Post by thread:Tx,, RX, TRANSCIEVER modules

part 0 1608 bytes content-type:multipart/mixed;____________________________________________________________________ More than just email--Get your FREE Netscape WebMail account today at http://home.netscape.com/netcenter/mail Received: from 204.68.24.34 by www0e via web-mailer(R2.6) on Wed Nov 4 02:21:32 GMT 1998 Date: 3 Nov 98 21:21:32 EST From: STEVE TOMES <spam_OUTstomesTakeThisOuTnetscape.net> To: .....piclistKILLspam@spam@mitvma.mit.edu Subject: [Tx,, RX, TRANSCIEVER modules] Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----NetAddressPart-00--=_DcVG0272Sil6f2591a9" ____________________________________________________________________ More than just email--Get your FREE Netscape WebMail account today at http://home.netscape.com/netcenter/mail Received: from 204.68.24.33 by www0d via web-mailer(R2.6) on Wed Nov 4 02:14:09 GMT 1998 Date: 3 Nov 98 21:14:09 EST From: STEVE TOMES <stomesKILLspamnetscape.net> To: .....picklistKILLspam.....mitvma.mit.edu Subject: Tx,, RX, TRANSCIEVER modules Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii I've been working with the Pics for about 1 1/2 years and am about to engage the use of the cheep new RF modules that are coming out...(DVP, LINX, RADIOMETRIX) I realize that the data rate/$ is low but antisipate the rate to go up and $ dowm.... Would appreciate any advice before I get in over my head!!!! Working with 16c74,73's...also can't wait for the new "flash"mpu's.... Thanks...STEVE TOMES ____________________________________________________________________ More than just email--Get your FREE Netscape WebMail account today at http://home.netscape.com/netcenter/mail

I've used the linx modules as well as the RFM units. The Linx modules are good and have 8 digitally selectable channels on both modules. This is interesting as you could conceivably build yourself a basic spread spectrum system. (Linx will put one out next year). Their bit slicing process is a bit of a pain though as you are required to train the receiver with a preamble. However, this is quite effective. They are also in the process of building transceivers in the same form factor as ONE of the modules and including spread spectrum. RFM also has reliable units. Their evaluation kit includes a tranceiver board with the RX and TX hybrid packs, an audio amp, and an antenna switch. They work quite well too, and the source code was made available to us on a non-disclosure basis. Both have their advantages. I like the RFM modules because they are quite discrete and reasonable $$. The Linx modules are larger, and have better range and speed characteristics, but are more $$. I figure a guy can design his own for cheap, but unless you are building thousands, the design costs can't be justified. Then there is the pain of the FCC and DOC testing. Booking an antenna test range to do radiated spurious responses, etc, etc, etc, etc. Craig -----Original Message----- From: STEVE TOMES <EraseMEstomesspam_OUTTakeThisOuTNETSCAPE.NET> To: PICLISTspam_OUTMITVMA.MIT.EDU <@spam@PICLISTKILLspamMITVMA.MIT.EDU> Date: Wednesday, November 11, 1998 8:22 PM Subject: Tx,, RX, TRANSCIEVER modules ____________________________________________________________________ More than just email--Get your FREE Netscape WebMail account today at http://home.netscape.com/netcenter/mail