Media Converter circuit

Something that does that and no more does not appear to be common.

More common were the external transceivers for coax or UTP or both, that connected to the computer via the 15 pin AUI interface. Even the ones with both connectors wouldn't translate between them.

Probably the simplest way to do translation would be to find an old hub or switch that has both kinds of ports... I remember scrounging one, but probably trashed it again in a move.

The cheapest way would probably be to replace the network card in the coax pc... unless it's not a pc but perhaps an older workstation or xterminal or networked printer or something. If it has an AUI connection in addition to the BNC you might be able to find an external UTP transceiver to use with it.

I googled "balun ethernet" and got a few hits. Here is one:

Is this the sort of thing you were looking for?

Alan Nishioka snipped-for-privacy@nishioka.com

NETGEAR EN104 ,4 port 10base-t connects and one bnc ethernet. (got 2 of them,not selling!!) I dont think they sell them anymore. Found

Great claim :-) They pretend to perform full duplex over a single coax. So there was no need to replace all those coax cables in the first place :-)

They make baluns (Balanced/Unbalanced impedance matching transformers) for things like video over an UTP. Matches 75 ohm - type F coax to