Or simply buy one of these and use it - I have several of these and they work just dandy... Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates |   | |   | |   |   |   |   |   | | Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz up...Adafruit Industries, Unique & fun DIY electronics and kits Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates [Version 3] ID: 746 - New! Version 3 comes ... | | | | View on www.adafruit.com | Preview by Yahoo | | | |   |  Steven Donegan KK6IVC General Class FCC License Silver State Car #86 www.sscc.us From: Stacy <kg7qin@arrl.net> To: Sam Nabkey <sam.nabkey@gmail.com>; Frederick Bray <fwbray@mminternet.com> Cc: App_rpt-users@ohnosec.org Sent: Thursday, October 8, 2015 3:36 PM Subject: Re: [App_rpt-users] Jackson Labs GPS Device and RTCM You could just make your own: http://www.extremetech.com/extreme/98063-how-to-build-your-own-gps-receiver -Stacy On 10/08/2015 01:34 PM, Sam Nabkey wrote: http://g.factoryoutletstore.com/cat/18980/Automotive-GPS-Accessories.html I've seen these work well.  Cheaper at other sources.   No 10mhz but does 1pps.  Ymmv.. Sam On Oct 8, 2015 10:35, "Frederick Bray" <fwbray@mminternet.com> wrote: I am thinking of acquiring a couple of the Jackson Labs M12M replacement receivers to use with my RTCM units.  It appears that they might greatly simplify the process obtaining a GPS derived 1 PPS signal, especially for temporary / portable repeaters that require voting receivers.  They are currently available for under $200 per unit, shipped. http://www.jackson-labs.com/assets/uploads/main/M12M_replacement_Specsheet.p... http://www.jackson-labs.com/assets/uploads/main/M12M_replacement_UserManual.... These were designed as a retrofit for a specific earlier GPS receiver but they appear to be potentially useful to supply at least the 1 PPS signal required by the RTCM.  They might also act as a frequency standard for simulcast, although they may not have the oscillator required to provide a stable frequency source in the event of loss of GPS signal. Does it appear that these units would work? Has anyone experimented with this or similar units with the RTCM? Thanks. KE6CD _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem. _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem. _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.