Batboard

train_radio_guy

I believe the front case of the Maxtrac & the GM300 are structurally the same inside, so they would be compatible in that respect. I think the pinout of the volume & channel/system board in the front head is the same as well, so long as we're talking a Maxtrac with the 7-segment display. Obv...

train_radio_guy

Although I've been out of the 2-way Radio Industry for a few years, I've worked in the Telecom Industry for nearly 23-years. When it comes to timing on T1/DS1 or HiCap Circuits, the timing in the Central Office is derived from a centralized BITS Clock. Typically, they use a GPS Timing Source as the ...

train_radio_guy

Do you have a location, as to where JU801 is located? I went through the online copy of the MaxTrac Service Manual (68P80102W84-O), on Repeater-Builder, and I could not find anything listed for JU801. In typical Motorola nomenclature, JU usually refers to a Jumper, & F usually refers to a Fuse. ...

train_radio_guy

Sounds like a microphonics. When I worked on GE-Ericsson radio equipment in the mid-1990's we had the problem with a number of radios. Usually poor grounding was the cause, or faulty shielding. I'd start by double-checking any chassis screws, and be sure they're properly tightened. Then move to shie...

train_radio_guy

I'm not sure that's possible. Railroad version ran its own 'flavor' of firmware, and as such was unique onto itself. Swapping the RF Deck out with a narrowband unit, the old & the new may not play nice together. If it's been done successfully, I've not hear of it.

train_radio_guy

Years ago it was either Maxrad or Larson. These days, perhaps PCTel.

train_radio_guy

https://live.staticflickr.com/4860/45756401712_64647a4ee2_k.jpg Well, Flickr still works utilizing the "Share Photo" option, along with a portion of the BBCode option. I've been on Flickr for quite some time, but I believe they're still free, for the first few hundred photos. Something to...

train_radio_guy

Possible Static/Power Surge fried microprocessor? Just for curiosity-sake, have you tried a different battery? If there's no power-up tone, & external controls are unresponsive, and I'd say the microprocessor has an issue, and this may require a trip to mother /\/\. Without the ability to access...

train_radio_guy

Try JoAnn Fabrics or Michael's. They sell similar materials by the yard.

train_radio_guy

Since we're talking about getting a computer that works effectively with the M1225 RSS, I don't think you're terribly off-topic. In my research for locating computers that reliably support the older RSS & CPS, long-term mom & pop computer shops are definitely a good option - when you can fin...

train_radio_guy

Kenwood TK-705D & DH's are also well at covering the 2-meter ham band with little or no retuning. Sadly, they have no external accessory connector, so some internal work is required. Just a thought.

train_radio_guy

Over the years, my concept of what works has evolved, depending on my needs & what functions best. When it comes to keeping a working machine 'alive', for legacy Commercial Radios (i.e. Motorola, G.E./Ericsson, Kenwood, & Icom) it's been an act of determination & 'love'. My system is com...

train_radio_guy

PETNRDX : For ease of repair, would it be better to focus on a small desktops that will run either DOS/Win 3.1/3.11 or Win95/98SE, or would you prefer to stay with laptops? I ask since it's easier to source parts for desktops, than laptops, which can be a proprietary nightmare, with their specializ...

train_radio_guy

Just remember, once the M1225 is programmed with a new version of the RSS, it can no longer be programmed by a previous (older) version of the software. I believe one of the local 2-way shops in my area, still has an older WXP PC, for programming some of the older radio gear, although they're always...

train_radio_guy

PM Sent

train_radio_guy

I do believe, that I've still got a VHF & UHF, 22-ch M1225 mobile radio, still packed away from our move. Those radios were able to support the new 'narrow-band' FM, so it might be worth my while to get an old PC or laptop setup, so I can program them. I've got other legacy radios (i.e. Genesis ...

train_radio_guy

Let me know what you find. So far, all of my efforts locally have met with one road block after another. With the age/vintage of the MTX-810 & MTX-900 Series Radios, it's proven to be a challenging task, in locating anything but old batteries, chargers, & worn-out speaker microphones. I may ...

train_radio_guy

It was probably after I left the railroad, but I remember one of my friends, who was still working at the radio shop mentioning the M1225 & the finicky software. Back in the late 1990's, we had lots of radios to maintain, just in Motorola Products, we supported the railroad-flavor of the Spectra...

train_radio_guy

When I worked for a railroad some 20 years ago, we had a few M1225 installed... mostly in supervisors' vehicles. To program them, we had a couple of machines. In the radio shop, we had an older 386DX running DOS 6.22 & Windows 3.11. In the field, we had laptops, loaded with Windows 95. As for th...

train_radio_guy

If you're able to locate the Service Manual(s), & Theory & Maintenance Manual(s), for the Motorola MTX-810 & MTX-900 Series Radios, I'm sure we can work out the shipping costs. I have access to a bed scanner, that can accommodate 11x17 sheets of paper, so I can probably scan-in whatever ...

train_radio_guy

I realize it's been nearly 9-months since you last posted. How did things play-out with your friend, & his M1225 radios? Just curious.

