I went about obtaining a solution in a round about way in building a GOES satellite simulator that drives a truetime DC468 rcvr. It has IRIG B outputs. I do like the displays on the truetime rcvrs. Just pulled the unit out as I believe the gps rcvr may have an issue as noted on other threads. If true, time (Pun intended) to convert to a $21 ublox. Paul WB8TSL
On Wed, Jun 25, 2014 at 5:17 AM, Morris Odell <[email protected]> wrote: > I did this successfully a few years ago using an AVR 90S8535 to generate > IRIG B so that I could use a vintage nixie IRIG display with a Trimble > Lassen IQ GPS receiver that spoke NMEA IIRC. > > I used one of the counters in the AVR to generate the 1 KHz carrier, read > the serial output of the receiver with the USART in the AVR, translated it > and generated a binary IRIG code to modulate the carrier by switching the > bottom of a resistive divider up and down. > > It wasn't too hard as I recall, and I was much less experienced in AVR > programming in those days. > > Morris > >> >> > Date: Mon, 23 Jun 2014 12:26:40 -0400 >> From: Bob Bownes <[email protected]> >> To: Discussion of precise time and frequency measurement >> <[email protected]> >> Subject: [time-nuts] microcontroller based IRIG generator >> Message-ID: >> <CACsYtUsmAdz_08+Z8sHEh=koPuCkko263ijh3HkA89yz=b0+Nw@ >> mail.gmail.com> >> Content-Type: text/plain; charset=UTF-8 >> >> I remember a few discussions over the last few years about building a >> microcontroller (PIC, Arduino, MPS430, whatever floats your boat) based >> IRIG generator. Did anyone ever get one working? >> >> >> Thanks! >> Bob >> >> _______________________________________________ > 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.
