Hi,
On 11/13/2017 02:23 PM, jimlux wrote:
On 11/12/17 10:22 PM, Magnus Danielson wrote:
Hi Don,
Hardly. As long as you do GPS L1 C/A code only, chanses you get any
useful improvement isn't all that great. SBAS may help you some thought.
the new L1C code plus increase in radiated power
Hi
There are papers from ION and other places detailing testing on the
new(er) clocks. They do have quite good ADEV performance. If they
start showing up on eBay, expect a bidding war ….
The most useful thing for an L1 user is getting the added bits into the
datastream for the epoch. That
On 11/12/17 10:22 PM, Magnus Danielson wrote:
Hi Don,
Hardly. As long as you do GPS L1 C/A code only, chanses you get any
useful improvement isn't all that great. SBAS may help you some thought.
the new L1C code plus increase in radiated power might help
Hi Don,
Hardly. As long as you do GPS L1 C/A code only, chanses you get any
useful improvement isn't all that great. SBAS may help you some thought.
Cheers,
Magnus
On 11/13/2017 05:35 AM, Don wrote:
I read where the first GPS III satellite had finally been approved for
flight.
The report
I read where the first GPS III satellite had finally been approved for
flight.
The report said they will provide three times better location accuracy
than current GPS.
Will "better" onboard clocks help contribute to this improvement? How
are they "better"?
Can we expect enhanced timing
Hi
The antenna is a pretty standard ceramic patch. No better (or worse) than any
other patch. No idea how quiet the preamp is or even if there is one. The uBlox
receiver is very good for sensitivity.
Bob
On Jul 24, 2014, at 9:44 PM, Chris Albertson albertson.ch...@gmail.com wrote:
How good
I have purchased about a dozen of these receivers
(mostly the RS-232 version for $1 more). Reyax
ships very fast. I get them in about 1 week.
They work well, and are based upon the Ublox MAX-7C.
They output independent GPS and Glonass NMEA messages
and don't appear to merge the two
Hello All,
Does anyone know yet of any companies that are making GPS-III receiver
chip-sets/modules yet?
Some web-sites on GPS-III:
http://www.gps.gov/systems/gps/modernization/
http://www.gps.gov/systems/gps/modernization/civilsignals/
On Thu, 24 Jul 2014 00:14:10 -0700
John C. Westmoreland, P.E. j...@westmorelandengineering.com wrote:
Does anyone know yet of any companies that are making GPS-III receiver
chip-sets/modules yet?
Do you mean a L1 C/A / L2C receiver? I am not aware of any.
AFAIK all dual band receiver are
GPS-III is the wrong term. You mean block three spacecraft.
The Air Force is buying 8 new satellites they are calling block III
and they don't launch until at least 2016. If the current satellites
are in good health they could delay the launch. If the past is a
guide to the future the
Chris,
I disagree only with your statement as a GPS user you'd never know.
As stated in one of John's references:
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
I think you can buy multi-frequency receivers. Remember GPS is not longer
the only system. There are stelites from the US, Europe, Russia, China and
Japan.Adding more more frequencies allows the receiver to detect multi
path and makes it harder to jam but the timing is not greatly
On eBay the RNY25A1 receiver module sells for $15 and $1 for shipping
from Taiwan. Supposedly, it does GPS and Glonass. There is a link to a data
sheet there as well. Might be interesting to play with one and compare the
results. Stick it in a Tupperware box and nail it to a fence post.
On Thu, 24 Jul 2014 10:30:07 -0700
Michael Perrett mkperr...@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
Try http://navspark.mybigcommerce.com/. A bit more expensive ($25) but comes
with a processor embedded. There is also a GPS+Beidou flavor.
Edésio
(sorry if duplicated)
On Thu, Jul 24, 2014 at 05:10:35PM -0500, Al Wolfe wrote:
On eBay the RNY25A1 receiver module sells for $15 and $1 for
Hi!
Try http://navspark.mybigcommerce.com/. A bit more expensive ($25) but comes
with a processor embedded. There is also a GPS+Beidou flavor.
Edésio
On Thu, Jul 24, 2014 at 05:10:35PM -0500, Al Wolfe wrote:
On eBay the RNY25A1 receiver module sells for $15 and $1 for
shipping from Taiwan.
I have purchased about a dozen of these receivers (mostly the RS-232 version
for $1 more). Reyax ships very fast. I get them in about 1 week.
They work well, and are based upon the Ublox MAX-7C. They output independent
GPS and Glonass NMEA messages and don't appear to merge the two systems
Hi
If you go looking for them on the auction sites, the RYN25DI from Reyax is the
search item for the RS-232 version. The RYN25AI is the search item for the not
RS-232 version.
Bob
On Jul 24, 2014, at 7:15 PM, Mark Sims hol...@hotmail.com wrote:
I have purchased about a dozen of these
How good is the built-in antenna? Do they work well in doors away from windows?
The $15 price, low power and 2.5 meter CEP are attractive. They are
1/2 the price of something else I was looking at. I'd be using them
for navigation, not timing.
On Thu, Jul 24, 2014 at 5:57 PM, Bob Camp
I received a little package with a GPS receiver + antenna from Gentleman
[H6m] and I would like to tel him thank you very much
73
KJ6UHN
Alex
On 7/24/2014 5:57 PM, Bob Camp wrote:
Hi
If you go looking for them on the auction sites, the RYN25DI from Reyax is the
search item for the RS-232
They seem to do pretty well. I have mine in devices sitting on my kitchen
floor. It is downstairs in a stucco over wire mesh house. Nearest window/door
is 20 feet away... and it is shaded by a stainless steel covered bridge to the
guest house. Also lots of stainless in the kitchen... they
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