Re: [time-nuts] L1/L2 GPS Receiver

2014-01-18 Thread Magnus Danielson
On 18/01/14 04:09, Jim Lux wrote: On 1/17/14 11:35 AM, Magnus Danielson wrote: On 2014-01-16 20:29, Hal Murray wrote: anders.e.e.wal...@gmail.com said: The real benefit of dual-frequency is you can do post-processing with PPP. Javad has some modules but they start at 3 kUSD - if anyone knows

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-17 Thread Michael Perrett
Magnus, I believe that he is referencing the the new L2 C/A code, which is not protected. Reference http://www.gps.gov/systems/gps/modernization/civilsignals/ Michael / K7HIL On Thu, Jan 16, 2014 at 2:04 PM, Magnus Danielson mag...@rubidium.dyndns.org wrote: On 16/01/14 20:29, Hal Murray

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-17 Thread Jim Lux
On 1/17/14 8:43 AM, Michael Perrett wrote: Magnus, I believe that he is referencing the the new L2 C/A code, which is not protected. Reference http://www.gps.gov/systems/gps/modernization/civilsignals/ Is the L2c officially on yet? and how many S/V are radiating it? I know there was some

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-17 Thread Michael Perrett
According to *GPS World*; The U.S. Air Force is directing transmission of continuous CNAV message-populated L2C and L5 signals starting in April 2014. . This is almost always optimistic, I would guess availability within 2014 a very high probability. Michael / K7HIL Ref:

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-17 Thread Dennis Ferguson
On 17 Jan, 2014, at 11:43 , Michael Perrett mkperr...@gmail.com wrote: Magnus, I believe that he is referencing the the new L2 C/A code, which is not protected. Reference http://www.gps.gov/systems/gps/modernization/civilsignals/ It would be nice to have a receiver for that when they turn it

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-17 Thread Magnus Danielson
On 2014-01-16 20:29, Hal Murray wrote: anders.e.e.wal...@gmail.com said: The real benefit of dual-frequency is you can do post-processing with PPP. Javad has some modules but they start at 3 kUSD - if anyone knows of hobby level priced L1/L2 receivers that can produce rinex-files for PPP

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-17 Thread Magnus Danielson
Michael, On 17/01/14 17:43, Michael Perrett wrote: Magnus, I believe that he is referencing the the new L2 C/A code, which is not protected. Reference http://www.gps.gov/systems/gps/modernization/civilsignals/ Regardless of how much I love the new civilian signals, they are at best scars at

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-17 Thread Magnus Danielson
On 17/01/14 19:17, Dennis Ferguson wrote: On 17 Jan, 2014, at 11:43 , Michael Perrett mkperr...@gmail.com wrote: Magnus, I believe that he is referencing the the new L2 C/A code, which is not protected. Reference http://www.gps.gov/systems/gps/modernization/civilsignals/ It would be nice to

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-17 Thread Jim Lux
On 1/17/14 11:35 AM, Magnus Danielson wrote: On 2014-01-16 20:29, Hal Murray wrote: anders.e.e.wal...@gmail.com said: The real benefit of dual-frequency is you can do post-processing with PPP. Javad has some modules but they start at 3 kUSD - if anyone knows of hobby level priced L1/L2

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-16 Thread Anders Wallin
Looking at this graph: http://www.thinksrs.com/assets/instr/PRS10/PRS10diag2LG.gif If you have a good PRS10, it only needs adjusting on the many-hours timescale? How much better is a dual-frequency receiver going to be for this, compared to a single frequency receiver? The real benefit of

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-16 Thread Hal Murray
anders.e.e.wal...@gmail.com said: The real benefit of dual-frequency is you can do post-processing with PPP. Javad has some modules but they start at 3 kUSD - if anyone knows of hobby level priced L1/L2 receivers that can produce rinex-files for PPP processing that would be interesting! Has

Re: [time-nuts] L1/L2 GPS Receiver

2014-01-16 Thread Magnus Danielson
On 16/01/14 20:29, Hal Murray wrote: anders.e.e.wal...@gmail.com said: The real benefit of dual-frequency is you can do post-processing with PPP. Javad has some modules but they start at 3 kUSD - if anyone knows of hobby level priced L1/L2 receivers that can produce rinex-files for PPP