Hello,  While not really monolithic, I have found L1/L2 receivers (mostly for navigation, but also in timing flavor) rather well integrated, especially from Novatel and Javad. Sadly, their websites don't mention prices.  Regards,  Jean-Louis Oneto Envoyé depuis un mobile Samsung  -------- Message d'origine -------- De : Attila Kinali <attila@kinali.ch> Date :25/07/2014 00:31 (GMT+01:00) A : Discussion of precise time and frequency measurement <time-nuts@febo.com> Objet : Re: [time-nuts] GPS-III On Thu, 24 Jul 2014 10:30:07 -0700 Michael Perrett <mkperrett@gmail.com> wrote: > The government is in the process of fielding three new signals designed for > civilian use: L2C, L5, and L1C. The legacy civil signal, called L1 C/A or > C/A at L1, will continue broadcasting in the future, for a total of four > civil GPS signals. Users must upgrade their equipment to benefit from the > new signals. Side note: L1C and L5 will only be available with Block III satellites. (ie. not before 201x, and even then only one or two satellites) L2C is available with Block IIM and IIF (13 satellites) > These new signals (will) provide many advantages as seen by the civilian > user, one of the most obvious is the ability to make real time IONO > corrections on civilian receivers (currently restricted to P Code > receivers). L1/L2 receivers already exist for civilan use and have been for some time. The P(Y) code does not need to be decoded for tracking the signal. This is known as "codless tracking". Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's a matter of joy in life. -- Sophie Scholl _______________________________________________ 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.