I am trying to monitor a local school that uses DMR repeaters. I found the frequencies using the FCC license search and need help to get further. The school uses tier 2 because the radios don’t support it (Hytera HP650). I can listen to the frequencies and hear the repeater make a small digital burst every 2 seconds and long digital bursts when someone is obviously transmitting. How can I find out repeater input and output frequency and also color code and talkgroup? I know I need talkgroup info to transmit but do I need it to listen to all activity? I’m very new to DMR.
Is your problem finding the frequencies and talkgroups? Or, is your problem how to program your Baofeng DR-1801UV?
I know the frequencies. I cannot identify which two frequencies are input and output for the repeater, which is in TDMA mode. I also cannot tell what the talkgroups, color codes, and time slots are for each of the channels used by the school. Is there a way I can program the baofeng to look for these?
The call sign is WQIB499 if that helps. I’ve scanned through them all and a great majority of them uses DMR but some use analog which is probably for buses.
mmckenna
I ♥ Ø
On the UHF LMR band, the input/output frequencies are almost always separated by 5MHz. The LOWER frequency is the repeater output. The UPPER Frequency is the repeater input.
Program your radio with the lower/repeater output/FB2 frequency. Do NOT program the higher input frequency in.
Thanks for the help. Any idea on talk-groups, color code, and time slot issue?
mmckenna
I ♥ Ø
That's not reflected in FCC licenses, so it's up to you to find them, or hope someone local to you has the info.
I'm moving this thread to the Illinois forum and changing the title to better reflect your concern. If you have problems programming your radio, please start a thread in the appropriate forum focusing on that issue.
Can I use Allcall for talk group or do I just leave blank to listen
First of all, do you have a DMR scanner?
Sorry a mod changed my title. Not necessarily a scanner, but the Baofeng DR-1801UV.
If your trying to hear one of the high schools there all on DMR DT3 now and using a multitude of frequencies and six different color codes ,...I'm using a Uniden 996P2 scanner with DMR upgrade,.. Plfd South mainly uses there old frequency 461.3875 transitioned over to DMR,...
Thank you for the information. I also monitor P25 and monitor Will County’s portion of Starcom21 by putting all the site frequencies into a scan list, and the experience isn’t even bad. If I can get the color codes, do you think I can do this with the DMR trunked system or is there a lot more that’s going on? If not possible, do you have any recommendations on “affordable” scanners or radios capable of tier 3?
It depends what department is talking on what TG for CCodes , security, maintenance, busses all use separate CCs it is very complicated
So can I do each channel with their own CC and talk group and then put them on a scan list? Do I need talk group information to listen to all activity?
On my 996P2 with the DMR upgrade i just installed the frequency 461.3875 , mark it Digital and i hear the voice , on F+1 see itsays DMR, F+2 shows CCode ,… Then programmed it as a OFS with the other frequencies and it starts showing the TGs for PLFD So
Okay so what I’m doing is listening to one single frequency and I hear digital bursts in a pattern and constantly when someone is transmitting but it seems I can’t hear it on my Baofeng no matter what CC or Slot I use. I don’t care what I hear as long as I hear something, I can probably figure the rest out if I reach that point.
I was aware of that, just wasn't sure if you ALSO had a scanner available. Good luck!
What are you monitoring the P25 with?
Kenwood TK-5410. I can’t listen to only one talk group but it’s okay because it tells me what talk group someone is transmitting in, good enough for me.
