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Thread: In Vehicle Rpt

  1. #1
    meadowcst No Longer Registered

    Default In Vehicle Rpt

    http://www.ebay.com/itm/Motorola-Syn...item4d077ae8ba

    It would appear to me that there is an In-Vehicle Rpt attatched , As well as the siren Amp. Any one with any idea as to how difficult programing would be and the specific model of radio as to performance. ?
    Thanks in advance Gents


  2. #2
    Astro Spectra's Avatar
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    The Syntor X is a nice old radio that appeals to old school radio techs but honestly they are a pain to programming and manage. The performance is excellent but we're talking 25 kHz here, the phrase 'narrowband compliant' hadn't been invented when this baby was at its peak. See Mike's definitive site: http://www.onfreq.com/syntorx/

    Unless you're keen on a project I'd jump forward a couple of generations to at least the Astro Spectra platform, which also supports VRS and siren accessories if you really need that kit.

  3. #3
    meadowcst No Longer Registered

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    Thanks !! No I am looking at an Astro Spectra right now but have not come across a ready made package with the In Vehicle RPT .. Looks like a Gov Agency Had these made up 15 years ago right from Motorola !!
    The in Vehicle Rpt would be nice because when i am out in the RM my portable will not key up. As for sirens i could not care less is is already in place. But I appreciate your responce , I now know i am barking up the wrong tree with the Syntor X !!

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    The older VRS systems were crystal controlled (specialist tools needed to set up and not narrow band). Newer units are synthesised but may or may not be compliant with the present rules. The latest units are from specialist company Pyramid and do come up on the Bay from time to time, see http://www.pyramidcomm.com/vehicular...ters-products/

    Lots of stuff to think about here including frequency coordination and maintaining security if you're on a secure P25 system.

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    I don't think that's a VRS, they looks like the siren/PA module except they sport a SO-239 for the VRS antenna. It doesn't look like a PAC-RT, either which is the forerunner of the VRS. It somehow takes the radio RF in and passes it through or combines it with something, so I'm guessing it's some kind of MDT or full-duplex setup like ambulances use with the APCOR radios - coronary observation monitor telemetry radios which use a full-duplex mobile repeater, usually. Otherwise, maybe it's a 3-rd party type of VRS not made by Motorola.

    P.S. - the Syntor X9000 was one of the best radios RF-wise ever made, but it has a couple of shortcomings - no P25 (a deal breaker these days!), no narrowband, and the entire radio is only about 20 MAYBE 30 Mhz wide max, so if you tune low you'll get 144-164 or so, or if you tune high you'll get 150-170 or so but getting the 136-174 coverage we enjoy these days can't really be done on the old X/X9000's. They also can have temperature sensitivity when running out of band (i.e. Ham) if the radio isn't carefully and properly converted. Until the Astro Spectras caught on, the X9000's were king, and as I said were possibly the best radios ever made.
    Last edited by Alpha; Jan 10, 2013 at 01:01 AM.