Posted by
michael taylor-3 on
Nov 23, 2007; 9:44pm
URL: http://elecraft.85.s1.nabble.com/K2-AGC-Threshold-Too-Low-tp367004p367017.html
On Nov 23, 2007 3:53 PM, Sarah K. <
[hidden email]> wrote:
>
> I'm Sarah, AF6FH! I just got my license a couple weeks ago, and I'm
> now assembling K2# 0622, which will be my first HF radio. I started
> assembly on Wednesday night, and so far, everything's been going just
> fine.
Congrats, and welcome!
> I did my voltage measurements with my own (cheap) DMM, not the
> internal voltmeter.
Maybe a silly question, but is the DMM's batteries fresh? If it has
the half-dead cheap old batteries that it came with, the reading may
be off a bit too much.
A sanity check of comparing the measurement to ones done using the
internal voltmeter could help detect if that is the problem if you
don't have a fresh battery on hand.
> I measured the voltage on the LM29307-8, and it has 12.23V at the
> input, but only 7.53V at the output. The 78M05 has 4.93V at its
> output.
I would expect closer to 8V out of the LM2930T-8 but it is with spec
(7.5-8.5V from the LM2930 datasheet), and the input voltage is fine
(should only need 8.6 or 9V input to work correctly.
-Michael, VE3TIX
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