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Thread: ******** MTM5400 OOB (Out of band)

  1. #1
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    Question ******** MTM5400 OOB (Out of band)

    Hi all!

    Who have such kind of experience? I am interested in moving MTM5400 (380-430 MHz) to 431-432MHz, or what would be better, to 439MHz. But from what I know, it's not so obvious. For e.g. MTP850s shows strange behavior in this case. It might get into close DMO repeater not from the first attempt, it might lower range or reliable comms, etc. And I can suppose that problem is not only in RF filters (I fully understand that operation in this case is carried out on the slope of the RF filters, and it introduces attenuation; both RX and TX). But from my side it looks like something breaks in TETRA math, like time delay calculations. I am not 100% sure, but just suppose.

    Anyone can share their own knowledge and/or experience?

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  3. #2
    Junior Member Reputation: 10
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    Default Re: ******** MTM5400 OOB (Out of band)

    not working, up to 439mhz will become deaf.

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