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Motorola® MTR2000 Base Station and Repeater Information and Modifications |
| If you are looking for information on the MTR300 Fire Tower repeater please go to the MX handheld page (since it was built by repackaging a pair of MX handhelds into the sheet metal frame from a Spectra-Tac receiver). |
The main manual for the MTR2000 is the Installation and Operation Manual 6881096E20, priced in the $20 range.
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From an email to repeater-builder:
The MTR is a very nice unit, and the internal controller will do 90% of what most
any amateur system needs to do... the unit has a connector on the back that is designed
for Motos Mobile Radio Telephone Interconnect (MRTI) unit and all the interfacing
can be done through that. One quirk : the microprocessor that controls the repeater
internals will not pass its own power-on-self-test with the transmitter PL encoder
inhibit line (pin 24 of the the 25 pin MRTI connector) grounded (i.e. active). So if
your needs include switching the internal PL encoder on and off make sure that as
you program up your repeater controller you set up a timer to make sure that this
line is not asserted until after the self-test is finished. The simplest way is to
just inhimit all repeater operation for the number of seconds that the self test
takes, plus a couple extra.
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MTR2000 is a registered trademark of Motorola Inc., along with a bunch of other terms and no misuse, violation or infringement is intended.
This web page, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by Kevin Custer W3KKC and multiple originating authors. All Rights Reserved, including that of paper and web publication elsewhere.