Home |
Search |
Today's Posts |
#2
|
|||
|
|||
both winmdt and mdtmon were written for a type of MDT that has ( for the most part ) been abandoned commercially now. modern MDT runs at much higher baud rate and with totally different protocols than those programs were written for. much of it either encrypted or run on digital trunking repeaters. THAT is the major reason that you haven't seen anything posted about them ( in the USA ) in several years. there are always ( it seems ) a few people that chime in and " claim " their local metro area is still using the older / slower protocols , but for the vast majority of hobbyist ... MDT is LONG past monitoring. unless you are absolutely sure your local MDT is old / slow mdc-4800 , forget about it. ( both those programs only decode mdc-4800 and do not work with the newer RD-Lap 9600 - 19,200 baud signals ..all of which have newer and different encoding / decoding protocol. ) alternative possibilities include some of the rd-lap-9600 mobile units seen , occasionally , for sale on ebay .... and the rare MDT field testing terminal equipment also seen on ebay. in either case there are MANY different types of signals that people lump into the MDT realm , these days ... many of them no here near being the MDT that people generally think of. most of the above is long shots at best and not likely to be what you have in your area. modifying and using the above mentioned equipment requires " profound " knowledge and equipment to be successful. one of the best sites for current MDT interests is http://www.geocities.com/CapeCanaver...539/INDEX1.HTM middle , center of the page. experience says these programs aren't going to help you much ( esp if you live in USA / Canada ) but it's something to work with. remember that if you live in the USA , eavesdropping on MDT signals is breaking Federal laws . have phun ..... krackula .... BTW: MDT freqs are VERY dependent on local applications and equipment ..they can vary from 150 mhz police to 900 mhz digital repeaters. there are NO standardized freqs or encoding methodologies for " in-car " mobile data terminals . in my metro area , alone , they are located on 150 mhz, 460 mhz , 850 mhz and 900 mhz bands. ( CHiPs , and 3 different local PDs ... all on different freqs and using different protocols ) http://www.wpascanner.com/addons.htm http://www.decodesystems.com/projects.html#mdt http://www.trunkedradio.net/digital/download_old.htm http://hamradio.lakki.iki.fi/new/Software/Decoding/ http://www.members.accessus.net/~090/awh/freqs.html On 5 Nov 2003 07:44:40 -0800, (Ben Dover) wrote: Hello all, First posting on here, does anyone know where I can obtain a copy of the program WinMDT that used to be available here on the net a few years back, and how well it worked compared to something like MDTMON. Also, if anyone would happen to know of any sites that have info on MDT frequencies that could be monitored. LCblanton's website used to have the info up on it, but he apparently thinks he's a scannergod and too good to reply to emails regarding this subject. |