Re: K1 15 Meter Capacitors on 2-Band Filter Board
Posted by
Mike Morrow-3 on
May 04, 2007; 1:31am
URL: http://elecraft.85.s1.nabble.com/K1-15-Meter-Capacitors-on-2-Band-Filter-Board-tp446841p446842.html
>...The table shows C17 & C19 as 56, but the components I
>have are labeled 560J. Do I have the right capacitors
There's a very good summary of capacitor marking conventions at:
http://xtronics.com/kits/ccode.htmThere's some interesting non-obvious conventions to this marking system. Most know that a capacitor marked ABC is equal to AB x 10^C pF. So yours are 56 x 10^0 = 56 pF. Similarly, 562 would be 56 x 10^2 = 5600 pF.
So what would 569 be? Not 56 x 10^9 or 56000000000 pF, as you might think, but actually 56 x 0.1 = 5.6 pF. When the third digit is 9 the multiplier is 0.1. When the third digit is 8, the multiplier is 0.01. You'd be surprised how few know that.
The J on your caps is the code for the value tolerance in percent. All this is explained on the web site cited above.
73,
Mike / KK5f
(Sorry this topic isn't about the K3...not!)
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