The reciever is now drawn up in expressPC. Will add in the dividers to another drawing I simply could not get it all in the same schematic. Not that there is a lot expressPC has sizing limitations. I know there is better... Just no time to tinker. Its going to be interesting getting the schematics into a word or pdf doc. Will repond to other comments. But for Atilla the issue with simple stuff like doubler dividers is simply noise and competition from MSF. Regards Paul On Sat, Mar 30, 2013 at 11:12 AM, Bob Camp <lists@rtty.us> wrote: > Hi > > I think it's pretty safe to say that the Vectron part mentioned is a VCXO > with a crystal as the resonator. Indeed a ceramic resonator or an L/C > resonator part would have a bit more drift and lower Q than a crystal based > part. I would not try something like this with anything other than a > crystal based part. At least as far as the commonly available stuff goes. > I'm sure you could make it work with a hydrogen maser as the frequency > source and a bit of DDS magic... > > Bob > > On Mar 30, 2013, at 10:23 AM, Jim Lux <jimlux@earthlink.net> wrote: > > > On 3/29/13 9:01 AM, Bob Camp wrote: > >> Hi > >> > >> Too much tuning range is easy enough to fix. Use a pot to set it on > frequency and then hook it to the rest of the "stuff" with a fixed > resistor. The gotcha would be if the poor thing drifts so much that it > *needs* the wide range to stay in lock. > >> > >> My guess is that you could buy a hundred VCXO's at auction for less > than the cost of trying a dozen samples. > >> > > > > wide tuning range VCOs have lower Q resonators, so the "outside the loop > BW" noise will tend to be worse. > > > > The other problem I have found is that wide tuning range VCOs tend to > drift more (that is, with a constant input voltage, their frequency changes > more as they warm up or otherwise change temperature). > > > > It's a matter of sitting with the online order site open in one window, > and the Vectron or whoever website open to their catalog in another and > going back and forth comparing part #s.. > > > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

Hi The "easy" way to get to pdf is normal a pdf translator loaded as if it's a printer. Anything that will print can (at least in theory) be translated to a pdf by this approach. In real life, nothing is ever perfect, but I've had good luck with them. Bob On Mar 30, 2013, at 5:41 PM, paul swed <paulswedb@gmail.com> wrote: > The reciever is now drawn up in expressPC. Will add in the dividers to > another drawing I simply could not get it all in the same schematic. Not > that there is a lot expressPC has sizing limitations. I know there is > better... Just no time to tinker. > Its going to be interesting getting the schematics into a word or pdf doc. > Will repond to other comments. But for Atilla the issue with simple stuff > like doubler dividers is simply noise and competition from MSF. > Regards > Paul > > > On Sat, Mar 30, 2013 at 11:12 AM, Bob Camp <lists@rtty.us> wrote: > >> Hi >> >> I think it's pretty safe to say that the Vectron part mentioned is a VCXO >> with a crystal as the resonator. Indeed a ceramic resonator or an L/C >> resonator part would have a bit more drift and lower Q than a crystal based >> part. I would not try something like this with anything other than a >> crystal based part. At least as far as the commonly available stuff goes. >> I'm sure you could make it work with a hydrogen maser as the frequency >> source and a bit of DDS magic... >> >> Bob >> >> On Mar 30, 2013, at 10:23 AM, Jim Lux <jimlux@earthlink.net> wrote: >> >>> On 3/29/13 9:01 AM, Bob Camp wrote: >>>> Hi >>>> >>>> Too much tuning range is easy enough to fix. Use a pot to set it on >> frequency and then hook it to the rest of the "stuff" with a fixed >> resistor. The gotcha would be if the poor thing drifts so much that it >> *needs* the wide range to stay in lock. >>>> >>>> My guess is that you could buy a hundred VCXO's at auction for less >> than the cost of trying a dozen samples. >>>> >>> >>> wide tuning range VCOs have lower Q resonators, so the "outside the loop >> BW" noise will tend to be worse. >>> >>> The other problem I have found is that wide tuning range VCOs tend to >> drift more (that is, with a constant input voltage, their frequency changes >> more as they warm up or otherwise change temperature). >>> >>> It's a matter of sitting with the online order site open in one window, >> and the Vectron or whoever website open to their catalog in another and >> going back and forth comparing part #s.. >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

