For what it's worth, Motorola was split into two different companies early in 2011. There is still some confusion out there as to what products are handled by which company.

Motorola Mobility -essentially everything that is not land mobile / 2-way radio- makes the cable TV boxes, the cellphones and some other things. This is the part Google offered to buy in August 2011 for $12.5 billion. Maybe the new name will be Googorola?
If you go to www.motorola.com you are viewing the Motorola Mobility web site. And that web site has no concept of land mobile / 2-way radio - not even a courtesy pointer.

Motorola Solutions - effectively the old Motorola - makes the land mobile / 2-way radio equipment, the Canopy wi-fi system, and some other things that are radio related. If you go to www.motorolasolutions.com you are viewing the 2-way (etc) company.

Note:   Any Motorola parts or manual prices mentioned on this page (or on any page at this web site) should be taken only as a rough guideline. Motorola adjusts prices quarterly, and offers one set of prices to their dealers/service shops (the so called "National Service Organization" (or "NSO") Pricing, another to "self-maintaining" fleet customers (i.e. those that have their own radio shops... cities, counties, police departments, fire departments, etc) and a third set of prices on their telephone order desk (i.e. retail sales).   For these reasons readers should use the prices mentioned in an article only as a rough indication.   We'd appreciate an emailed update if you discover a major price change.

