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Information On and Modifications For Motorola® Equipment

Note that the contents of this page, like most here at www.repeater-builder.com, are totally dependent on donations of information. In other words, the repeater-builder web site and this Motorola web page is what the contibutors make it. If you have a hint, or a useful trick, please consider writing it up and sending it in.

	MICOR Mobile and Station Information - www.micor.info This page has everything on the MICOR except the Spectra-Tac / Aux Receiver chassis which is further down this page, and the Link Receiver that was built for the MSF5000 and PURC stations (also further down this page in the MSF and PURC section).
	Figuring out what you have   by Mike Morris WA6ILQ Cracking the model / ID number... with explanations of power levels, frequency bands, and a suffix table... (a work in progress, contributions welcome)
	Deciphering the AAA-NNNN Numbering Scheme of Motorola part numbers   by Mike Morris WA6ILQ A web page compilation the number breakdown table... the data is from four different vintages of the Motorola Buyers Guide publication (a work in progress, contributions welcome).
	Deciphering the first two digits of Motorola part numbers   by Robert Meister WA1MIK A list of the parts categories from a 1976 publication (a work in progress, contributions welcome).
	How to order manuals or parts from Motorola®   by Mike Morris WA6ILQ
	Mitrek and Mitrek "Super Consolette" table-top base station pages
	MSR2000 Station Pages
	Syntor, Syntor X, Syntor X9000, MCX, MCX100 and Mostar Pages
	MaxTrac, Radius and GM300 series Information and Modifications There are Maxtrac, Maxtrac 50, Maxtrac 300, Radius, M10, M100 M120, M130, M208, M214, M216 and GM300 radios. While they look very similar, they are actually quite different internally. Then there are the DeskTrac stations, the DeskTrac repeaters, the GR300, GR400 and GR500 repeaters... This page presents an overview.
	Spectra Radios Motorola has discontinued manufacture and depot service on this radio, and many police, fire and other agencies are replacing them. While Mike Blenderman K7IC has the definitive resource web site on the Spectra radios, we have a few goodies here.
	SpectraTAC and Auxiliary Receiver Information Page Note - this is the receiver section, not the SpectraTAC Voter section. That is covered below.
	Spectra-TAC Receiver Voting System Notes A collection of hints and tips for modifying the Spectra-TAC Voting panel.   Compiled by Kevin Custer W3KKC Note - this is the voter section, not the SpectraTAC Receiver / Auxiliary Receiver section. That is covered above.
	Saber Handheld Radios Motorola has discontinued manufacture and depot service on this radio, and many police, fire and other agencies are replacing them. Here's an overview.
	GTX 900 MHz Radios Information about the Motorola 900 MHz GTX mobile and handheld ‑ probably the fastest and easiest way to get on 900 MHz.
	The MSF and PURC Stations At the moment most of the information on this index page is UHF, but that totally depends on the information donations that we get... Repeater-builder would welcome additional articles on high-band and 900 MHz units.
	The MX Series of radios The "MX Series" includes several crystal based (actually channel element based) and synthesized products that were first introduced in 1975. These radios including the MX320, MX330, MX340, MX350 and MX360 handhelds, the PX-300 and 500 packsets, the MTR-300 firetower repeater, the "APCOR" emergency medical repeater, and several others.
	An Overview of the Motorola MaraTrac mobile radio   by Robert Meister WA1MIK and Jim Kalkowski N1GTL The MaraTrac is like a MaxTrac on steroids. Up to 99 channels, 100-110 watts, remote-mount. This article shows what's inside a UHF unit and a low band unit. The Radius M400 is similar. There are some MaraTrac scans further down in the manual section of this page.
	Activating the MaraTrac Remote Squelch Pot   by Robert Meister WA1MIK It seems many of these low-band radios come equipped with the remote squelch pot, but the radio doesn't know it's there. This article shows what seems to be the problem and how to fix it.
	An overview of the Motorola Radio Service Software (RSS) and the Radio Interface Box (RIB)   By A. Nony Mous and friends Some problems and some solutions... Compiled from information provided by several knowledgeable folks.
	An Overview of the SM50/SM120 Radios       by Robert Meister WA1MIK Information about the Motorola VHF and UHF SM50 and SM120 mobile radios.
	Adding analog modulation to a 900 MHz Nucleus-II paging transmitter for 927 MHz amateur service   By Robert W. Meister WA1MIK
	Information and Modifications on the MTR2000 Base Station and Repeater
	Info on the Genesis Series of Handheld Radios   by Mike Morris WA6ILQ This series includes the HT600, the HT600E, the MT1000, the MTX800, the MTX Classic and the MTX900.
	Anybody want to do a similar article on the Jedi series? (includes the GP900, GP1200, HT1000, HT1100, JT1000, MT2000, MT2100, MTS-LS, MTX838, MTX2000, MTX8000, MTX9000, MTS2000, MTS2010, MTS2013, PTX1200, and the PTX3600) We do not have a lot on the Jedi but we do have a Jedi model chart (but it does not cover all the models).   We do have a Jedi Antenna Identification Chart, a four page spec sheet, and a 24-page specification sheet, chargers and accessories description sheet as well. BTW, the plastic piece in the Jedi belt clip is hard to break but can be done. If you want to save a few dollars on the repair you can order just the plastic - it is part number 42-05524W04.
	Or the Waris series? (which includes the GP320, GP328, GP338, GP338-LS, GP329, GP339, GP340, GP360, GP380, HT750, HT1250, HT1250LS, HT1550, HT1550XLS, GP140, GP320, GP330, GP328, GP329, GP338, GP339, GP340, GP360, GP380, GP640, GP650, GP680, GP1280 PTX700, PTX760, PTX780 ATS2500, MTX850, MTX850LS, MTX8250, MTX8250LS, MTX900, MTX950, MTX960, MTX9250 PRO5150, PRO5350, PRO5450, PRO5550, PRO5750, PRO7150, PRO7350, PRO7450, PRO7550, PRO7750, and the PRO9150) Note that Moto marketing screwed up and has a MTX900 model in BOTH the Jedi and Waris product lines. If you are buying a MTX900 make sure which one you are getting. They are VERY different.
