Re: [time-nuts] Adafruit (MT3339) problems today

2014-04-11 Thread David J Taylor
[] WAAS only works in North America. I don't know details elsewhere, but the PMTK313 message says it turns searching for SBAS satellites on and off. --Jim Harman == Thanks for the information on the messages, Jim. For your information, in Europe we have EGNOS,

Re: [time-nuts] Adafruit (MT3339) problems today

2014-04-11 Thread Chris Albertson
On Thu, Apr 10, 2014 at 2:48 PM, Bob Stewart b...@evoria.net wrote: The only particular anomaly I can see is that it uses satellites close to the horizon for position fixing.I'm getting a reported SNR of 39 at 5 degrees elevation and 37 at 3 degrees, though I notice the sat at 3 degrees

Re: [time-nuts] Adafruit (MT3339) problems today

2014-04-11 Thread Magnus Danielson
On 10/04/14 23:48, Bob Stewart wrote: My Adafruit has gone walkabout again. This is a different unit than the one I spoke about some months ago. It's been about 150 ft from my actual location, which has, of course, made a mess of my GPSDO. Well, at least it verified my unlock code. I did

Re: [time-nuts] Adafruit (MT3339) problems today

2014-04-11 Thread Bob Stewart
, I don't even have a reliable way to do it after a cold start.   And I don't like the +/- 52ns sawtooth. Bob From: Magnus Danielson mag...@rubidium.dyndns.org To: time-nuts@febo.com Sent: Friday, April 11, 2014 2:49 PM Subject: Re: [time-nuts] Adafruit

[time-nuts] Adafruit (MT3339) problems today

2014-04-10 Thread Bob Stewart
My Adafruit has gone walkabout again.  This is a different unit than the one I spoke about some months ago.  It's been about 150 ft from my actual location, which has, of course, made a mess of my GPSDO.  Well, at least it verified my unlock code.  I did a POR and it seemed to come home, but

Re: [time-nuts] Adafruit (MT3339) problems today

2014-04-10 Thread Bob Stewart
Stewart b...@evoria.net Sent: Thursday, April 10, 2014 5:25 PM Subject: Re: [time-nuts] Adafruit (MT3339) problems today Mine would do that when the antenna was indoors. It is much more stable since I put it outdoors on a windowsill. Do you have WAAS or equivalent available? Enabling that helped my

Re: [time-nuts] Adafruit (MT3339) problems today

2014-04-10 Thread Jim Harman
On Thu, Apr 10, 2014 at 6:46 PM, Bob Stewart b...@evoria.net wrote: Could you give me a bit more information on using WAAS? I used the Adafruit library to send it the message // Turn on WAAS GPS.sendCommand($PMTK301,2*2E); and after that the GGA message shows a fix type of 2 where it