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Thread: Wierd MT 500 speaker mic

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    Default Wierd MT 500 speaker mic

    Anyone have a clue as to what the story with this is? http://www.ebay.com/itm/Motorola-VIN...21181164487%26


    Whats the rubber thing at the top???


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    That is weird. It looks like the larger MX/MT public-safety type mic, not the normal smaller style mic, but with no antenna or RF connections on it. Maybe that plugs up the antenna hole somehow.

    It also has an extra-thick back with a mobile style hangup clip mushroom on it too, not normally used with a speaker/mic for an HT. They usually have a clip or a velcro patch area. Maybe it's for use in the MTVA Converta-Com, I'm not sure if they accommodate a radio with the speaker/mic still attached to it, but if it does then it's probably for mobile operation.

    Too bad someone painted over the Motorola logo, hope they're not all that way.

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    jlamanske No Longer Registered

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    They used to sell a strap, like a fireman's carry strap with the button type hang up for mics with the same style backing.

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    It is part of a system to replace the clock and key for watchman/security guards. There would be panels on the walls in the factory where the keys would be. You hold the flat top of the mic up against the panel and it burps a signal that is recorded back at the office. The little button on the connector is the man down for emergencies.

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    Quote Originally Posted by y85csm View Post
    It is part of a system to replace the clock and key for watchman/security guards. There would be panels on the walls in the factory where the keys would be. You hold the flat top of the mic up against the panel and it burps a signal that is recorded back at the office. The little button on the connector is the man down for emergencies.
    Beat me to it. I have a brochure for that system at home somewhere. I think they called it "Guard Tour" or something like that. If I can find it I'll scan the brochure if anyone's interested.

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    Quote Originally Posted by 16b View Post
    ... If I can find it I'll scan the brochure if anyone's interested.
    If you can track it down I definitely wouldn't mind having a look. Thanks!

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    Here is the brochure for "Guard Tour III."
    Attached Files Attached Files

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    the electronic Detex clock..

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    You've got to love it when you ask a question like this, and get the system brochure as a reply. Thanks so much for this, it answers my question most completely!

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    chrism No Longer Registered

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    Simply amazing. The stuff you can learn that Motorola made many incredible products back during the crystal HT220, MX, MT500 era

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    i used to work for an OOOOLLLLLD Motorola dealer many years ago, and I remember our service manual library was thick with SP manuals, there was over 100 SP variants of the MX300 series radio, I know I was reading manuals that described such-and-such version SP137 or the like, so there were literally HUNDREDS of "special" variations of each model they made for their specific customers as the versioning started at SP01 and went up from there.

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    There was a gentleman down in Florida selling some factory painted orange SP MX360s on craigslist. They were two prototypes for the Norwegian railroad. I tried to get him to ship, but he wouldn't. Even offered to mail him cash, but no dice. A picture I managed to save of them.


    4zfpvUF.jpg

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    I never understood the Nordic countries obession with orange....I've seen some of those werid Bosch portables even in Orange for use in Sweden.

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    Yeah, and the old orange "Handic" CB radios in the '70's were all the rage if you could afford one. (Google it...)

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    Quote Originally Posted by Avery Johannssenn View Post
    There was a gentleman down in Florida selling some factory painted orange SP MX360s on craigslist. They were two prototypes for the Norwegian railroad. I tried to get him to ship, but he wouldn't. Even offered to mail him cash, but no dice. A picture I managed to save of them.


    4zfpvUF.jpg
    That probably would go with the Orange colored Spectra radio I found in a Locomotive Spectra some years back.

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    I used to have an old Fedex (or maybe it was UPS) 800 Spectra sitting in the parts bin some years ago that had a factory painted orange chassis (the faceplate, heatsink, and covers were all black, or maybe not so much black as "Spectra Plum") Popular color choice apparently.
    Last edited by iamjason; Oct 31, 2013 at 09:10 PM.

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    Quote Originally Posted by WQNV648 View Post
    I never understood the Nordic countries obession with orange....I've seen some of those werid Bosch portables even in Orange for use in Sweden.
    You ever drop something in the snow?
    That's why.

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    Quote Originally Posted by okto View Post
    You ever drop something in the snow?
    That's why.
    Pink survey flagging also fixes the problem with stuff dropped in the snow... Too bad it does not fix stupid though.