[Elecraft] Day 1: Fried something already?

Don Wilhelm w3fpr at embarqmail.com
Sun Nov 7 13:52:46 EST 2010


  Owen,

Armed with that further information, I suspect the relay contacts.  
Examine the inductors anyway to see if there is any evidence of charred 
turns, if so, re-wind them.

You can check the relay contacts of K12 with an ohmmeter.  If you set 
the K2 to 40 meters, Relay K12 should be in the position opposite that 
shown on the schematic.  That means continuity between pins 7 and 8, and 
3 and 4  - be aware that at DC, the entire low pass filter will measure 
as a short to ground unless you lift lead # 3 or #4 from T4.  Many have 
drawn false conclusions because of this DC path to ground.

On 11/7/2010 1:37 PM, Owen B. Mehegan wrote:
> I just tried the test for the inductors. With no antenna attached, I
> read 1.7k ohms from antenna center conductor to ground (tuned 40
> meters, then powered off). I am able to read continuity across L25 and
> L26 though...
>
> I think I can borrow a Fluke meter from a friend which can test
> capacitors, so I'll try to do that.
>


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