amedik
Member
Will be visiting this county shortly, and was wondering if the trucking systems are capable of being monitored? If so, does anyone have the necessary talkgroups they are willing to share?
Harrisonburg-Rockingham Co
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tglendye
Blue Ridge Mountains, Shenandoah River
It is a Pro-Voice system, so the system cannot be tracked with a scanner. The database lists conventional frequencies for the area. The main activity are fire & rescue dispatch channels for the city and county. Occasionally there will be traffic on the Interop channels from outside agencies. Basically law enforcement monitoring is dead, except for state agencies on STARS.
Rockingham County, Virginia (VA) Scanner Frequencies and Radio Frequency Reference
Harrisonburg City, Virginia (VA) Scanner Frequencies and Radio Frequency Reference
Rockingham County, Virginia (VA) Scanner Frequencies and Radio Frequency Reference
Harrisonburg City, Virginia (VA) Scanner Frequencies and Radio Frequency Reference
amedik
Member
Thanks Todd
kc4jgc
Member
FSCOTT, please read the OP & Todd's answer. Nothing has changed.
Actually I believe DSDPlus will decode Provoice and Unitrunker may trunk track it. I may be mistaken on the later though but pretty sure on the DSDPlus. (Possibly also original DSD)
DSDPlus would give you TGs as they appear. At worst couple with SDR# with its frequency scanner and put in all the voice channels then scan. It'll work that way.
I do that with the STARS sties and it does great.
DSDPlus would give you TGs as they appear. At worst couple with SDR# with its frequency scanner and put in all the voice channels then scan. It'll work that way.
I do that with the STARS sties and it does great.
Except FSCOTT is trying to use a ProVoice two-way radio to monitor a ProVoice system instead of a scanner. That means he has a chance of monitoring it. The problem is a lack of information that we scanner listeners can provide regarding a system we can't monitor. The Unitrunker/DSD idea might be worth pursuing though.
Just saw a comment in another thread which may apply. The poster said the 800/18/668/1080 tracks Provoice systems. Which means with their built in taps it would allow trunk tracking of the system coupled with DSD/DSDPlus.
Of course that is if its true. (doesn't decode just tracks apparently)
Of course that is if its true. (doesn't decode just tracks apparently)
So my homepatrol will not pick up the TRS channels?
It definitely won't decode the transmissions because they are ProVoice digital, not P25 digital. It probably won't trunk-track (follow) the transmissions as they switch from frequency to frequency either, but I couldn't confirm that.
Thank you fredva
kb4cvn
Silent Key
It has been 2008 since I have listened to Harrisonburg/Rockingham County's EDACS System, but here is the data I collected at that time.
GROUP#...ALPHA......VOICE MODE........ DESCRIPTION
=====================================================================
4161.....ECCCOMS1...PROVOICE.........................................
4162.....ECCCOMS2...PROVOICE.........................................
4163.....ECCMNTC....PROVOICE.........................................
4164.....SYSTECH1...PROVOICE.........................................
4165.....SYSTECH2...PROVOICE.........................................
4289.....ECALL......PROVOICE.........................................
4290.....SYSIOP1....PROVOICE.........................................
4291.....SYSIOP2....PROVOICE.........................................
4292.....SYSIOP3....PROVOICE.........................................
4353.....UHF IOP1...PROVOICE.........................................
4354.....UHF IOP2...PROVOICE.........................................
4355.....UHF IOP3...PROVOICE.........................................
4356.....UHF IOP4...PROVOICE.........................................
4357.....UHF IOP5...PROVOICE.........................................
4358.....UHF IOP6...PROVOICE.........................................
4359.....MED 10M....PROVOICE.......CONVENTIONAL PATCH TO 462.97500
4417.....AUG CO1....PROVOICE.......CONVENTIONAL PATCH TO 460.50000
4419.....PAGE OP1...PROVOICE.......CONVENTIONAL PATCH TO 453.70000
4421.....SHEN DRH...PROVOICE.......CONVENTIONAL PATCH TO 453.30000
4483.....8CAL90TG...PROVOICE.......CONVENTIONAL PATCH TO 8CALL90
4484.....8CAL91TG...PROVOICE.......CONVENTIONAL PATCH TO 8TAC91
4485.....8CAL92TG...PROVOICE.......CONVENTIONAL PATCH TO 8TAC92
4486.....8CAL93TG...PROVOICE.......CONVENTIONAL PATCH TO 8TAC93
8257.....HFD 1......ANALOG.........Harrisonburg Fire
8258.....FR TAC1....ANALOG...........................................
8259.....FR TAC2....PROVOICE.........................................
8260.....FR TAC3....PROVOICE.........................................
8261.....FR TAC4....PROVOICE.........................................
8262.....FR TAC5....PROVOICE.........................................
8263.....FR TAC6....PROVOICE.........................................
8264.....FR TAC7....PROVOICE.........................................
8265.....FR TAC8....PROVOICE.........................................
8266.....FR TAC9....PROVOICE.........................................
8267.....FR TAC10...PROVOICE.........................................
8268.....FR OP1.....PROVOICE.........................................
8269.....FR OP2.....PROVOICE.........................................
8270.....FR OP3.....PROVOICE.........................................
8271.....FR OP4.....PROVOICE.........................................
8272.....FR OP5.....PROVOICE.........................................
8273.....FR OP6.....PROVOICE.........................................
8274.....FR OP7.....PROVOICE.........................................
8275.....FR OP8.....PROVOICE.........................................
8276.....FR OP9.....PROVOICE.........................................
8277.....FR OP10....PROVOICE.........................................
8324.....HFD TRN1...PROVOICE.......Harrisonburg Fire Training
8387.....RFR TRN1...PROVOICE.........................................
