The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: "Robbie Banks"
Subject: Re: Radio Modules for AMR
Date: Thu, 19 Sep 2002 09:24:54 +0100
References: <3Z4i9.764$XE1.email@example.com> <firstname.lastname@example.org>
NNTP-Posting-Date: 19 Sep 2002 08:24:51 GMT
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
Another alternative is
They stock a range of radio modules and transceivers and I've always found
them very informative when I have any questions.
"Frank Raffaeli" wrote in message
> "Tony" wrote in message
> > Hello
> > I am putting together a system to read water meters that are scattered
> > among ~35 buildings. I am considering both direct transmission to a
> > location (shop) or designing each data collection device to act as a
> > repeater. The second option would allow the devices to be used elsewhere
> > places where the buildings were farther apart. And so I lean toward that
> > way. But naturally that is a lot more complex. And involves Transceivers
> > instead of transmitters.
> > Tony
> I agree with Bill Lewis's post that in general, other things being
> equal, there is a tradeoff between bandwidth and range. You may have
> difficulty finding reasonably priced products used in un-licensed
> bands that have the range and reliability you require. for a
> ready-made solution, check out:
> Their solution consists of a narrow band fsk receiver at the
> collection terminal with an input sensitivity close to -120 dBm and a
> ~750 milliwatt 476 MHz transmitter at the meter side. I believe this
> is a licensed band. That setup will give you at least the range you
> are looking for.
> Frank Raffaeli
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup