Phase 2 Harris NAS

[ThreatLevelMidnight]

Using an APX6000, can NAS any Motorola system just fine. Having trouble with scanning a Harris system though. Have finally been able to get it to land on an active channel, but no audio, and no radio IDs received. TGs in question are not encrypted, my SDS100 sitting next to the APX receives it clear as day.

 

[TheRadioGuru]

Sounds like you need to check your band plan as Harris often uses odd ones and not the "standard" Motorola P25 template. You will need to verify this with something like a real scanner or SDR dongle and software.

 

[ThreatLevelMidnight]

Messing with the band plan is what has got me this far, is the SDS100 capable of showing it?

 

[TheRadioGuru]

Yes should be able to IIRC correctly.

 

[nikronzo]

if its a 7/8 Moto system, it will use the standard Motorola Band plan, the subscriber doesn't matter. If you have successfully used an APX, the band plan will be the same in the Harris radio.
If you are not receiving audio, check your system parameters. Site NAC, RFSS ID, Site ID, and so on. Verify they have been inputted in the correct format, IE Hex or Decimal, RPM help menus will guide as to what options need to be put in Hex vs Dec

 

[AM909]

What system? RRDB now has band plan tables for some sites. Might be useful to post this in the geographic area-specific forum.

 

[ThreatLevelMidnight]

if its a 7/8 Moto system, it will use the standard Motorola Band plan, the subscriber doesn't matter. If you have successfully used an APX, the band plan will be the same in the Harris radio.
If you are not receiving audio, check your system parameters. Site NAC, RFSS ID, Site ID, and so on. Verify they have been inputted in the correct format, IE Hex or Decimal, RPM help menus will guide as to what options need to be put in Hex vs Dec

I am attempting to use a moto to monitor a Harris system. I have been successful with standard moto band plan using my Harris radio, but no go on the APX. Messing around with the band plan, I now have it like I said, its landing on channels, but no IDs or audio are coming through.

 

[ThreatLevelMidnight]

What system? RRDB now has band plan tables for some sites. Might be useful to post this in the geographic area-specific forum.

State of Georgia Atlanta P25 (Fulton County GA)

 

[ThreatLevelMidnight]

What system? RRDB now has band plan tables for some sites. Might be useful to post this in the geographic area-specific forum.

Forgot to add, unfortunately no one has uploaded a plan for this system. Its fairly new and relatively small.

 

[TJX400]

The best way to gather this information is to purchase an SDR tuner (most are less than $30). You can connect it to your computer, and run SDRTrunk. It will show you the band plan.

 

[TJX400]

Also, if you're referring to this system; it appears to manufactured by Motorola. Harris systems typically have a WACN with numbers and SYSID of 00A, Motorola systems usually have a WACN of BEE00, and alphanumeric SYSID. I still strongly advise to use an SDR to decode the CC to find the band plan. It's possible it's different because of the fact that it has to flip back and fourth between FDMA and TDMA depending on if FDMA subscribers are affiliated.

 

[ThreatLevelMidnight]

Also, if you're referring to this system; it appears to manufactured by Motorola. Harris systems typically have a WACN with numbers and SYSID of 00A, Motorola systems usually have a WACN of BEE00, and alphanumeric SYSID. I still strongly advise to use an SDR to decode the CC to find the band plan. It's possible it's different because of the fact that it has to flip back and fourth between FDMA and TDMA depending on if FDMA subscribers are affiliated.

This is the system I am referring to. State of Georgia Atlanta Trunked Radio System Trunking System, Atlanta, Georgia

I have an SDR dongle, just lacking the knowledge to properly set it up apparently.

 

[nikronzo]

again, if your APX6000 is scanning and unmuting the system, your Bandplan in the harris radio is gonna be the same!!!

 

[KevinC]

again, if your APX6000 is scanning and unmuting the system, your Bandplan in the harris radio is gonna be the same!!!

What Harris radio? He’s only mentioned an APX6000.

 

[nikronzo]

What Harris radio? He’s only mentioned an APX6000.

ugh! you are correct sir, reading too fast is how mistakes are made. My apologies

I need to stop spending so much time on the Harris forum

 

[ThreatLevelMidnight]

This is the system I am referring to. State of Georgia Atlanta Trunked Radio System Trunking System, Atlanta, Georgia

I have an SDR dongle, just lacking the knowledge to properly set it up apparently.

Update, was finally able to get my SDR working. Will grab the band plan tomorrow when I am within range of the system.

 

[ThreatLevelMidnight]

again, if your APX6000 is scanning and unmuting the system, your Bandplan in the harris radio is gonna be the same!!!

The bizarre thing is, I do have an XG-100P that monitors the system in question just fine using a standard Motorola band plan, but the APX does not. But by changing the band plan many times just guessing based off other Harris systems, I have it "half" working as described above.

 

[mikewazowski]

Have you unchecked the Validate NAC option?

 

[ThreatLevelMidnight]

Have you unchecked the Validate NAC option?

Yes I have

 

[ThreatLevelMidnight]

After successfully finding the band plan with SDRtrunk, I corrected the issue, and now have it working on the APX.

I will submit the band plan to the DB for anyone else in need of it.

Thank You everyone for your help and guidance!