- trg / Paul,

train_radio_guy

I'm working on a project, and I'm trying to locate technical documentation for the Motorola MTX-810 & MTX-900 Series Radios. Specifically, I'm looking for the Service Manual(s), & Theory & Maintenance Manual(s). Both radios were part of Motorola's Genesis Radio Series, and all parts &...

train_radio_guy

Back in the mid-1990's, the 2-way shop I was working for at the time, was installing GR300 & GR500 repeaters; mostly UHF, for everyone under the sun. We installed them at the area hospitals, shopping malls, industrial customers, & even the county jail. I think the advertised price for a GR30...

train_radio_guy

Looking for more of a wide-band antenna, like the Motorola 8505518V01 NAD6563 (136-174 MHz), 8 inch.

Any reliable sources?

train_radio_guy

Well I knew the day would come, when the antenna on my trusted JT1000 would crumble.... simply out of age & use. Some folks refer to it as de-vulcanizing, while others simply call it dry-rot. Either way, the antenna is in dire need of replacement, and I've been out of the industry for well over ...

train_radio_guy

I completely forgot about the HT90/HT440 portables. I owned one for a short period of time in the mid-1990's, but I never had the occasion or need to service it. Sadly, I have no documentation for it, so I can't check for the spanner in the service tools.

train_radio_guy

I misunderstood the nature of your request. A picture of the spanner tool in question, would help to identify it. Since you haven't been able to post a picture on the Batboard in some time, perhaps you could post a link to a picture of it, via an external site like Flickr. For example, https://www.f...

train_radio_guy

I know of a few radio techs back in-the-day, who 'modified' an appropriately-sized deep-well nutdriver or socket, with a small grinder, to work as a spanner wrench. The wrenches weren't pretty, but they did the job, without destroying the nut. There were also some spanner sockets, which could be att...

train_radio_guy

Was this the spline tool, made to remove the set screws the volume & channel knobs, from the HT-200 days, or are we talking about a nut that holds the volume & channel selector? One was made by the Bristle Company, while the later was a custom-made tool, which was produced by Xcelite.

train_radio_guy

Was it the Motorola or G.E. Suitcase programmer, which used a Casio Computer, ZIF Socket for the PROMs, and a thermal printer for the printed data? I haven't used one since 1994/1995. And you're right about not burning a batch of the PROMs, until you were absolutely sure everything was programmed &a...

train_radio_guy

The Mostar Radio Series is definitely what some would call vintage, compared to the Moto gear of today. It was synthesized though, so it wasn't 'rock-bound' or didn't require crystal elements for each channel. I don't recall if it programmed via RSS (Radio Service Software), or if it required the cl...

train_radio_guy

Tom, At least on the open web, this was all I was able to locate: 01. The Mostar Mobile (Batlabs Page) : http://www.batlabs.com/mostar.html 02. Mostar Information and Programming Source : http://www.brinkleyelectronics.com/mos/mostar.html 03. Mostar Speaker/Amplifier - Instruction Manual (Model # HS...

train_radio_guy

Assuming your MT1000 has the correct code plug, for that specific model & band split (i.e. VHF-Low, VHF-High, or UHF), it might be simply a matter of reprogramming the radio, so that it operates within the band limits of that model (hardware-wise). If on the other hand, someone had managed to 's...

train_radio_guy

I own a couple of low band MT1000s (& need new batteries), but I can't say that I've ever run across that error. Repeater Builder is an excellent source of information, on the older radio gear. Here are some useful links, for the MT1000 Genesis-Series Radios: MT1000 Operating Instructions : - ht...

train_radio_guy

Back in the mid-1990's, when I worked at one of our local 2-way shops, we got the contract for the local mass transit or bus service, in the region. They originally had /\/\ UHF Micors, with the traditional telephone-style handset. As they upgraded their fleet, from the older Flxible Buses, to the n...

