This must have been around the same time (1993 or so) when many organisations were upgrading old coax 10Base2 network equipment to modern 10BaseT (and eventually 100BaseT). My friends and I, strongly motivated by the incentive of being able to play multiplayer DOOM, managed to source some free ISA 10Base2 Ethernet cards and coax cable and T-connectors from someone's Dad. The only thing we were missing was the terminators which could be made yourself by cutting a coax cable and soldering a resistor between the conductors... fun introduction to LAN technology for us!