[time-nuts] PPS Divider (John Ackermann N8UR)

John Ackermann N8UR jra at febo.com
Wed Apr 1 21:56:46 UTC 2009

You could probably get those output frequencies with a custom version of 
the PIC code.  There shouldn't be any hardware changes needed, though 
the circuit board layout wasn't optimized for high frequencies so no 
guarantee on 5 MHz.

The PIC source code will be available, so anyone who wants to modify it 
for other outputs can have at it.


Mitchell Janoff said the following on 04/01/2009 05:37 PM:
> In your post, you mentioned that the TADD-2, will have six low impedance
> outputs that can be individually jumpered to 1 PPS or 10 Hz through 10 kHz
> outputs. I was wondering if there was a way to provide outputs of 100k, 1MHz
> and 5MHz (assuming a 10MHz source). I am looking for a way to use a single
> source such as a z3801 as the standard for my various counters and clocks.
> There was also a post to build this using divide by 10,2 and 5 IC's. If
> someone is going to build this circuit can they provide the schematic? If
> there multiple people interested we can have a circuit board created for
> this project.
> Thanks,
> Mitch
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