TimeMachines, PTP/NTP Network Time Server TM2000B

Works very well.Its easy to set up, and configure, and it acquires the satellites fairly rapidly* and generates a time signal shortly after connecting, providing a Stratum 1 data to my network. The three LED indicators on the front give you immediate status, as to LOCK status, Power, and Time generation.*The unit comes with a Patch antenna, and they say that works well on exterior windows, however our IT room is windowless and as such we are using the external antenna, and that works great. (I am a Radio guy myself, so I would recommend using an exterior antenna every time!)The time server has a ethernet connection to my Core switch, I put it on its own VLAN to isolate it from other network traffic - and it provides time to all devices on a medium size network.I would recommend the rack mounted clock display to accompany this as well as the 1U bracket, which makes for a neat, tidy NTP Master clock installationI will say that you will probably get a better price direct from the vendor, and if you're going to use an external antenna and Lighting arrestor, look to a HAM or professional Radio vendor for better prices. (I bought everything direct from the vendor, it was convenient!

A very cost effective solution for networks isolated from web access.

My shop was in the market for a dedicated internal time source for our enterprise IT infrastructure. There are a number of "big name" brands with a slew of added features in the market that easily cost $5-$10k!I guess due in part to supply chain issues none of them could deliver a unit within a 3-6 month or longer time frame. I stumbled across TimeMachines and recommended ordering a TM2000B which arrived ~4 days later.Installation was a snap. Now all of our infrastructure systems and (Linux, macOS and Windows) desktops/servers obtain reliable GPS PTP time.Called support once to ask a question and got connected to a knowledgeable and friendly human within minutes.Highly recommend this device and the company.Thank you.