Documents written and will convert to adobe later today. However the doc is 300KB in size and does not even contain pictures and strip charts so the time-nuts mailbox won't accept that. Several of you in the past have been kind enough to offer to host the file. If you can directly email me please I will send the file to you directly. Regards Paul WB8TSL On Sat, Mar 30, 2013 at 6:09 PM, Bob Camp <lists@rtty.us> wrote: > Hi > > The "easy" way to get to pdf is normal a pdf translator loaded as if it's > a printer. Anything that will print can (at least in theory) be translated > to a pdf by this approach. In real life, nothing is ever perfect, but I've > had good luck with them. > > Bob > > On Mar 30, 2013, at 5:41 PM, paul swed <paulswedb@gmail.com> wrote: > > > The reciever is now drawn up in expressPC. Will add in the dividers to > > another drawing I simply could not get it all in the same schematic. Not > > that there is a lot expressPC has sizing limitations. I know there is > > better... Just no time to tinker. > > Its going to be interesting getting the schematics into a word or pdf > doc. > > Will repond to other comments. But for Atilla the issue with simple stuff > > like doubler dividers is simply noise and competition from MSF. > > Regards > > Paul > > > > > > On Sat, Mar 30, 2013 at 11:12 AM, Bob Camp <lists@rtty.us> wrote: > > > >> Hi > >> > >> I think it's pretty safe to say that the Vectron part mentioned is a > VCXO > >> with a crystal as the resonator. Indeed a ceramic resonator or an L/C > >> resonator part would have a bit more drift and lower Q than a crystal > based > >> part. I would not try something like this with anything other than a > >> crystal based part. At least as far as the commonly available stuff > goes. > >> I'm sure you could make it work with a hydrogen maser as the frequency > >> source and a bit of DDS magic... > >> > >> Bob > >> > >> On Mar 30, 2013, at 10:23 AM, Jim Lux <jimlux@earthlink.net> wrote: > >> > >>> On 3/29/13 9:01 AM, Bob Camp wrote: > >>>> Hi > >>>> > >>>> Too much tuning range is easy enough to fix. Use a pot to set it on > >> frequency and then hook it to the rest of the "stuff" with a fixed > >> resistor. The gotcha would be if the poor thing drifts so much that it > >> *needs* the wide range to stay in lock. > >>>> > >>>> My guess is that you could buy a hundred VCXO's at auction for less > >> than the cost of trying a dozen samples. > >>>> > >>> > >>> wide tuning range VCOs have lower Q resonators, so the "outside the > loop > >> BW" noise will tend to be worse. > >>> > >>> The other problem I have found is that wide tuning range VCOs tend to > >> drift more (that is, with a constant input voltage, their frequency > changes > >> more as they warm up or otherwise change temperature). > >>> > >>> It's a matter of sitting with the online order site open in one window, > >> and the Vectron or whoever website open to their catalog in another and > >> going back and forth comparing part #s.. > >>> > >>> > >>> _______________________________________________ > >>> time-nuts mailing list -- time-nuts@febo.com > >>> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>> and follow the instructions there. > >> > >> _______________________________________________ > >> time-nuts mailing list -- time-nuts@febo.com > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

Hi I'm sure the "usual" web sites would be quite happy to host the files. Bob On Mar 31, 2013, at 3:16 PM, paul swed <paulswedb@gmail.com> wrote: > Documents written and will convert to adobe later today. However the doc is > 300KB in size and does not even contain pictures and strip charts so the > time-nuts mailbox won't accept that. Several of you in the past have been > kind enough to offer to host the file. If you can directly email me please > I will send the file to you directly. > Regards > Paul > WB8TSL > > > On Sat, Mar 30, 2013 at 6:09 PM, Bob Camp <lists@rtty.us> wrote: > >> Hi >> >> The "easy" way to get to pdf is normal a pdf translator loaded as if it's >> a printer. Anything that will print can (at least in theory) be translated >> to a pdf by this approach. In real life, nothing is ever perfect, but I've >> had good luck with them. >> >> Bob >> >> On Mar 30, 2013, at 5:41 PM, paul swed <paulswedb@gmail.com> wrote: >> >>> The reciever is now drawn up in expressPC. Will add in the dividers to >>> another drawing I simply could not get it all in the same schematic. Not >>> that there is a lot expressPC has sizing limitations. I know there is >>> better... Just no time to tinker. >>> Its going to be interesting getting the schematics into a word or pdf >> doc. >>> Will repond to other comments. But for Atilla the issue with simple stuff >>> like doubler dividers is simply noise and competition from MSF. >>> Regards >>> Paul >>> >>> >>> On Sat, Mar 30, 2013 at 11:12 AM, Bob Camp <lists@rtty.us> wrote: >>> >>>> Hi >>>> >>>> I think it's pretty safe to say that the Vectron part mentioned is a >> VCXO >>>> with a crystal as the resonator. Indeed a ceramic resonator or an L/C >>>> resonator part would have a bit more drift and lower Q than a crystal >> based >>>> part. I would not try something like this with anything other than a >>>> crystal based part. At least as far as the commonly available stuff >> goes. >>>> I'm sure you could make it work with a hydrogen maser as the frequency >>>> source and a bit of DDS magic... >>>> >>>> Bob >>>> >>>> On Mar 30, 2013, at 10:23 AM, Jim Lux <jimlux@earthlink.net> wrote: >>>> >>>>> On 3/29/13 9:01 AM, Bob Camp wrote: >>>>>> Hi >>>>>> >>>>>> Too much tuning range is easy enough to fix. Use a pot to set it on >>>> frequency and then hook it to the rest of the "stuff" with a fixed >>>> resistor. The gotcha would be if the poor thing drifts so much that it >>>> *needs* the wide range to stay in lock. >>>>>> >>>>>> My guess is that you could buy a hundred VCXO's at auction for less >>>> than the cost of trying a dozen samples. >>>>>> >>>>> >>>>> wide tuning range VCOs have lower Q resonators, so the "outside the >> loop >>>> BW" noise will tend to be worse. >>>>> >>>>> The other problem I have found is that wide tuning range VCOs tend to >>>> drift more (that is, with a constant input voltage, their frequency >> changes >>>> more as they warm up or otherwise change temperature). >>>>> >>>>> It's a matter of sitting with the online order site open in one window, >>>> and the Vectron or whoever website open to their catalog in another and >>>> going back and forth comparing part #s.. >>>>> >>>>> >>>>> _______________________________________________ >>>>> time-nuts mailing list -- time-nuts@febo.com >>>>> To unsubscribe, go to >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>>> and follow the instructions there. >>>> >>>> _______________________________________________ >>>> time-nuts mailing list -- time-nuts@febo.com >>>> To unsubscribe, go to >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>> and follow the instructions there. >>>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.