[Elecraft] K2 PLL reference oscillator range test

Mon Jun 30 11:39:00 2003

I think the voltage is OK.  And don't worry too much about the 4 Mhz
setting at this stage.  You will revisit it later in the
construction/alignment.  I think the main thing to note is whether or
not it is actually oscillating.  As I recall, the instructions recommend
setting the trimmer at a certain position.  If you do that things should
be fine until later when you will do a more precise calibration.

Bruce - W8FU

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of [email protected]
Sent: Sunday, June 29, 2003 4:56 PM
To: [email protected]
Subject: [Elecraft] K2 PLL reference oscillator range test

Another question:

I just started running through the Part II assembly tests and
alignments. 
I couldn't do the 4 MHz oscillator calibration because I don't have my
external frequency counter on hand.  I then went on to the PLL reference
oscillator range test and got a range value of 13.8 kHz.  The value
should be between 9.8 and 13 according to the manual.  Is a value of
13.8 
going to be problematic?  Could I be getting an artificially high value
because I have not yet trimmed C22 as part of the 4 MHz oscillator
calibration?  I am going to recheck all of the joints in the PLL circuit
now.

Happy field day!

-Adam, N1KO

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