	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 three-letter-and-four-digit numbering scheme of Motorola part numbers   by Mike Morris WA6ILQ A web page compilation the number breakdown table... the data is combined from from four different vintages of the old Motorola Buyers Guide publication.
	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 Some of the tricks I've picked up over the years...
	Accounting Product Code (APC) List   Submitted anonymously Decodes the first three digits of many Motorola two-way product serial numbers. A work in progress, contributions welcome.
	Mitrek mobile and Mitrek "Super Consolette" table-top base station pages   by Mike Morris WA6ILQ See the MSR2000 Station pages for the base station version of the Mitrek.
	MSR2000 Station Pages   by Mike Morris WA6ILQ
	Syntor, Syntor X, Syntor X9000, MCX, MCX100, MCX1000 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. Corrections and contributions welcome.
	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.
	Spectra TAC Receiver and Comparator Index Page All of the information and articles relevant to the voting comparator and Micor receiver-based Spectra TAC receivers and Auxiliary receivers can now be found on this page.
	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 MSF5000 and PURC5000 Stations Note that the "PURC" station is Micor based and you should look there. This page is limited to the MSF5000 and related stations. At the moment most of the information on this index page is UHF and 900 MHz, but that totally depends on the information donations that we get... Repeater-builder would welcome any additional articles (on any band).
	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. This radio series included the MX300, MX310, MX320, MX330, MX340, MX350 and MX360 handhelds, the PX300 and PX500 packsets, the MTR300 firetower repeater, the "APCOR" emergency medical repeater, and several others.
	The Motorola MaraTrac Mobile Radio Index Page Articles and information on the MaraTrac series mobile radios.
	The Motorola Control Cable Connector Virus   by Robert Meister WA1MIK While this happened to some MaraTracs, it can also happen to a lot of other remote-mount radios that have control head cables and connectors. This article tries to explain which came first: the bent pin or the bad cable connector. It shows 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
	The MTR2000 Station Information and Modifications page
	Info on the GP6x Series of Handheld Radios   by Mike Morris WA6ILQ This series includes all of the GP6x series (including the GP68) plus the AP73 radios.
	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 an 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. One note on Jedi model numbers: The letter in position 4 is the frequency range: J=136-162, K=146-174, M=190-235, Q=403-437, R=403-470, S=450-520, W=896-941 MHz. Position 6: D=no keypad, H=keypad. Position 10: 1=2 channels, 3=16 channels, 4=48 channels, 7=160 channels. There is an option that will do 255 channels. The multiple (or "gang") charger for the Jedi series is the NTN1177 (117 vAC) and NTN1178 (220v AC) unit. It has 6 pockets and can charge ni-cad and ni-mh batteries. The service manual is part number 68P81106C66-D and is a 1.97 MB PDF. It can be downloaded here. The manual lists the 9 different battery model numbers that fit the HT1000 / MT2000 radios. The same charger can be used on HT600, MT1000, P200, Saber, and VISAR radios by changing the pocket plastic piece (no, it's one piece of plastic for all 6 pockets, you can't mix the pockets like you could with the HT200, HT220 and MT500).
	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 with 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. Note that the GR1225 and R1225 (its rack mount cousin) are not related to the M1225 mobile radio.
	The Quantar and Quantro Stations A collection of information about the Quantar (standard) and Quantro (high power) 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 TRN4224 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 in the DPL board including Mitreks, Syntors, Systems-90 multi-DPL mobile encoders, the Spectra TAC Receiver, Satellite Receiver, Auxiliary Receiver, 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, R1033, RTX4005 and several base station / repeater test sets.
	The R100 and MCR100 Repeater Stations These wall-mount small repeaters are available in VHF and UHF models. 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.
	Motorola TPN1136A, TPN1154A, HPN3000A, and VPN1013A Power Supply Schematics Schematics only, provided by Eric WB6FLY and posted by Bob WA1MIK. Also includes load tests (run by Eric) of the TPN1136A and TPN1154A power supplies.
	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 by Eric Lemmon WB6FLY This is the official Moto manual that covers the two-cavity and four-cavity models (T1481, T1482, T1485A, T1485AF, T1487A, T1487AF)
	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 Manual number 6881061A75-A, 21 MB in size, PDF'd and donated by Howard Thompson K2LAW
	Manual for the Motorola R1013A SINAD meter   401 KB PDF Manual number 6881069A81, donated by John Crabtree KCØG
	The manual for Motorola's PAC-RT mobile extender   part number 6881010C06-B, 2.9 MB PDF This unit is commonly called a Pac-Rat, and it superceeded the PAC-PL unit and was Moto's answer to the early mobile extenders made by Pyramid company.   The PAC-PL and the PAC-RT, like the Pyramid, are NOT mobile repeaters, they function something like a simplex autopatch, only instead of a phone line the unit conects to a mobile radio that operates on a different band.   Any mobile extender allows a patrol officer to talk on the high power patrol car radio from his handheld.   While this file is of the low band PAC-RT manual, the difference between the low band, high band and UHF PAC-RT models is in which radio board is installed. The radio 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 frequencies is as easy as changing a channel element in a HandiCom, and 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 that had been modified for electronic (relayless) antenna and transmitter switching.   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 (repeater input), at 43 (talkaround) and receiving at 43 MHz.   The officers carry HT1000s on 16 channels, one of which is the mobile extender frequency (near 155 MHz).
	Moto "Transistorized Dispatcher" radio   68P81018A95-B   7.2 MB PDF   Photo   This is the manual for the 1965 D33CMT series - a 15 watt 2-channel 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.   Locating a power cord with the correct connector was the hardest part, I finally had to make my own.   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 to select the encoder reed, an additional reed socket and the second reed itself. Later on it got more frequencies, reeds and reed sockets. The CMT replaced a Link 1905ED mobile that had received power transformers in place of the receiver vibrator and transmitter dynamotor (the Link became my 146.70 RTTY receiver). I also hand ground the FT243 crystals for Link. The CMT was later replaced with a 12-channel Motrola Metrum II (which got the reed selector switch (by this time it was an 8 position rotary), the additional reed sockets and the reeds). The Metrum was a interesting radio - one crystal for receive, simplex and repeat. The carrier squelch circuit was trash, it got a Micor chip.
	Moto "Remote Radio Switch"   5.3 MB PDF   This is the manual for a rather unique special purpose receiver (model number C1186B, C1186C, C1240A, C1240B, C1242A, C1242B, C1243A and C1244A). The manual number is 6881071A85-G. I know one person that ended up with one of the 139 MHz units and uses it as a garage door opener receiver.
	If you have a transistor or other part with a Moto logo and a 4-digit number and the book doesn't show a part number try putting "48-86" in front of the four digit part number - then look it up at www.myradiomall.com - or Google it (i.e. a M9102 becomes part number 48-869102 or 46869102. You just might get a hit.
	Motorola Touch Up Paint Colors   by Mike Morris WA6ILQ For years Moto has offered spray cans of color matched paint in their parts catalog. This is a list of the colors and part numbers that I know of, and the usage. Corrections and additions are quite welcome.

Miscellaneous Test Equipment / Operating / Service / User / Parts / Accessories manuals:
Manuals for radios that have their own pages (like Saber, Spectra, Mitrek, MaxTrac, MSF, MX, HT600 / MT1000, etc.) are on that appropriate page.

