NixiSat GPS Satellite Controlled Clock
Here is the Cylindrical NixiSat Clock. A total of ten were assembled.
The NixiSat cylindrical enclosure was designed and manufactured by Mike
It is electrically the same as the wood based NixiSat. The cylinder
is 6 inches in diameter. End caps are machined acrylic,
all attaching and support hardware are stainless steel. It is an amazing
item to look at. And very popular with celebrities.
NixiSat is always accurate to within 500ns (nano-seconds) of the GPS
Satellite transmission -Far superior to local oscillator and AC line referenced
to download the NixiSat Operation manual in .PDF file format.
NixiSat receives the satellite transmission using a compact "puck" style
1.5Ghz antenna. Indoor locations can provide adequate satellite reception
antenna is placed inside on a window sill. Some congested hi-rise environments
will require an external antenna mounting to achieve an adequate sky view.
The hi-gain active antenna includes magnetic base for easy mounting,
and is weatherproof. 10' of coaxial lead is included, and supports extensions
up to 50'.
NixiSat incorporates a unique method of operation in areas with "spotty"
reception due to limited antenna mounting through use of a secondary time
In the event of satellite signal loss after successful startup; NixiSat
will continue operation using the high precision 1pps signal pulse from
the GPS receiver.
The lower right colon lamp will extinguish to indicate the clock is
operating from the local precision, then relight when the satellite signal
has been restored.
If power is lost, a lithium battery will maintain GPS receiver ephemeris,
and quickly resume operation when power is restored. No typical
cold start TTFF
(Time To First Fix) delay is incurred when NixiSat is re powered.
The initial startup acquire after installation may take 10-20 minutes,
Professionally engineered and skillfully handcrafted. Only the
finest components were used in the construction.
Though the term "rare" has been exhausted by others, NixiSat was typically
offered on a special order basis only.
The clock is powered by a compact 12vdc wall adapter. The clock is fully
isolated from the line voltage.
Connections to 12vdc power and the GPS antenna are made at the side
of the clock.
The Oncore GT+ GPS receiver is visible at the lower right, mounted
on standoff posts.
Here to return to the Nixie Clock and Nixie Wristwatch site