LRRP P25-2

[Richard Zimmerman]

I am scanning a Motorola P25 system. and underneath the data packets. If I turn my event loging one under call events. it gives me the coordinates. of lat and lon. But it is not plotting it on the map.  Do you want that? Log file to see the format of how it is formatted to make it plot?

[Richard Zimmerman]

[Richard Zimmerman]

On further research, it looks like the location. If I have it correct it's under one of the data channels under Icmp Packet. If the radio is not encrypted, it will show up in. the string with the word point in front of it. Is there a way we could export it in the log file?  Or maybe there is a button to turn logging on for the data packets.

[sdrtrunk]

The LRRP logs and screenshots that you posted don't have any location data that I can see.  I see the system requesting that the radio transmits its location, but not the response from the radio.

Normally, Motorola P25 systems don't rebroadcast the radio GPS location reports on the repeater channel.

[Richard Zimmerman]

Here's the log file with the locations in it. 

[sdrtrunk]

Ah, I see now.  The original LRRP packet that the radio sent the LRRP server was rejected as destination unreachable and this is the ICMP rejection packet that is carrying the originally transmitted LRRP location.

I might be able to do something with that.

[Richard Zimmerman]

Is there a way to monitor the original LRRP packet that are sent to the server. So we can see the radio's locations. Or is that hard to decode?  
   Also included is another ICMP packet that I copied from the events tab. From the user interface.

[sdrtrunk]

Set the channel up using the repeater input frequency and then you'll have to be close enough to the mobiles to catch/decode their transmissions.