K2 RF board, phase 2 resistance checks

[Jeff Kinzli]

Hey Guys,

Ok, I'm at phase 2 of the K2's RF board resistance checks.

Everything looks good, except U10, pin 8. For this check, the manual says ">500 ohms", but for me, it's like 10Mohms. The rest of the checks (in this phase of tests) where pretty close (like if it said >500 ohms, it would be 2.5k or so.

Is this anything to worry about, or is that within what's expected?

The rest of the checks are FB.

Thanks,
-J
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Don Wilhelm-3]

Jeff,

Do you have the Control Board plugged in when you did those measurements?
If not, plug it in and remeasure.  If your control board was in place, do a
resistance measurement from RF Board U10 pin 8 to the collector of Q1 on the
control board - if you measure more than 820 ohms, look for the unsoldered
connection - you did install R91 did you not, and is R91 820 ohms?

73,
Don W3FPR

> -----Original Message-----

>
> Ok, I'm at phase 2 of the K2's RF board resistance checks.
>
> Everything looks good, except U10, pin 8. For this check, the
> manual says ">500 ohms", but for me, it's like 10Mohms. The rest
> of the checks (in this phase of tests) where pretty close (like
> if it said >500 ohms, it would be 2.5k or so.
>
> Is this anything to worry about, or is that within what's expected?
>
> The rest of the checks are FB.
>
> Thanks,
> -J

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com