Blast from the Past GPS
Around 1989 at the University of Maine we were using early Trimble units powered by car batteries. We had to go out around midnight to observe enough satellites. After college it wasn't until 1996 when we purchased a mapping grade Trimble ProXL.
Acquired 3 leica base/rover sr530 setups (total of 6) in 2000, and that was a game changer. Had a pair of Trimble 4000 SSE's (RTK) and a pair of Novatel (static) units in the 1990's. From about 1995 all jobs have been in SPCS.
Prompted by this thread, I did a little reminiscing about early equipment. I was surprised to see an advertisement for an Allen Osborne Associates Turbo Rogue SNR-8000 field receiver. Only $361 (USD).
I know nothing about the seller but in case anyone wants to see the ad, the site address for the ad is: https://www.bonanza.com/listings/Turbo-Rogue-SNR-8000-Gps-Survey-And-Navigation-Receiver-By-Allen-Osborne/520200141?goog_pla=1&gpid=341761184097&keyword=&goog_pla=1&pos=1o1&ad_type=pla&gclid=EAIaIQobChMImf3nkt3R5AIVCNlkCh3zfAtyEAkYASABEgKrmfD_BwE
Interesting that the seller touts its being a Geodetic-quality instrument suitable for geophysical studies. It tracks eight (8) satellites (GPS only).
I started with the Trimble 4000SST about 1991(?) even attended a three-day training class at Trimble in Sunnyvale learning Trimvec and Trimnet.
Macrometer V1000 in 1986. Then Wild WM101 (one week only), then all Trimbles starting at 4000S, then 4000SL, 4000SX, 4000SE, 4000SSE, 4000SSi, 4400, 4700, 4800, 5700, R7, R8, R10, and newest Alloy.
For photos of the Macrometer see the previous thread: https://rplstoday.com/community/surveying-geomatics/any-members-of-the-geezer-patrol-have-experience-with-one-of-these/
Closest I ever came to one of these was at NGS HQ.