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Would that be 8CALL90D and VFIRE21W?
Loudoun County's new radio system
- Thread starter j2brown
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leonzo
Member
Keep all the 8Call frequencies programmed, since the switch to the new system Loudoun Fire is patching mutual aid calls with various 8Call frequencies. So you can now hear all the fireground traffic on the patched 8Call frequency. I still haven't figured out the rhyme or reason to it yet but it's an observation I have heard several times now. And yes, it was up fopr the wreck in Aldie and yes Aircare could have or should have used 8Call.
Close. It would be 8CALL90R not D. A base station cannot hear a unit calling on 8CALL90D because they monitor the repeater input while leaving the repeat function disabled unless neccesary. That way the comm centers areound the area can all monitor the channel without having the unsynchronized repeaters in different jurisdictions all key up at the same time. If they were to go direct with units on scene, they could be switched to an 8TAC at Loudoun's discretion.
Tdma
Maybe I missed this in earlier posts - but by he way my radio guys here in Fairfax have explained it to us, the system is TDMA - unless there is a radio affiliated to the system which is not capable of TDMA. At that point the system reverts back and is open.
That would make sense as to why Sheriff's office and jail show fully TDMA, not alot of mutual aide affiliate to that system. Fire on other hand probably has a foreign radio affiliated a majority of the time.
I know for a fact that the rookie's job at FS439 is to carry around their portable listening to Loudoun for calls. Just having that radio affiliated to the system would throw it out of TDMA. That would also explain why later at night the system would go into TDMA = no outside affiliated radios on the system. But once Fairfax runs a call into Loudoun - Boom - no TDMA.
Maybe I missed this in earlier posts - but by he way my radio guys here in Fairfax have explained it to us, the system is TDMA - unless there is a radio affiliated to the system which is not capable of TDMA. At that point the system reverts back and is open.
That would make sense as to why Sheriff's office and jail show fully TDMA, not alot of mutual aide affiliate to that system. Fire on other hand probably has a foreign radio affiliated a majority of the time.
I know for a fact that the rookie's job at FS439 is to carry around their portable listening to Loudoun for calls. Just having that radio affiliated to the system would throw it out of TDMA. That would also explain why later at night the system would go into TDMA = no outside affiliated radios on the system. But once Fairfax runs a call into Loudoun - Boom - no TDMA.
"Dynamic Dual Mode- Motorola’s unique Dynamic Dual Mode feature enhances interoperability between Phase 1 users and TDMA users. In real-time the system assigns a call as a P25 Phase 1 or TDMA call depending on the resources involved in the call."
After the fatality accident today, (pedestrian vs vehicle (I was told it was a dump truck)), Leesburg PD was able to be tracked. I guess someone was on their TG with an older radio. After a few mins, the dispatcher said for all units on the scene to go to TAC2. Immediately after she said that, TG 2847 was very active if holding on the CC. So, I'm pretty sure 2847 is Leesburg PD TAC2.
loudoun county radio
yea it was a dump truck a woman pulled and she step out of her car into the path of the dump. so what is going on with the radio system. can we promgram the new freq.into our scanner. can u email me and let me know how plz email is vrugemer@yahoo.com
yea it was a dump truck a woman pulled and she step out of her car into the path of the dump. so what is going on with the radio system. can we promgram the new freq.into our scanner. can u email me and let me know how plz email is vrugemer@yahoo.com
nothing new...just read through the last 11 pages and you'll have all the info you'll need on programming your scanner (note, it will need to be digital).
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Caught some occasional communications on Loudoun FD TG 6D tg#2875. (10:15pm 14Jan) May be some bits and pieces of what is on 8TAC91 (NSPAC TAC1 866.5125).
A
ACU1000
Guest
Maybe this system needs WIKI to answer some questions?
For example, do you need to update the firmware in a 396T in order to adjust the bandplan and scan the new system?
Yeah, that is a good idea. I don't have time to do it myself, plus I tried the other day to add something to the Loudoun Wiki page and I wasn't able to login so I didn't do it. (I added it here of/when someone wants to update the wiki)
Correct, my 396T, 996T and 396Xt all track the system and decode FDMA TGs without any issue. All show the active TDMA TGs but fail to decode any audio.
The attached map is from the LCSO for neighborhood watches but I think it will also correspond to the final LCSO TG assignments once all TGs are up and working.
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A
ACU1000
Guest
Well I must be doing something wrong becasue I hear nothing on my 396T with the RR db download (nor with Freqhoppings usd file) but there is plenty going on since I can hear it on the RR online feed. Suggestions?
What times are you listening most? I've noticed early in the mornings (~5 to 6AM) the Sterling and Dulles channels are active but not decoded. Around 7AM or so they seem to have legacy radios associate.
Stupid questions but I've done these: Did you make sure the TGs are not locked out? Did you program in the right system and not the old one? Is the CC locked out? Did you program it as the right type?
Loudoun CO VA
I used to be able to pick up the trunk system just fine from Frederick Co, MD, now nothing. I am doing something wrong. I have both the type II syste, freq and P25 freq scanner in a BC 996XT. Do I need to so something else. I heard the control channels on 868.9125
thanks kg4rgn
I used to be able to pick up the trunk system just fine from Frederick Co, MD, now nothing. I am doing something wrong. I have both the type II syste, freq and P25 freq scanner in a BC 996XT. Do I need to so something else. I heard the control channels on 868.9125
thanks kg4rgn
A
ACU1000
Guest
I am listening in the afternoons after work and in evenings like now.
I'm using ID SEARCH, not ID SCAN, so even if I had TGs locked out thisshould work.
I think I have programmed the right system, I downloaded the current Loudoun P25 entry from the RR DB.
I assume the CC is not locked out, the signal strength shows full and if I hit HOLD it shows 868.9125 and the screen flashes SID 0373h-0101 (but no audiable cc data is heard.)
A
ACU1000
Guest
I think I just may have figured something out... it only flashes the SID when using my rubber duck antenna! When connected to my outdoor antenna the intermod from the cell tower three blocks away seems to be causing issues and thats why I was not hearing anything.
Not sure why the cell tower is not causing an issue with FFX or MONTG when on outdoor antenna, but I just heard LCFD 6A fine when using the rubber duck.
In Lowes Island area, it used to be I couldnt hear Loudoun without an outdoor antenna!!!
I used to hear it in Berkeley Co. WV but not with the new one. I think they have it setup a little different.
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