amajidim@marketing.UUCP (Amir Majidimehr) (11/12/88)
I would like to experiment with sending digital data on ordinary AC lines.
I know there are commercial modems that do that but I would like to come up
with a cheap and low speed version (110 to 300 baud). Does anyone have
any information on books/articles on this topic?
Thanks a lot!
Amir H. Majidimehr
Gould Inc, Computer Systems Division
{sun,pur-ee,brl-bmd}!gould!amirciciora@tramp.Colorado.EDU (Ciciora; Steven joseph) (11/12/88)
In article <1440@marketing.UUCP> amajidim@marketing.UUCP (Amir Majidimehr) writes: >I would like to experiment with sending digital data on ordinary AC lines. >I know there are commercial modems that do that but I would like to come up >with a cheap and low speed version (110 to 300 baud). Does anyone have >any information on books/articles on this topic? > >Thanks a lot! > >Amir H. Majidimehr >Gould Inc, Computer Systems Division >{sun,pur-ee,brl-bmd}!gould!amir See the August 1983, vol 8 number 8 issue, page 36 of BYTE mag. Steve Ciarcia (my mentor) has an article called "Build a Power-Line Carrier- Current Modem./Now your computer can communicate over electrical power wiring." Any self-respecting library should have it, but if you absolutly can't find it anywhere else, get a hold of me and I'll send you my copy. Steven Ciciora (303) 786-3630
gmg@hcx.uucp (Greg M. Garner) (11/12/88)
I would also be interested in anything about transmitting digital data over power lines. Thanks! Greg Garner gmg@hcx.uucp USENET: ...!uunet!harris.cis.ksu.edu!hcx!gmg 501-442-4847
ciciora@tramp.Colorado.EDU (Ciciora; Steven joseph) (11/13/88)
Wait, let me look under my bed... ah, here it is, all covered w/ dust. Try looking in the August 1983, vol 8 #8 issue of BYTE, p.36. "Build a Power-Line Carrier-Current Modem/ Now your computer can communicate over electrical power wiring." by Steve Ciarcia. A good library should have it, If not, I could send you a copy of the article. I thought I replied over the net, but come to think of it, I don't remember seeing my origional posting. If for some reason my posting didn't work, could you return the favor and foward this info to the origional poster? Thanks, Steve Ciciora U of Colorado, boulder 226 brackett hall boulder, colorado 80310 (303) 786-3630 -- oops, damn mailer bounced, so here it is re-posted on the net. sorry.
markz@ssc.UUCP (Mark Zenier) (11/14/88)
In article <1153@cseg.uucp>, gmg@hcx.uucp (Greg M. Garner) writes: > > I would also be interested in anything about transmitting digital data over > power lines. Thanks! See "Radio Electronics", July and August 1988 for a writeup of a kit using full duplex fsk at 100/150 khz. Mark Zenier uunet!pilchuck!ssc!markz "He did decide, though, that with more time and a great deal of mental effort, he could probably turn the activity into an acceptable perversion"-Mick Farren
wbrown@beva.bev.lbl.gov (Bill Brown) (11/15/88)
In article <1440@marketing.UUCP> amajidim@marketing.UUCP (Amir Majidimehr) writes: >I would like to experiment with sending digital data on ordinary AC lines. >I know there are commercial modems that do that but I would like to come up >with a cheap and low speed version (110 to 300 baud). Does anyone have >any information on books/articles on this topic? > >Thanks a lot! > >Amir H. Majidimehr >Gould Inc, Computer Systems Division >{sun,pur-ee,brl-bmd}!gould!amir National Semiconductor makes a couple of chips just for this sort of thing. They are the LM1893/LM2893 Carrier-Current Transceiver chips. The application notes that deal with them - sorry I don't have the numbers handy - cover the issues quite well. -bill WLBrown@lbl.gov
piety@hplabsb.HP.COM (Bob Piety) (11/16/88)
The HP Journal, May '87, has an article on the above subject. The article discusses line characteristics and common problems that may be encountered. Bob