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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 -- [email protected] > >>> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>> and follow the instructions there. > >> > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
