Reviews are almost universally 5-star and, at only $12 and a good refund policy, why not give it a try.
BktTimeSync is a small (and free) 3.7MB program that synchronizes a PC's clock with time signals received by the GPS dongle.
The GPS dongle arrived today. Nothing in the way of documentation was included but I was still able to have it working and maintaining my PC's time within 10 minutes of opening the package, thanks to this video from Troy KF7SEY.
If you're interested in this device for accurate time while portable, here is the sequence of setting up:
- Download and install BktTimeSync but don't run it yet
- Plug in the GPS dongle. Wait while Windows installs the driver and assigns a COM port
- Initially, a red LED will be illuminated on the dongle. After about two minutes (initially, then 20 seconds) the red LED will blink green once per second, indicating reception of satellites
- Open BkTimeSync and configure it as shown below, replacing "COM5" with whatever port was assigned
I had no problem getting a lock on GPS satellites indoors. Simple, cheap and it works great.