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Thread: P25 trunking authentication key load on a NX-5900

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    Default P25 trunking authentication key load on a NX-5900

    Okay, I guess this is applicable to any of the NX-5000 mobiles, but anyway...

    A customer just brought me a NX-5900 mobile to authenticate on our system. They have the correct cable (KPG-115AUT, connects to the KVL4000's serial port) but I have no idea how to put the radio into authentication key load mode. There is a button press power-on procedure for the NX-5400 portable, but I only saw it performed once and don't remember what that was either. And, of course, this isn't documented in any manual that I have access to...
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    Normally I would never send anyone here over to RR to ask a question like this. If you do not get an answer here, ask on RR, kd4efm seems to know the NX-5xxx series pretty well.


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    So, we figured out that you press and hold the button next to the home key while powering on and it puts you in the service menu. Got into the authentication menu, the KVL can see the radio, all good... and then it bombs consistently with a comm error. "Unexpected communication with the radio..."

    If anyone has successfully done this I'd love to hear from them. When we did the portable it worked without a hitch once we could access the key load menu.
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    Do you have the NX-5000 P25 Function manual?
    I haven't tried doing this, but I've got the manuals on it, I'd be happy to assist if you'd like.

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    Quote Originally Posted by mmckenna View Post
    Do you have the NX-5000 P25 Function manual?
    No, all I have is the basic user manual. I also don't have KPG-D1N and have to borrow a laptop any time I work with these things. Customer was also using a multi-deck setup which created its own set of issues.
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    Quote Originally Posted by mmckenna View Post
    Do you have the NX-5000 P25 Function manual?
    I haven't tried doing this, but I've got the manuals on it, I'd be happy to assist if you'd like.
    Could you please share it? I only have DMR one.
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    Yeah, can I e-mail it to you?

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    Thanks, but why to do not use any file exchange service? 4sync, dropbox, sendspace? A lot of people will be glad to get. And it's not paid or NDA item. So, just upload and share a link. Thanks in advance!
    Everyone who loves RadioReference get into the hell. Especially whose who also love PL-259 connectors.

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    Sure, I can drop box it. I'm new here, so wasn't sure what the rules were about this sort of stuff.

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    Give this a try. Let me know if I boogered it up:

    https://www.dropbox.com/sh/2opzef1b3...8Vzi7blva?dl=0

    There are a couple of files in there that might be useful to you or others.

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    KPG-115AUT; KVL-4000 Radio Authentication Cable
    Note: Only capable for P25 Radio Authentication. Not available for Encryption Key Loading.
    For encryption loading you need the KPG-115 cable.