	Motorola-manufactured and Motorola-branded test equipment is on the Motorola Test Equipment page.
	C74MSY series community repeater service manual   27.8 MB PDF scanned and donated by Eric Lemmon WB6FLY This is the Motrac / Motran vintage base station (pre-Micor) repeater. The C74MSB series were the base station version of the same radio and this manual will be very useful on those radios as well..
	AP73 Operators Instructions   420 KB PDF     Donated by A. Nony Mous The AP73 was a poorly done rehash of the GP6x series commercial handheld for the amateur radio market. If it had been marketed properly, and with a larger battery it would not have flopped. The first few pages are a quick reference card.
	CDM Series Product Overview   3.3 MB PDF NOTE: The CDM series is the current replacement for the Maxtrac / Radius / GM300 product line.   At first glance you'd think that a Maxtrac microphone will fit your CDM.   Yes, it will but you won't like the results and you WILL be sorry... eventually.   The CDM uses a 10 pin RJ-style mic jack, where the Maxtrac uses an 8-pin.   Yes, you can force a 8-pin plug into the jack, but the solid plastic outer ridges of the plug will compress the outer two pins of the 10-pin jack up into the body of the jack and damage the jack.   Not all mics use them, so you may not realize that the pins aren't making contact until the user changes mics to one that uses those pins.   You may have to change the mic jack later on and it's not an easy fix (the procedure is on the Maxtrac Introductory Information page at this web site).   Best to use the 10 pin mics made for the CDM, and make up a 6 inch long 10-pin-plug to 8-pin-jack adapter cable for your Maxtrac programming cable.
	CDM1250 User Guide   2.2 MB PDF Note: You cannot program a CDM1250 out of it's specified range. There is no "hack" as the range is permanently masked into the CPU. This may be true of ALL the CDM series.
	CDM1250 Specification Sheet   60 KB PDF
	CDM750, CDM1250, CDM1550 Parts Lists and Accessories   381 KB PDF
	GP300 Parts List and Accessories List   1.2 MB PDF     Donated by A. Nony Mous The GP300 and the GTX handhelds use a lot of the same accessories, including batteries.
	GP640 Users Guide   6864110B24-A   1.97 MB PDF
	GR1225 Brochure   152 KB PDF     Donated by A. Nony Mous
	HT50 Brochure   1.1 MB PDF   Donated by A. Nony Mous
	HT50 User Guide   6881055C65   2.4 MB PDF   Donated by A. Nony Mous
	HT750/1250/1550 Brochure   1.1 MB PDF   Donated by A. Nony Mous
	HT750/1250/1550 Basic Service Manual   6880906Z54   5.2 MB PDF   Donated by A. Nony Mous
	JT1000 Operators Instructions   583 kB PDF     Donated by A. Nony Mous    The last page is a quick reference card.
	M1225 Catalog Sheet
	M1225 Service Manual   28.5 MB PDF donated by Eric Lemmon WB6FLY
	MaraTrac Sales Brochure   92 kB PDF   Donated by A. Nony Mous
	MaraTrac Low-Band Service Manual   6880102W95-O   25 MB PDF   Donated by A. Nony Mous If anyone has manuals for other bands (i.e. high band or UHF) please let us know.
	MaraTrac Low-Band Remote Squelch Supplement   FMR-1735A-1   Supplement for the low-band service manual above.   3.7 MB PDF   Donated by Robert Meister WA1MIK, scanned by Eric Lemmon WB6FLY
	Radius M400 Service Manual   6880901Z56-O   33.5 MB PDF   Donated by Eric Lemmon WB6FLY This one manual covers all three splits / ranges on low-band, 150-174 MHz VHF, and 450-470 MHz UHF models.
	MC-Micro Service Manual (403-470MHz)   Incomplete. From 6884828D06-3   6.9 MB PDF   donated by A. Nony Mous The cover page is in German, the rest is in English.   This is the manual on what is commonly called the German Maxtrac. Two of these mobile radios were used in the German MC-Micro repeater, which was redesigned into the MCR-100 repeater which was redesigned into the R100 repeater. When MPT1327 came along the MC-Micro mobile radio was updated to support that type of trunking. Here is the service manual (68P02900B04-A dated August 1991) on the MPT1327 version of the MC-Micro mobile. Until you look closely at the manual you would think that most of the text is in German, but you will find that Section 1 has the first 12 pages in German followed by pages 13-24 in English followed by pages 25-36 in French. Since the diagrams within the text in Section 1 are identical in each language you will probably want to download the file and print just the page group that is in your native language. The page that is after the last French page in Section 1 is the header page for Section 2. That section is all in English and contains all the circuit diagrams, board diagrams and parts lists.
	Motrac UHF Consolette Service Manual   68P81005E15-C   20.9 MB PDF   Donated by Eric Lemmon WB6FLY This manual covers the L34MHB and L44MHB series of tabletop base stations that were derived from the UHF MHT series Motrac mobile radio. Similar stations were developed later using Motrans, Mocom-70s and Mitreks with different color plastic (Motrac and Motran were tan, Mitrek was black). I've used part numbers from this manual to order parts for the later stations (like switches, transformers, etc).
	Railroad High Band Motran Service Manual   68P81041A15-G   18.3 MB PDF   Donated by Eric Lemmon WB6FLY This manual covers the R43MST and R43MSB series radios. The low power regular (i.e. non-railroad) MSN-series Motran mobile was a 12vDC radio - it had no power supply and operated off the vehicle battery directly. The high power regular Motran (the MST series) had a 12v receiver, a 12v exciter and a 24v PA deck. The transistorized power supply acted as an up-converter from 12v to 24v and was slaved to the PTT line. The railroad version of the MST was unique in that it was a low power MSN RF section with a MST series power supply that had been redesigned to operate full-time and acted as a down-converter to deliver 12 volts from the 64vDC input. In 12v mode the t-supply was bypassed for use in vehicles or on the test / repair bench. The base station version (the MSB units) operated on 117vAC.
	Micom 2 HF-SSB Mobile/Fixed Digital Signal Processing Radio Catalog Sheet   213 KB PDF
