K2 Audio Output Mod

[ny4g]

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.

Ariel NY4G

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[ny4g]

The last sentence should have stated "does not assure me ......"

Ariel NY4G

Sent from my iPad

On Oct 11, 2012, at 10:31 AM, "Ariel Jacala" <[hidden email]> 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.
>
> Ariel NY4G
>
> Sent from my iPad
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

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[Don Wilhelm-4]

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.
>
> Ariel NY4G
>
>

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