[time-nuts] 100 MHz decade Divider II

millerke6f at aol.com millerke6f at aol.com
Sun Dec 1 22:40:38 UTC 2019


Send me your snail mail address and I'll send you a pcb with a 12080 attached with regulator chip etc.  Just attache power input and output leads and you have a nice  divide by 10 prescaler on a 1/2 inch by 1.5 inch pcb.  Glad to help
Bob, KE6F


-----Original Message-----
From: Perry Sandeen via time-nuts <time-nuts at lists.febo.com>
To: time-nuts <time-nuts at lists.febo.com>
Cc: Perry Sandeen <sandeenpa at yahoo.com>
Sent: Sat, Nov 30, 2019 10:01 pm
Subject: [time-nuts] 100 MHz decade Divider II

Yo Bubba Dudes!,
Thanks to all who replied.
Gerhard, besides giving me voluminous component information asked a number of good questions so I thought the list might be interested.
First I'm going to use dip components as I'm unable to use any of the cad programs for PC circuit design. If one could do a PC board design AND was happy using SOT components that would be the  way to go being smaller and less expensive. By doing it the *obsolete way* I have a way to build that fits my skills level.
From 

I'm going to use used Wenzel OCXO's as they're stable and have EFC plus I'm able to wire them.  The reason for these oscillators is that out of each phase detector I'll have an error multiplication of 10X.  So the second stage makes it 100X and the third stage would be 1,000X
So with this amount of error multiplication I want an extremely stable un-temperamental Oscillator whose error will just caused by the EFC.
For my decade divider I'm going with the 74AS161N which is about $5 from Mouser but less than $2 on ebay.
>From Gerhard's and other list comments I'd never choose Morion oscillators.  My plan it to buy the oscillators from the vendor RF-Buy in China.  IIRC he's been around for over 10 years with a good reputation.  Another factor from buying from his is that he has stock in depth which indicates to me he's a serious source.I'm attaching my rough conceptual schematic toshow what I'm trying to achieve.  Comments appreciated.
Regards,
Perrier


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