[Lowfer] MP's captures

[Eric Smith]

Hi, Bill,

> Eric, I'll lower my osc to .3000 or mybe a bit lower in a few minutes.

No need, I moved up near WE (I think heh see below).  Thanks, though.

> How do you know you are at .3003?

Unfortunately, I don't.  As you know, I don't have the gear to find out :(
I'm using the ZL1BPU dds exciter and I used one of the 12.8 MHz TCXOs 
Stewart Nelson made available early this year.  The paperwork (in Chinese) 
that came with it had handwritten "12.80003" in pen -- I've always thought 
Stewart wrote this.

ok -- bear with me ...

The exciter is adjustable NOT in 1 Hz steps -- it's resolution depends on 
the xtal frequency.  The resolution relationship is:

	Fcrystal / (9 x 2^24) Hz

So, for me that works out to 0.084 Hz steps (or .08477107021543714735 Hz 
steps, really :)

Anyway, I have a spreadsheet (from Lyle) that makes working this out easy 
so that I know what to plug into the exciter for a given frequency.  It is 
programmed with a number to be multiplied by the resolution to achieve the 
desired frequency.

Since the steps are some odd number, it works out that my frequency should 
be 185.30201.

But that all hinges on what the TCXO frequency really is.  If it is 10 Hz 
higher, my frequency would be off from where I think I have it programmed 
... it would be 185.30216.  If it is 50 Hz high, I would be at 185.30274.

So, unfortunately, I'm only hoping for the best, and won't really know 
until someone can get a capture for me.

Does that make any sense?

Regards,
Eric