[Elecraft] K2 low resistance at pin 8 U6 rf board.
John
ve7day at crcable.net
Thu Jan 29 16:37:28 EST 2009
Hello all K2 users.
I'm trying to track down a problem on the rf board.
Pin 8 of U6 shows a resistance of approx 50 ohm when it's supposed to be greater than 100 ohms.
I've gone ahead and assembled the rest of the kit and I am not happy with the amount of current
it draws, approx 240 mils.
I notice that when listening to WWV at 10 megs if I hit the "dit" key, the current drops to 160 mils.
Anyone else see that?
I wonder what part of the circuit is dropped when the key is closed and if it's the 8B line, (where I'm
seeing the low resistance.)
I know I can use it the way it is but it's really not what I'd like to use if it draws more current than it's
supposed to.
Don and Gary have offered advice and I wonder if anyone else could shed more light on
locating the problem of low resistance.
Nothing is getting overly warm, that I can find.
Thanks.
John.
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