I am a "Picker" on the weekends. Found this in one of those auction warehouses for roughly $15.
Not working but I do not intend to use it, just for display purposes. One of the earlier GPS from Sony.
I'd never heard of the Pyxis before. According to an announcement in Wired Magazine from 1993, it can track 4 SVs and sold for almost $1200.
A working unit recently sold on eBay for $20 shipped.
My dad had one of those for his boat.
Cost about $2000 (I think) in 1991.
Correction: Dad beat the guy down from $3000 to $2500 when he got it.
Being a GNSS Manufacturer Rep and Tech Support guy, I've had the opportunity to collect several older, original GPS receiver models over the past 25-years. My GPS collection keeps growing, a history of the progression of GPS hardware. They keep getting smaller and less expensive. GPS been bery-bery good to me...
-BbB B-)
Do you have one of the Texas Instruments units? "Macrometer" I believe was the name.
Macrometer was not made by T.I. but by AeroServices/Western Geophysical. If you have one of the original Macrometers you must have a lot of storage space. The two components pretty much filled up the entire cargo area of a Suburban, and it's antenna was the size of a kitchen tabletop. Later on, the Mini-Macrometer or "MiniMac" was developed to replace it and was a marvel of miniaturization, being only the size of a small suitcase and weighing in at a dainty 44 pounds. The clumsy and painful carrying handle of the MiniMac caused it to be a basically theft-proof instrument. The antenna had also been reduced in size to about 3' square-- but it still had plenty of sail area if you were carrying it across an oil rig's helo deck in a fair breeze.
For a picture see page 30 of the following PDF http://geodesyattamucc.pbworks.com/w/file/fetch/63292731/lecture4_2013_historyMethods.pdf
Don't forget the marine cell batteries...
Texas Instruments made the TI 4100. That's the receiver used by GSI in the late 80s and early 90s. Our company had contracted them to do GPS control for mapping and I did a ride along on some jobs. I remember logging the data onto a small laptop with 3.5 inch floppys. Sessions were hours long and since the disks only held 720k we had to change them during the sessions which was very nerve wracking. I believe it was a 5 channel receiver like the early Trimbles. That's all you could use since the constellation only gave you 5 in view at best. My how times have changed.