[Elecraft] [Elecraft_K3] Re: My K3 is Due Tomorrow 11/11/11 !

Graham Kimbell G3TCT g3tct at lineone.net
Wed Nov 16 15:57:36 EST 2011


I've just measured my a/s mat. I used two small metal boxes about 4" x 
2", spaced 3". I applied 13V thru my DMM and pressed fairly hard (thru' 
good insulation!) to get 0.2uA, giving a value of 65Mohm.  RH here is 
probably 60% or more.  Pressing lightly gives 0.1uA, the smallest the 
DMM indicates.  I think this is probably OK.

The mat is Maplin N74CR. It's £14.99
http://www.maplin.co.uk/large-anti-static-mat-99068

Graham

On 19:59, Ian White GM3SEK wrote:
> Alan Bloom wrote:
>> I agree with all Ian's comments except:
>>
>>> Almost any ani-static mat and wrist strap will be OK
>>
>> My testing has shown that not all anti-static mats are created equal. 
>> In particular, the Radio Shack portable mat P/N 276-2370 has much too 
>> high a resistance to be effective.  Here is my previous posting that 
>> includes the results of the tests and a recommendation for a suitable 
>> anti-static mat:
>>
>> http://www.mail-archive.com/[email protected]/msg94407.html
>>
>
> Thanks for the correction, Alan. Does anyone have details of ESD mats 
> that comply to similar European performance standards, and where to 
> buy them at reasonable prices in Europe?
>
>


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