http://www.alphalink.com.au/~derekw/upntcvr.htm Realtime Control's UPN Laser Transceiver http://home.vicnet.net.au/~upnet/ a laser based network more at: http://204.210.50.240/fiberoptics.htm Also, please use [OT] rather than Off Topic so that people who are short on time can use an automated system to filter their PICList email. --- James Newton mailto:jamesnewton@geocities.com 1-619-652-0593 http://techref.homepage.com The Technical Details Site. Members can add private/public comments/pages ($0 TANSTAAFL web hosting) -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Randy Glenn Sent: Thursday, February 03, 2000 21:00 To: PICLIST@MITVMA.MIT.EDU Subject: Re: Off Topic Ethernet Question. Could you please tell me where to get a copy of this RS232 "laser" transceiver schematic? It sounds very interesting - I might be able to use it to finally defeat Austin Powers. -Randy Glenn E-Mail: PICxpert@yahoo.com Web: http://i.am/PICxpert Currently wondering why I can't get in to Safe Mode - where's a Mac when you need it? -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Andrew Hooper Sent: Thursday, February 03, 2000 10:37 PM To: PICLIST@MITVMA.MIT.EDU Subject: [PICLIST] Off Topic Ethernet Question. Sorry for the off topic question, but someone here may know the answer to this one. What is the output on a standard Ethernet card?, the RJ45 has 4 used pins I know they are rx1 rx2, tx1 tx2, but would it be possible and I know they are 120ohms. The question is, whats stopping us from using a small rx/tx RF module and using two Ethernet cards as a wireless interface, Yes I know that your not going to get 10mb but for some stuff like terminal communications process control and other stuff its not going to matter. The idea came to me when I discovered a schematic for an inexpensive laser RS232 transceiver. In the environment IM trying to setup this control system in we are not able to use Ethernet cables or wired networks due to the machinery.. Its an EDM machine, and the RF in the room is WAY to high, the PC is in a Faraday cage because we originally had trouble with it locking up :(. Regards Andrew Hooper __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com