[time-nuts] Ublox neo-7M GPS

[David J Taylor]

Good day all,

On another list to which I subscribe, there has been chatter about the Ublox 
neo-7M GPS receiver. It seems that the device's configurable timepulse 
output is configurable from 0.25hz to 10 MHz as well as it's duty cycle and 
can also be set to be one condition when the GPS is not locked and a 
different condition when locked (i.e. 1 PPS if not locked, 10KHz when 
locked).

This seems all too good to be true. Sounds like a very simple self-contained 
GPSDO.

I don't know anything more about the device. I have just downloaded the 
documents and will be spending some time reading them.

I am curious if any other list members were aware of this feature of this 
device and have had any first hand experiences with it.

There is another model, the 7N. the 7M uses a simple crystal clock, the 7N a 
TXCO.

Cheers, Graham ve3gtc
========================================

Graham,

Take a look at the data sheet.  The waveforms at frequencies other than 8 
MHz (IIRC in other modules) and sub-multiples may not be all you desire. 
However, I would be delighted to see testing of this box by a qualified 
frequency-nut!

  http://www.u-blox.com/en/download/documents-a-resources/u-blox-7-gps-modules-resources.html
  http://www.u-blox.com/images/downloads/Product_Docs/NEO-7_DataSheet_%28GPS.G7-HW-11004%29.pdf
  http://www.u-blox.com/images/downloads/Product_Docs/u-blox7-V14_ReceiverDescriptionProtocolSpec_Public_%28GPS.G7-SW-12001%29.pdf

73,
David GM8ARV
-- 
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor at blueyonder.co.uk