train_radio_guy

We actually used quite a few of the PT500s, when I was still working on the CCP/IC. The MOW (Maintenance-of-Way) guys, as well as the Conductors of the day liked these, over the hand-helds, because the PT500 seemed to 'get-out better', as the guys used to say. We had two different versions. I believ...

train_radio_guy

Pretty much so. And eventually, those wonderful salesmen leave with their golden parachute, after effectively destroying the reputation of the company & driving-off the last of the customers, just before the whole operation comes crashing down. That's it in a nutshell.

train_radio_guy

I remember installing the Ritron Repeater Plus units, back in the mid-1990's. They were an all-in-one UHF Repeater (RX Radio, TX Radio, Duplexer, & controller/interconnect), designed for a low duty-cycle usage. We had a few systems, which were scattered across our service area, for some of the l...

train_radio_guy

I believe HMN9416 / HMN3141 Handset is a 'water-down' version, or a foundational/base model, on-which Motorola built the cellular handsets, for their transportable/mobile/bag phones, during the AMPS/Analog Cellular Days. I've heard of a LMR equivalent with an actual DTMF Keypad integrated into the h...

train_radio_guy

Unfortunately, I've had some bad luck with the SSD Drives. When they die, there is absolutely no chance for data recovery. That being said, their speed & access times, definitely rival any of the mechanical drives, but their life expectancy is rather questionable. I haven't experimented very muc...

train_radio_guy

It’s unfortunate that you’re running out of them. Going the route of local computer shops is good idea, however that presents a few of problems of its own. 1. There just aren’t that many ‘mom & pop’ computer stores left in our area. Most of them have closed their doors; some just in the past few...

train_radio_guy

Finding Low Band VHF Radios, that truly cover 30-50 MHz with no gaps & good sensitivity can be a challenge, but they are out there, whether you're talking Commercial/LMR, Amateur, or Military. I also had a GE-Ericsson Orion on Low Band, and it performed very well, both in sensitivity & power...

train_radio_guy

g8tzl2004, if you really want a radio that covers 30-50 MHz, for 'receive' only purposes, there are a few high-end Amateur Transceivers, which fit the bill (no pun intended) quite well. They are the Yaesu FT-650 (24.5 - 56 MHz) & the ICOM IC-575H (26-56 MHz). They’re both all mode units (i.e. FM...

train_radio_guy

Jim, how many of those hard drives under 80GB do you have? What are some of the sizes? I've got some computer projects coming-up in the near future, & might be interested in taking them off your hands... for the right price.

train_radio_guy

Most of the older Data Decoding Programs (i.e. MDT, RD-LAP, Paging, etc...) were designed around either a 2 or 4-Level Data Slicer Circuit, that connected/interfaced with a traditional 'true' serial port, rather than a USB-to-Serial Adapter or through a Sound Card, on a computer. The associated appl...

train_radio_guy

If you really want a broadband radio, and money is no object, try either a Wulfsberg http://www.wulfsberg.com or Harris Military Tactical Multiband Radios http://www.harris.com/solution-grouping/tactical-multiband-radios . Either of those will save on the headache of needing RSS/CPS, cables, RIBs, a...

train_radio_guy

I'll have to dig out the mics, one radio, and put them on the bench. After running them through some tests, while tracking the model # of each mic & its respective performance, I hope to have a better idea of what's going on. Since they're used mics, perhaps they're simply dirty. Mics have been ...

train_radio_guy

While this isn't directly related to mshipek's original post, it does relate to Motorola microphones. I've noticed that while a number of the compact /\/\ mics pin-out the same, there seems to be an audio level different between them, when used on the GM900-series mobile radios. Some are quite a bit...

train_radio_guy

Xnke, If you end up needing the multi-channel (i.e. 32/99 ch) displays (GM300 Style), or a 386/486 laptop with DOS 6.22; albeit no RSS, I may be able to help you. The wife has got me cleaning again, and I think I still have a few goodies tucked away, that survived the last cleaning spell! 8) PM me w...

train_radio_guy

Here's the spec sheet on the MR2525L - Overvoltage Transient Supressor: - http://pdf.datasheetcatalog.com/datasheets2/39/399377_1.pdf As for a directly equivalent part, NTE, Mouser, & Digi-Key are turning-up nothing. Perhaps a parts radio might be a perspective donor, otherwise Motorola Parts mi...

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