	Micom 2E ALE HF-SSB Transceiver Owners Guide   6802952C60-O   679 KB PDF
	Micom 2 ATU Mobile Automatic Antenna Tuner Installation Manual   6802948c35   126 KB PDF This is a supplement to Service Manual 6802948C35-O
	Micom 2 F2366A Power Supply Manual   68P02981G61-A   2.17 MB PDF donated by Larry Horlick by way of Eric Lemmon WB6FLY
	L1158 and L1159 MRTI Service Manual   2.5 MB PDF   Donated by Eric Vincent VE2VXT The MRTI is a generic name for a line of Mobile Radio Telephone Interconnect units that was made for Moto by another company - they were essentially a commercial autopatch unit. The MRTI units were an option starting with the Micor stations.
	L3276 Tone Remote Adapter Installation and Troubleshooting Manual   3 MB PDF   Donated by Jim K1VTY The tone remote adapter lets you control a mobile radio at a remote location from a desktop console using high-level guard-tone signalling commonly used with full-size base stations.
	Motorola MT500   Manuals (and more) list The MT500 was the follow-on radio to the HT220 and were first introduced in February of 1977.   The "A" revision manual covers VHF (H23BBB, H33BBB, H23BBU, H33BBU) and UHF (H24BBB, H34BBB, H24BBU, H34BBU) units.   The low band radios (H31BBB and H31BBU) came out later and are included in the "B" revision of the manual.   By the way, this manual pair is a good example of the later manual (the "B" revision) having less info on some topics that the earlier one (the "A" revision).   If you are working on MT500s you will probably want to download both manual versions.   Where the prior models (the HT200 and 220) used crystals the VHF and UHF models of this radio use small channel elements, the low band units use crystals.   BTW, the transmit elements (either a KXN1083A or a KXN1042A) have five pins and receive elements (KXN1075A) have only three pins. Since the PT500 is a MT500 in a "lunchbox" case with a big battery those folks working on the PT500 radios will find the handheld manuals useful. There used to be a web site at www.mt500.com that had a great deal of information on these radios but it went away in mid-2003. Also, there used to be a web page that gave information on the channel elements at http://users.leading.net/~radiotr/MT500 but it's gone also. If anyone knows who ran those web pages we'd be happy to talk to them about rehosting the information.
	MT2000 Catalog Sheet   83 kB PDF     Donated by A. Nony Mous
	MT2000 Parts List and Accessories List   1.4 MB PDF     Donated by A. Nony Mous
	MTS2000 Spec sheet   100 KB PDF     Donated by A. Nony Mous
	MTS2000 Parts List and Accessories List   1.98 MB PDF     Donated by A. Nony Mous
	MTX9000 User Manual   817 kB PDF     Donated by A. Nony Mous
	Spirit "M" series owners manual   541 KB PDF   6880905Z70   Donated by A. Nony Mous See also the "XTN" series manual below. The channel charts in it apply to the Spirit M as well.
	Triton-20 HF-SSB radio Instruction Manual   6881044E20-A   8.9 MB PDF
	XTN Series User Guide   6864110R04   2.9 MB PDF     Donated by A. Nony Mous The channel charts in this manual are also applicable to the Spirit M, GT and S series radios.
	The replacement microphone coiled cord for the Mitrek, Micor, Syntor and several others (not the Spectra) is part number 083731M01
	H23BAC, H23BAM, P33BAC, P33BAM Handi-Talkie Instruction Manual   6.1 MB PDF     Donated by Eric Lemmon WB6FLY These are the hybrid transistor and subminiature tube based high band pack sets (the "luggie-talkies" or "hernia talkies")
	Canadian VHF PT300 (1.4w) Manual   6.7 MB PDF     Donated by Eric Lemmon WB6FLY This is for the CP23DDC and CP33DDC radios.
	P23DEN PT200 (2w) and P33DEN PT300 (5w) high band Service Manual   9.3 MB PDF     Donated by Eric Lemmon WB6FLY
	P21DDN PT200 (1.4w) and P31DDN PT300 (5w) low band Service Manual   8.6 MB PDF     Donated by Eric Lemmon WB6FLY
	P43DEN PT400 (10w) high band Service Manual   10.6 MB PDF     Donated by Eric Lemmon WB6FLY The PT200 was essentially an HT200 in a heavy duty plastic lunch-pail style box with a big battery and a half-decent antenna. It was very popular with utility workers. The PT200 offered two sizes of ni-cad battery packs and had an optional battery pack that held 10 "D" cells. I had a PT200 that I moved from 43 MHz to to 52.525 MHz and a 10-pack of fresh "D" cells would last over a month of receiving. The PT200 was 2 watts, the PT300 and PT400 had a small RF amplifier - and due to the higher current drain of the 300 and 400 the manual recommended using only the ni-cad batteries as it could kill the "D" cells rather quickly. CAUTION: The HT200 and PT200 / 300 / 400 are positive ground internally. DO NOT use both a cigarette lighter cord AND a mag mount at the same time on a negative ground vehicle or you will have an internal meltdown.
	Bubble-Pack radio "Privacy Codes": Motorola makes several "bubble pack" models in the MURS, GMRS and FRS lines that have "privacy codes". Here is a translation table that works on most of the "Talkabout" line, it may be valid for others (please let Mike WA6ILQ know at (his-callsign@repeater-builder.com). Of course we all know that PL, DPL ("CTCSS", "DCS") doesn't really "fix" anything, nor does it give you any privacy. And that the tone or code numbers are different between manufacturers, and sometimes between different product lines in the same manufacturer.
	Motorola microphone manual number 6880309C84: This manual covers the DTMF microphones with the following part numbers: TDN8305A/B, TDN8306A/B, TDN8307A/BSP, TDN8309A/B, TDN8310A/B (DTMF Maxtrac). As of April 2011 this manual was still available for about US$2.10.
	Motorola microphone manual number 6881085E15: This manual covers the Auto-Dial Touch Code Encoder Palm Microphones with Backlit Keypad with the following part numbers:   TMN6169A (DTMF Maxtrac Conventional), TMN6170A (DTMF Maxtrac Trunked), TMN6171A (DTMF MaraTrac with the A2 and A3 heads), TMN6172A (DTMF MaraTrac with the A7 head), TMN6173A (DTMF Spectra Conventional), TMN6174A (DTMF Spectra Trunked), TMN6175A (DTMF Mostar Conventional), TMN6176A (DTMF Mostar Trunked). As of April 2011 this manual was still available for about US$3.66.

