Hi friends,
Here some test with Neo-M8N http://www.ik0vve.net/?p=1354
I've used it also to get a 10 kHz reference signal mixing it with received 20 kHz audio.
 
73's, Max IK0VVE
 



Hi all,

The cheap ublox GPS modules are used by many LF amateurs as a 1 PPS reference signal source. I see there are NEO-7M modules available at amazon, relatively cheap.

Is there any improvement of the Neo-7M over the Neo-6M? I had a look on the data sheets but can't find improvements on the stability or sensitivity, just the power consumption is lower for the 7M, about 60 mW less. That's 0.12 Ah per day when running on a '12 V' accu and a good DC/DC converter.
https://www.u-blox.com/sites/default/files/products/documents/NEO-6_DataSheet_%28GPS.G6-HW-09005%29.pdf
https://www.u-blox.com/sites/default/files/products/documents/NEO-7_DataSheet_%28UBX-13003830%29.pdf

73, Stefan

Am 24.06.2017 11:42, schrieb Domenico IZ7SLZ:

Tony suggested this one. He said that delivery time is 20 days.

http://www.ebay.it/itm/Ublox-NEO-7M-Flight-Controller-GPS-Module-Built-in-Data-Memory-/282291740343?hash=item41b9e61eb7&_uhb=1