Re: [time-nuts] Iridium source?

On 10/7/15 1:16 AM, Tom Van Baak wrote: Stu, Thanks for the heads up. If you can leak anything from the upcoming paper please let us know. Since you're an Iridium expert, would you be able to answer the question? The OP (John Todd) was asking about reception deep indoors, where GPS signals fa

Re: [time-nuts] Iridium source?

JT, You say GPS isn't available 'often'. Can you define 'often'? As in not at some locations, or as in GPS signal is only available now and then temporally? If the latter, any GPS timing unit with decent holdover should solve the issue. If the former, well, you've gotten some replies on that. Fa

Re: [time-nuts] Iridium source?

sting is here: https://www.febo.com/pipermail/time-nuts/2015-October/094146.html /tvb - Original Message - From: "Stewart Cobb" To: Sent: Tuesday, October 06, 2015 6:51 PM Subject: Re: [time-nuts] Iridium source? > The use of Iridium satellite signals for timing, locati

Re: [time-nuts] Iridium source?

The use of Iridium satellite signals for timing, location, and position-based authentication is being commercialized by a startup called Satelles. The technology is known as Satelles Timing and Location, or STL. Prototype STL timing systems are providing PPS with accu

Re: [time-nuts] Iridium source?

Hi John: It seems like the indoor improvement over GPS is based on the much stronger signal level of the Iridium signal. Note the two signals are both in the 1.6 Ghz area. Page 15 of this document says the BOM cost is under $20 for this service (no mention about the monthly subscription). The

[time-nuts] Iridium source?

I’m working on a project that needs a good clocking source deep inside of noisy environments (data centers and the like.) This can’t be network-based - it needs to be independent of the systems surrounding it, and GPS/GPS-like systems will often be unreachable. I’ve read up a bit on Iridium