yes please! Don > On Nov 26, 2014, at 11:45 AM, Jim Sanford <wb4...@wb4gcs.org> wrote: > > Didier: > Please DO share. Thanks! > Jim > > On 11/25/2014 7:47 PM, Didier Juges wrote: >> Jim, >> >> I have somewhere a piece of VB 6.0 code that decodes NMEA sentences and puts >> it pretty on the screen (at least that's how I remember it :). I am not at >> home at the moment but I'll be glad to send it to you if you are interested. >> May not do what you want, but it will get you started. >> >> Didier KO4BB >> www.ko4bb.com >> >> On November 25, 2014 1:42:42 PM CST, Jim Miller <j...@jtmiller.com> wrote: >>> I have one of the LTE-Lite 20Mhz units and plan to use it as a >>> frequency >>> reference for my ham radio gear. My planned setup is as follows: >>> >>> I'm putting it in the recommended Hammond enclosure powered by a USB >>> cable >> >from my PC. I had originally planned to use the wall wart provided but >>> I >>> want to get status from the unit without hacking a window in the top to >>> see >>> the LEDs so I plan to use TBD software to provide a status check. I >>> briefly >>> thought about doing something with an Arduino and display shields but >>> that >>> seemed like too much work for now. >>> >>> I'm using a inverting D FF from TI (SN74aup1g80) as a divide by 2 to >>> provide 10Mhz. The chip and associated passives will be on a little >>> circuit >>> board mounted in the open area normally reserved for the external >>> oscillator. The output of the chip will be connected via a series >>> resistor >>> of about 400 ohms to a SMA connector. This resistor will limit the load >>> on >>> the FF and the LTE-Lite power source. Power will be taken from C6. >>> >>> This output will only go a few inches to a DEMI 10Mhz 4 way splitter >>> The >>> input of the splitter will be equipped with an additional ERA-2+ >>> amplifier >>> (50 ohm input) which will restore the signal levels lost due to the >>> series >>> resistor in the LTE-Lite addon. The DEMI splitter will also be equipped >>> with a manual power switch which will allow me to kill the output of >>> the >>> box if the GPSDO fails for some reason. >>> >>> The little hockey puck antenna will be mounted directly outside the >>> shack >>> wall near a south facing wall which will limit the visibility to only >>> half >>> the horizon. I'm assuming this will be enough for my modest needs. >>> >>> The four outputs will be used as follows: >>> >>> One will go to the K3 ExtREF to provide an external reference. >>> >>> Two will go to separate TX/RX converters for low frequency (<600Khz) >>> use >>> and be used with the transverter I/O on the K3. >>> >>> The last will be used as a general calibration reference. >>> >>> When the power switch on the DEMI splitter is turned off the K3 will >>> revert >>> to using its internal TXCO. >>> >>> I leave the PC running 24/7 and the power to the LTE-Lite would only be >>> interrupted when the PC is rebooted. I don't need a frequency reference >>> during the reboot time since I always operate my rig with the PC on and >>> running. The TBD status software will tell me when the LTE-Lite is >>> synched >>> up again. The PC is served by a UPS and the shack circuit is one which >>> is >>> served by our whole house generator. >>> >>> I have the DEMI splitter built up and working. Now just waiting on >>> enclosure from Digikey. I should have everything running by mid >>> December. >>> >>> I still need to figure out what to use for the status software. Ideally >>> I'd >>> like an applet to display appropriate status indications on my monitor >>> for >>> now I'll examine the uBlox and Putty and if not satisfactory perhaps >>> I'll >>> write something in VB. >>> >>> Feedback and suggestions welcome. >>> >>> 73 >>> >>> Jim ab3cv >>> _______________________________________________ >>> 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. > > > --- > This email has been checked for viruses by Avast antivirus software. > http://www.avast.com > > _______________________________________________ > 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. >
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