[Lowfer] MP's captures

Eric Smith [email protected]
Sun, 5 Oct 2003 07:05:07 -0500 (CDT)


Hi, Stewart,

> Yes, I did attempt to measure the frequency and write it on the
> datasheet.  But I thought that it was written down to the
> nearest Hz, e.g. 12.800030 or 12.800003 .  So if it says 12.80003,
> then I messed up, and that may not be what was measured.
> And I also failed to keep a backup record.  My apologies.

Excellent!  I _thought_ that was you who wrote that.  Just wanted to say 
that you DID write it to the nearest Hz...if I left a zero out in one of 
my emails, it was a mistake.  You wrote 12.800003, which is the value I've 
been using.  Thank you again for the TCXO.

> But it should not be too hard to accurately determine the frequency.
> Just turn off the final, set the DDS to output something near WWVB or
> a strong LORAN line, and compare with ARGO.

My receiver only tunes down to 185 kHz, BUT:

> so you can make things much worse if you're not careful.  If you get
> way off, you can set your DDS so that a harmonic lands on e.g. 10 MHz,
> and zero beat it with WWV.

THAT is a good idea.  I'll try that.  I won't be fiddling with the manual 
adjustment, though (since you measured it and recorded to the nearest Hz) 
but I WILL try the zero-beat idea, and see what I come up with.

Thanks again, everyone,
Eric