David Taylor wrote:
On 04/04/2018 20:47, Maria Iano wrote:
Thanks William, I will go with GPS.
Maria
That's a good choice. These boxes are low-cost (but not yet multiple
GNSS systems - check with the vendor), and have good hold-over in the
event of GPS failure:
http://www.leobodnar.com/shop/index.php?main_page=product_info&products_id=272
In (parts of?) the US you can get a receiver which uses the US-centric
cell phone modulation system which requires clock synchronization
between towers and phones, I installed one of these in Tampa, FL.
It provided ~12 us afair.
Terje
--
- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"
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