Data band used to be channel 9 on the SCPD VHF Freqs. (Or ch. 4 on the really old radios)Anyone know what this means?
"10-55 Switch to data band"
...(OTA-K reports above that apparently that repeater is off line and the function shifted to Command Band, 155.685R, 146.2) and talkgroup 62448 on the County 800 MHz trunked system.
What is MDTW1234?
MDTW1234 is a software package which, with the right hardware, will allow someone to monitor Motorola's Mobile Data Terminals (MDTs) which use the MDC-4800 protocol.
http://www.geocities.com/SiliconValley/Lab/1067/MDT.HTMNone of the information broadcasted is encrypted, so in theory it is legal to monitor. However, I am not a lawyer, so you should study the laws regarding this matter before attempting anything.
June 16/98: I have received numerous requests for a 19.2k RD-LAP version of MDTW1234. Unfortunately, this protocol is not used in our area, making development work extremely difficult. One of the MDTW1234 users informed me that a Motorola tech said that RD-LAP is the same as MDC-4800, with the exception of baud rate. With this in mind, Bonzo has written MDTW192.EXE version 1.0 Beta. It is currently UNTESTED; if the MDT users in your area use 19.2k RD-LAP, try it out and let us know if it works via email. If everything checks out, 19.2k will become a command-line switch in MDTW1234.
June 23/98: The test results are in; it appears that 19.2k RD-LAP is NOT just a faster MDC-4800. One tester pointed out that MX-COM manufactures an RD-LAP-compatible modem chip called the MX-929B. For more info, download the data bulletin (viewing requires Adobe Acroreader, a free download). MX-COM also manufactures numerous other interesting modules.
I hear what you're saying..But not sure I understand.. Rephrase the question...anyone remember "a 45 and a 45a.negative stolen or unreported". they used to drive me BONKERS ! .
Someone has released a decoder for RD-LAP - seeThe SCPD mobile data system uses Motorola's RD-LAP at 19.2 kbps. It operates over conventional channels in the 482-488 band. While the radio signals for RD-LAP are generally not encrypted (DES, DES-XL, etc.) there are no known decoders for the RD-LAP protocol outside of a Motorola radio modem ...