	Using the Motorola GR1225 or GM300 as an IRLP repeater   By Don L. Blanchard, WA7GTU Plus a few notes about using the R1225 / GR1225 as a full duplex point-to-point link radio,
	The Quantar and Quantro Stations A collection of information about the Quantar and Quantro base/repeater stations. Repeater-Builder welcomes additional interfacing information, manuals, or articles.
	Making your own TRN-4224A PL tone plug   by Mike Morris WA6ILQ This device is used in mobile radio internal PL boards (i.e. Mitreks, Syntors, Maxar, Moxy, etc.), Systems-90 multi-PL mobile encoders and some other models. This article is oriented towards the Mitrek and the HLN4181 since I first ran into the TRN4424 when modifying a Mitrek that had an HLN4181 tone board in it. Despite that, this information is valid for any equipment that uses the TRN-4224 plug-in tone element.
	Making your own TRN-6005A DPL code plug   by Jerry Matthews WAØUZI A quad DPL board for a Micor base station is shown in the article, but the techinque is universal to any equipment that uses the TRN6005 including Mitreks, Syntors, Systems-90 multi-DPL mobile encoders, MSR2000 stations, and others. This article also includes a table of normal and inverted DPL codes.
	Modifying the Moto touchtone mobile microphone for 16-button operation   1.89 MB PDF file  By Jim Reese WD5IYT
	The Motorola Portable Test Set Page Information on several vintages including the P-8501, TU546, S‑1056 / 1057 / 1058 / 1059 series, R-1033, RTX4005 and several base station / repeater test sets.
	The R100 and MCR100 Repeater Stations Most of the information on this page covers the UHF stations, and it includes PDF scans of the Instruction (service) manuals and other articles. Repeater-Builder welcomes additional interfacing information, manuals, or articles.
	Translating the date code on a Motorola battery   by Mike Pugh KA4MKG
	Determining Date of Manufacture from the Serial Number   by A. Nony Mous
	Info on the T1480 series high band 4-can duplexer / cavity filter panel   1.14Mb PDF file by Eric Lemmon WB6FLY This is the official Moto manual that covers the two-cavity and four-cavity models (1481, 1482, 1485A, 1485AF, 1487A, 1487AF)
	Info on the Motorola T1500 series 4-can UHF duplexer / cavity filter panel   by Mike Morris WA6ILQ There's a lot of info on these units, so they have their own web page.
	The manual for Motorola's S1318A, S1319A, S1320A, S1321A and S1329A Signal Generators PDF'd and donated by Howard Thompson K2LAW
	The manual for Motorola's PAC-RT mobile extender   part number 68P81010C06-B, 2.9 MB PDF This unit is commonly called a PAC-Rat, and it superceeded the PAC-PL and was Moto's answer to the Pyramid mobile extenders.   The PAC-RT, like the Pyramid, is NOT a mobile repeater, it is a unit that functions something like a simplex autopatch, only instead of a phone line it conencts to a mobile radio on a different band.   The PAC-RT allows a patrol officer to talk on the high power patrol car radio from his HT.   While this file is of the low band manual, the difference between the low band, high band and UHF models is in which radio board is installed, and that board is essentially a Handi-Com handheld less the case, volume and squelch pots and the final transistor (which lowers the power to 1/4 watt, but the final can be added back in easily).   Changing bands is as easy as changing radio boards.     I've seen a PAC-RT that had the radio board missing and cabled to a Midland 13-509 220 MHz radio.   One major user of mobile extenders is the California Highway Patrol, they have a statewide low band radio system with the patrol cars talking at 39 MHz and receiving at 43 MHz.   The officers carry HT1000s on 16 channels, one of which is the mobile extender (near 155 MHz).
	Schematic of the Motorola RF signal generator   a 100 kB GIF file donated by A. Nony Mous This is the Motorola version of the Measurements Corp. Model 80 generator. All he had was the pullout schematic - he's still looking for the rest of the manual... If anybody else has it, let us know.
	Moto transistorized voltmeter manual ‑ models S1051 and S1053C   2.9 MB PDF     Donated by A. Nony Mous
	Motorola S1067 transistorized audio oscillator manual   4.6 MB PDF   Donated by A. Nony Mous
	Motorola S1339A RF MilliVoltmeter Instruction Manual   4.6 MB PDF     Donated by A. Nony Mous It's actually the Boonton 92E manual, but the Moto S1339 was a relabeled Boonton, so it works just fine.
	Moto "Transistorized Dispatcher" radio   7.2 MB PDF   Photo   This is the manual for the 1965 D33CMT series - a 15w pre-Motrac model. Note from WA6ILQ: I have good memories of the CMT - I used one of these as a base station on a couple of local 2m repeaters for several years in the mid to late 1970s / early 80s.   Adding enable / disable switching to the PL encoder took a SPST switch and a piece of wire.   Adding a second encode tone took a DPDT switch, a reed socket and a second reed. Later on it got more reeds. The CMT replaced a Link 1905ED mobile that had received power transformers in place of the receiver vibrator and transmitter dynamotor. I also hand ground the FT243 crystals for it. The CMT was later replaced with a 12-channel Motrola Metrum II (which got the reed switch, additional reed sockets and the reeds).
	Moto "Remote Radio Switch"   5.3 MB PDF   This is the manual for a rather unique special purpose receiver.