I had inquired with Frontier about installing a GPS antenna and they said they don't allow antennas of any kind attached to the building anymore. I didn't pursue that any further. I didn't think to check what the signal strength was inside.
----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com ----- Original Message ----- From: "Andreas Ott" <andr...@naund.org> To: nanog@nanog.org Sent: Wednesday, May 1, 2019 3:50:33 PM Subject: Re: NTP question Hi, On Wed, May 01, 2019 at 02:01:44PM -0600, Brielle Bruns wrote: > If you can't get a good spot for an antenna, you could be on the lookout > for a CDMA NTP clock. CDMA service is about to be retired in several places, please check in your area before you install a "new" CDMA based time server. C.f. https://www.verizonwireless.com/support/knowledge-base-218813/ I looked into the same thing and decided not to go with CDMA. A simple check inside a (datacenter) building is to use one of the GPS smart phone apps that display you number of Sats and signal strength then walk around where you would place the NTP server appliance. Beware of server CPUs and memory making RF noise in the same frequency spectrum of 1.2 - 2 GHz, completely blanking out any GPS indoors. I concur that installing an amplified roof-top antenna and running coax to your receiver is the best option. -andreas -- Andreas Ott K6OTT +1.408.431.8727 andr...@naund.org