If anyone wishes to donate additional manual scans or hard-to-get part numbers, let us know. We'd really like to get information (including parts lists and user manuals) for the Saber, Astro Saber, XTL, XTS, MCS and MTS series.

20 kHz Spacing on UHF and Motorola Radios     A brief history of the UHF 20 kHz spacing issues in southern California and how some radios deal with it.     Compiled by Mike Morris WA6ILQ

History:

	The First Walkie-Talkie Radio, An Affectionate Look Back in Time and Some Thoughts About the First True Fabled Walkie-Talkie   1.6 MB PDF, by Leonard H. Anderson, 25 June 2005 More on what would be considered portable radios than handheld radios, bue still very interesting.   This writeup was sent to repeater-builder anonymously, and I have not been able to locate Mr. Anderson to see if he is an amateur radio operator.
	A very interesting web page on the history of Motorola Land Mobile radio Well worth reading - and yes, 33 MHz was once considered to be the ultra-high-frequencies!   by Geoff Fors, WB6NVH   (offsite link)
	The Mobile Telephone In Bell System Service, 1946-1985   Another page from Geoff Fors, WB6NVH   (offsite link)
	Mobile radio as used by the California Highway Patrol from the 1960s to current   Another page from Geoff Fors, WB6NVH   (offsite link)
	California Highway Patrol Motorcycle Radio History   Another page from Geoff Fors, WB6NVH   (offsite link)
	California Highway Patrol Radio 2001   Another page from Geoff Fors, WB6NVH   (offsite link)
	California Highway Patrol Radio 2009     Touch screens while in pursuit ? What ARE they thinking?   Another page from Geoff Fors, WB6NVH   (offsite link)

If anyone is aware of other land mobile history pages please let repeater-builder know.

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