The GPS FLW Nixie Clock

The GPS FLW is a collaborative effort by three talented nixie designers; Peter Hand, Juergen Grau, and Jeff Thomas.

The goal was to design a Four Letter Word display using the giant Burroughs B7971 Nixie Tubes.

Including GPS time precision in an attractive display instrument. Suitable for presentation anywhere. 

The GPS FLW stands over five inches tall, and is ten inches wide.

The GPS FLW displays selected words from a list of over 3,200 real words taken from a dictionary, and include proper names in four letter words displayed at random.  Abbreviations, acronyms (eg FDNY), and some common alternate spellings (eg SHOW and SHEW) along with a few foreign four letter words that are generally understood by English speakers such as FRAU. 

There are no random or rule-generated “words” from two character pairings.  If enabled, an extensive list of very naughty words may also be displayed in a varying frequency. Time of day may be enabled to appear in hr:min format at the top of each minute in 12hr or 24 hr mode. The GPS FLW utilizes GPS transmitted data from an optional remote GPS receiver to ensure the display always remains accurate to the minute.

A PIR (Passive Infra Red) detector feature was included in the design to activate the display in the presence of visitors. The PIR feature requires some user supplied components to complete installation of the optional PIR detector feature.

Click Here to download the GPS FLW document package as a zip file. 

Above is a brief YouTube movie of the GPS FLW in action. 

The complete GPS FLW kit including tubes, enclosure kit, pre-populated and tested PCB, GPS and Power Supply is priced at $1199.00 SALE: $999.00

The individual components may be purchased separately. Some hobby builders prefer to design their own enclosure, and already have four B7971 Nixie Tubes, with spare remote GPS receiver.

The GPS FLW circuit board (assembled)  $109

Haicom HI-204III 20ch serial GPS receiver $60

12vdc 1amp Wall Power Adapter (America 120v 60Hz) $20

Warranty:  The assembled GPS FLW includes a guarantee for a period

 of one year against defects in the B7971 tubes, materials and workmanship.


GPS FLW shipping in the USA and it's territories is by USPS Priority mail insured, and restricted delivery shipping for $40.00.

International shipping coming soon using USPS Express Mail insured.

Questions? Looking to Purchase? Please email  Thank you!