Re: [time-nuts] 100 MHz decade Divider II
Am 01.12.19 um 23:40 schrieb Bob via time-nuts: From Gerhard's and other list comments I'd never choose Morion oscillators. I did not want to belittle Morion. In fact, their current crop is top notch. But an oscillator that has spent 20 years on a cell phone tower and that has cooked it's innards at 80°C for this time may have drifted away or fail some specs. Esp. when it looks like having been removed from its old home with hammer and sickle. regards, Gerhard ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] 100 MHz decade Divider II
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 To: time-nuts Cc: Perry Sandeen 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 ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] 100 MHz decade Divider II
Hi Indeed the filtering / noise shaping aspect of these devices is what ultimately drove them off of most test benches. That was still taking place on a few benches back in the early 70’s (when I first started doing this stuff …). There were still enough of them running around that it was pretty easy to set up a demo of “this one does not read the same as that one”. Bob > On Dec 1, 2019, at 6:24 AM, Azelio Boriani wrote: > > In my opinion, those PLLs should be made unusually fast to have a fast > response from input to output. There is also the EFC low pass response > of the OCXOs. > > On Sun, Dec 1, 2019 at 7:01 AM Perry Sandeen via time-nuts > wrote: >> >> 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 >> >> >> >> ___ >> time-nuts mailing list -- time-nuts@lists.febo.com >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] 100 MHz decade Divider II
In my opinion, those PLLs should be made unusually fast to have a fast response from input to output. There is also the EFC low pass response of the OCXOs. On Sun, Dec 1, 2019 at 7:01 AM Perry Sandeen via time-nuts wrote: > > 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 > > > > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
