Fischer.pa@XEROX.ARPA (08/22/85)
What would be a good way to network portable personal computers? ...so that you could get access to your computer mail or online databases while hacking on a bluff overlooking the beach... Tum dee dum... (ron)
kdale@MINET-VHN-EM.ARPA (08/22/85)
>What would be a good way to network portable personal computers? ...so >that you could get access to your computer mail or online databases >while hacking on a bluff overlooking the beach... How about with a modem (of course), and a mobile phone - not a cordless, but a true mobile phone like you see in cars or briefcases. I wonder whether the signal quality would support computer communications? Anyone done it yet or care to hazard a guess? Keith M. Dale (kdale@minet-vhn-em.arpa) BBN Comm Corp Stuttgart, W. Germany
Fischer.pa@XEROX.ARPA (08/23/85)
Are there legal limitations to the use of packet radio for transmitting commercial data? Can an organization have their salepeople using personal machines in the field transmitting data data on the "public airwaves". (ron)
rsellens@watdcsu.UUCP (Rick Sellens - Mech. Eng.) (08/26/85)
In article <876@brl-tgr.ARPA> Fischer.pa@XEROX.ARPA writes: >What would be a good way to network portable personal computers? ...so >that you could get access to your computer mail or online databases >while hacking on a bluff overlooking the beach... > >Tum dee dum... >(ron) If you want to take it that far.......How about a modem somehow attached to the portable part of a cordless phone, or maybe one of these "cellular telephone systems" that they are advertising these days. Does anyone know whether the signal quality would be high enough for reasonable transfer rates with a reasonable error rate? Rick Sellens UUCP: watmath!watdcsu!rsellens CSNET: rsellens%watdcsu@waterloo.csnet ARPA: rsellens%watdcsu%waterloo.csnet@csnet-relay.arpa
kds@intelca.UUCP (Ken Shoemaker) (08/29/85)
> If you want to take it that far.......How about a modem somehow attached > to the portable part of a cordless phone, or maybe one of these "cellular > telephone systems" that they are advertising these days. Does anyone know > whether the signal quality would be high enough for reasonable transfer > rates with a reasonable error rate? > > > Rick Sellens This is purely speculation, but I would think that what with moving around with a cellular phone, getting passed from one (fixed) antenna to another, that the phase distortion would be pretty tremendous... -- ...and I'm sure it wouldn't interest anybody outside of a small circle of friends... Ken Shoemaker, Microprocessor Design for a large, Silicon Valley firm {pur-ee,hplabs,amd,scgvaxd,dual,qantel}!intelca!kds ---the above views are personal. They may not represent those of the employer of its submitter.
john@anasazi.UUCP (John Moore) (08/30/85)
In article <1633@watdcsu.UUCP> rsellens@watdcsu.UUCP (Rick Sellens - Mech. Eng.) writes: >If you want to take it that far.......How about a modem somehow attached >to the portable part of a cordless phone, or maybe one of these "cellular >telephone systems" that they are advertising these days. Does anyone know >whether the signal quality would be high enough for reasonable transfer >rates with a reasonable error rate? > A cordless phone only gets you to the beach if you live there - the range is very low. Cellular would in fact work, and you can buy modems for it, but after shelling out a thousand or more bucks for the radio, and whatever for the modem, you then get to pay (here in Phoenix on our beautiful beaches) $25.00 per month plus 60 cents PER MINUTE! -- John Moore (NJ7E) {decvax|ihnp4|hao}!noao!terak!anasazi!john (602) 952-8205 (day or evening)
san@cositex.UUCP (Steve Sanderson) (09/02/85)
> > ......How about a modem somehow attached to the portable part of a > > cordless phone, or maybe one of these "cellular telephone systems"... > > Rick Sellens > > This is purely speculation, but I would think that what with moving > around with a cellular phone, getting passed from one (fixed) antenna > to another, that the phase distortion would be pretty tremendous... > Ken Shoemaker, Microprocessor Design for a large, Silicon Valley firm I was curious about the same thing not so long ago, and after doing some poking around (talking to some people familiar with cellular technology) the only obstacle to modem communications that they could come up with was the slight break in transmission when switching from one transciever to another (i.e. changing from one ``cell'' to another). This, of course, implies moving around, if the cellular phone was stationary, it would avoid this problem. Steve -- Steve Sanderson, COSI Texas 4412 Spicewood Springs, Suite 801 Austin, Texas 78759 UUCP: {ihnp4, seismo, ctvax}!ut-sally!cositex!san, san@cositex.UUCP AT&T: (512) 345-2780
olmp@olgba.UUCP (Mike Pellatt) (09/14/85)
> If you want to take it that far.......How about a modem somehow attached > to the portable part of a cordless phone, or maybe one of these "cellular > telephone systems" that they are advertising these days. Does anyone know > whether the signal quality would be high enough for reasonable transfer > rates with a reasonable error rate? > > > Rick Sellens I know for a fact that this is being implemented on the U.K. cellular radio systems by both Racal-Vodafone and Cellnet (the B.T. system). The rumours in the computing press said that each system was proposing different error-correction standards. Anyone know anything more about this ???? -- Mike Pellatt, Software Support, AT&T Computer Division, British Olivetti Ltd., Wellington House, 154-160 Upper Richmond Road, LONDON, SW15 2FN. Tel: (+44) 1 789 6699 Telefax: (+44) 1 874 3014 Telex:27258 Uucp : {ihnp4!cuuxb | mcvax!ukc!uel | olhqma }!olgb1!olmp
rsellens@watdcsu.UUCP (Rick Sellens - Mech. Eng.) (09/16/85)
>> If you want to take it that far.......How about a modem somehow attached >> to the portable part of a cordless phone, or maybe one of these "cellular >> telephone systems" that they are advertising these days. Does anyone know >> whether the signal quality would be high enough for reasonable transfer >> rates with a reasonable error rate? >> >> >> Rick Sellens > > I know for a fact that this is being implemented on the U.K. cellular >radio systems by both Racal-Vodafone and Cellnet (the B.T. system). The >rumours in the computing press said that each system was proposing >different error-correction standards. Anyone know anything more about >this ???? > >-- >Mike Pellatt, Software Support, AT&T Computer Division, British Olivetti Ltd., The September issue of Info Age magazine has a short article about a modem system available for use with cellular phones. I don't remember the manufacturer, but it looks like there is a real product, or products out there. Rick Sellens UUCP: watmath!watdcsu!rsellens CSNET: rsellens%watdcsu@waterloo.csnet ARPA: rsellens%watdcsu%waterloo.csnet@csnet-relay.arpa