge) was used on the >mats and bags without measuring a charge. > >My conclusion was surfaces could be antistatic without measuring any >resistance. Same for bags. If you have one from your Elecraft kit, try >measuring it with an ohmmeter. >73 >Fred, AE6QL > > >-----Original Message----- >>From: Sam Morgan <k5oai....@gmail.com> >>Sent: Apr 6, 2014 7:21 PM >>To: elecraft@mailman.qth.net >>Subject: Re: [Elecraft] Anti Static Mats >> >>oops never mind, I just reread the pdf on the Sierra FS and it's made in >>China, where as the Desco is made in the US (or so they say) >> >>On 4/6/2014 9:00 PM, Alan Bloom wrote: >> >>> I recommend against using a mat that has no specifications other than >>> asserting it is an "anti-static mat." I found that the two I bought and >>> tested both had too high a resistance to do any good. >> >>-- >>GB & 73 >>K5OAI >>Sam Morgan > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
