[Elecraft] K2 Audio Output Mod

[Don Wilhelm]

Ariel,

There are very few places to check resistance.  You should find a high 
resistance at all pins of the LM386 (except perhaps pin 6 which is the 
voltage rail and pin 4 which is ground.

Note that all other pins have a capacitor and that will stop DC 
continuity - therefore giving a high resistance reading.
The best way to check it is to apply a sine wave (tune to a steady 
carrier) to the input and look with a 'scope at pins 2, 3 and 5.

73,
Don W3FPR

On 10/11/2012 10:30 AM, Ariel Jacala wrote:
> Using the N0SS printed circuit board I am using the plans Don Wilhelm published in August 2009.  Are there resistance checks I can do to assure myself that I did an acceptable solder job?  My eyes and manual dexterity have deteriorated to a point that a 10x visual examination by myself assures me that things will work as planned.
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> Ariel NY4G
>
>