Hi Yes, one of the “great unanswered questions” about the KS boxes is how to quickly and easily switch them from a nice clean (useless) 15 MHz output to a nice clean (useful) 10 MHz. The circuit appears to be all discrete analog. That suggests that a “jumper this, swap that” approach might work.
Bob > On Dec 1, 2014, at 10:11 AM, paul swed <[email protected]> wrote: > > To address the one question Ref1s have no 10 Mhz. Just 15 MHz. > I have reversed out the various paths but it seems so have others. Must > have missed that thread. I do see the 5 to 10 doubler is in the q200-q203 > region. I can't speak to the qualities of the signals and still have not > found the magical X+Y= 15 Mhz. > So what are folks doing that just have ref 1s? > Is this the discussion on buffering the 5 Mhz and doubling? > Regards > Paul > > On Mon, Dec 1, 2014 at 7:43 AM, Bob Camp <[email protected]> wrote: > >> Hi >> >> Given the level of phase noise on the Ref-0 10 MHz output, I would not >> *want* to use the same pin they get that off of …. >> >> Bob >> >>> On Dec 1, 2014, at 6:25 AM, Götz Romahn <[email protected]> wrote: >>> >>> @ Paul >>> yes pin 1 of U206 is the input of a schmitt-trigger ( xxACT14 ) where >> the rectangular 10 MHz output on the Ref-0 Modul is generated. >>> >>> @ David >>> 10 MHz is not available on the Ref-1 module, the one with antenna input >> (yea, but it is still at pin 1 of U206). >>> >>> Götz >>> >>> Am 01.12.2014 04:09, : >>>> OK so it was not as hard as I thought getting all of teh screws out. The >>>> harder part is getting the actual board to slip out of the back. >>>> After getting to the bottom I found a locked 10 Mhz signal on U206 pin 1 >>>> somewhat of a sine wave but compressed top and bottom at 5 V and pin 2 a >>>> squared up version. Pin 1 goes off to several transistors. Also I have >> not >>>> looked at the rest of u206. >>>> So good or bad a tracking 10 Mhz exists. Not so easy to get to frankly. >>>> Regards >>>> Paul >>>> WB8TSL >>>> _______________________________________________ >>>> 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.
