Hi, I am playing with an Austron 1250B and I'd like to add a fine frequency adjust. The data sheet I have on the 1150 oscillator inside indicates that the EFC input is an option. Anyone have a schematic for the 1250B that shows how the 1150 is wired in. If no EFC on this unit I'll be getting rid of it. Thanks, Corby Dawson ____________________________________________________________ Click to make millions by owning your own franchise. http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3m6iSRbslUuv6eYSqQX4VKjWuK9N7IRHgjWc9Dfez5DWUmBr/

Hi Corby, my 1250a has an EFC connection on the rear panel (a bnc connector) I have some circuitry but not sure at present what "suffix" letter it refers to My 1250as have a 5MHz OCXO. Alan G3NYK ----- Original Message ----- From: "corby d dawson" <cdelect@juno.com> To: <time-nuts@febo.com> Sent: Saturday, August 30, 2008 10:50 PM Subject: Re: [time-nuts] Austron 1250B > > Hi, > > I am playing with an Austron 1250B and I'd like to add a fine frequency > adjust. > > The data sheet I have on the 1150 oscillator inside indicates that the > EFC input is an option. > > Anyone have a schematic for the 1250B that shows how the 1150 is wired > in. > > If no EFC on this unit I'll be getting rid of it. > > Thanks, > > Corby Dawson > ____________________________________________________________ > Click to make millions by owning your own franchise. > http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3m6iSRbslUuv6eYSqQX4VKjWuK 9N7IRHgjWc9Dfez5DWUmBr/ > > _______________________________________________ > 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 Corby and Nigel. I think I have a data sheet for the 1150 oscillator somewhere as well. I have an "orphan" 1MHz unit. The "a" definitely has the EFC on the rear and I recollect seeing a spec for the swing per volt. I seen to think it is quite fine and would be useful for GPS steering. Alan G3NYK ----- Original Message ----- From: "corby d dawson" <cdelect@juno.com> To: <time-nuts@febo.com> Sent: Saturday, August 30, 2008 10:50 PM Subject: Re: [time-nuts] Austron 1250B > > Hi, > > I am playing with an Austron 1250B and I'd like to add a fine frequency > adjust. > > The data sheet I have on the 1150 oscillator inside indicates that the > EFC input is an option. > > Anyone have a schematic for the 1250B that shows how the 1150 is wired > in. > > If no EFC on this unit I'll be getting rid of it. > > Thanks, > > Corby Dawson > ____________________________________________________________ > Click to make millions by owning your own franchise. > http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3m6iSRbslUuv6eYSqQX4VKjWuK 9N7IRHgjWc9Dfez5DWUmBr/ > > _______________________________________________ > 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.

corby d dawson wrote: > Hi, > > I am playing with an Austron 1250B and I'd like to add a fine frequency > adjust. > > The data sheet I have on the 1150 oscillator inside indicates that the > EFC input is an option. > > Anyone have a schematic for the 1250B that shows how the 1150 is wired > in. > > If no EFC on this unit I'll be getting rid of it. > > Thanks, > > Corby Dawson My 1250A manual shows the EFC being brought out to the rear panel, The front panel EFC is "over powered" by the voltage put on the rear panel connection. My manual has two interconnection diagrams for the wiring. They both show the BNC connector on the rear. The external EFC is spec.d at + or - 5 Volts Good luck on the B model Bill K7NOM