8388.....RFR TRN2...PROVOICE.........................................
8389.....RFR TRN3...PROVOICE.........................................
8390.....RFR TRN4...PROVOICE.........................................
8392.....RFR TRN5...PROVOICE.........................................
8449.....RFR VOL1...PROVOICE.........................................
8450.....RFR VOL2...PROVOICE.........................................
8451.....RFR VOL3...PROVOICE.........................................
8452.....RFR VOL4...PROVOICE.........................................
8453.....RFR VOL5...PROVOICE.........................................
12353....RCSOTEST...PROVOICE.......Rockingham County Sheriff
12417....SO PTRL1...PROVOICE.......Rockingham County Sheriff
28993....RMH IOP1...PROVOICE.........................................
I hope this is helpful.
kb4cvn
Silent Key
FYI To the list...
Someone e-mailed me privately last night inquiring as to what type of equipment I was using to listen to ProVoice comms on Rockingham County.
Originally (pre-2004) I was using a LPE-200 portable.
I am using both P7100 and P7200 and a M7300 mobile now.
I apologize, as I should have mentioned that in the original posting.
Someone e-mailed me privately last night inquiring as to what type of equipment I was using to listen to ProVoice comms on Rockingham County.
Originally (pre-2004) I was using a LPE-200 portable.
I am using both P7100 and P7200 and a M7300 mobile now.
I apologize, as I should have mentioned that in the original posting.
cappy400
Member
Kb4cvn-- what are the control channels for the rockingham/harrisonburg edacs system? What is the exact order of them? I have a p7100 radio and i am trying to set it up correctly. Your help would be much appreciated.
kb4cvn
Silent Key
Please keep in mind that it has been several years since I had an opportunity to listen to them...
Here is what I had from that time:
SITE 1
01-851.4625
02-852.3375
03-852.6000
04-852.8625
05-853.1250
06-853.3750
07-851.5625
08-852.1125
09-852.6875
10-853.1875
11-853.9250
SITE 2
01-851.3000
02-851.8250
03-852.3750
04-852.9875
05-853.4750
SITE 3
01-852.7375
02-852.8250
03-853.6375
04-853.9750
05-852.0500
Please let me know if the freq's are still valid. Thanks.
kb4cvn
Silent Key
One other tidbit...
When I was the System Administrator of a municipal EDACS system, I would routinely rotate the control channel through ALL of the frequency pairs on the system.
Although the listening public would think this was solely an effort to thwart their listening, it wasn't.
The real reason for rotating the control channel on a routine basis is the balance the system wear-and-tear. By having the control channel on just one repeater, the finals in that repeater are running at full-power 24/7. Final transistors in any electronic device have a finite lifespan. In the case of a control channel transmitter, you are running them at full rated power, all the time.
By rotating the control channel, you are taking that same amount of usage, and spreading it across all of the repeaters in the site. And not overusing a lone repeater to the point of component failure.
Yes, it does have the effect of annoying listeners. But that isn’t the intent.
To really annoy people, you have what is called “Scrambled Data Calls” you can run on a system. This is checking the transmit data stream by transmitting about five seconds of 1’s and 0’s in a quick burst. Rotate to the next channel, and do it again. When I got the word that a major operation was going to occur (high risk entry, SWAT callout, drug task force, etc.), I would start running scrambled data calls for about a week prior, and during.
...And yes, I did get Hate Mail and "off-color comments" in the local newspaper's Editorial Page.
When I was the System Administrator of a municipal EDACS system, I would routinely rotate the control channel through ALL of the frequency pairs on the system.
Although the listening public would think this was solely an effort to thwart their listening, it wasn't.
The real reason for rotating the control channel on a routine basis is the balance the system wear-and-tear. By having the control channel on just one repeater, the finals in that repeater are running at full-power 24/7. Final transistors in any electronic device have a finite lifespan. In the case of a control channel transmitter, you are running them at full rated power, all the time.
By rotating the control channel, you are taking that same amount of usage, and spreading it across all of the repeaters in the site. And not overusing a lone repeater to the point of component failure.
Yes, it does have the effect of annoying listeners. But that isn’t the intent.
To really annoy people, you have what is called “Scrambled Data Calls” you can run on a system. This is checking the transmit data stream by transmitting about five seconds of 1’s and 0’s in a quick burst. Rotate to the next channel, and do it again. When I got the word that a major operation was going to occur (high risk entry, SWAT callout, drug task force, etc.), I would start running scrambled data calls for about a week prior, and during.
...And yes, I did get Hate Mail and "off-color comments" in the local newspaper's Editorial Page.
cappy400
Member
Thank you for the info. If the control channels are changed wouldn't all mobile radios have to be reprogrammed? If they are changed like you say then the listener would have to re-figure out the Lcn order again? I take it site 1 is valley, site 2 & 3 are feed stone and mountain. Once again thank you for your help. I will get the software version of the radio to you asap.
cappy400
Member
I understand the p7100 radio is a shot in the dark but it is the best shot I can think of at this point. This guy helping me is wanting to run the radio while turned on thru some software to figure out the Lcn order . I am pretty confident in his ability. He seems to know his stuff. If this doesn't work I get my money back. Once again thank u for your help or any help you can give me
kb4cvn
Silent Key
No. Unlike Moto radios, GE, Ericsson, etc. radios have all frequencies for each site programmed into them. In that way, if a Control Channel (CC) or alternate CC were to fail, you have 100% redundancy.
I HAVE NOT EVER seen an operational user system that had to reprogram all of the trunked frequencies in user radios to thwart listeners as its sole purpose.
I HAVE SEEN systems reprogrammed when adding additional repeaters to the system. Or, like happened several years ago with the NexTel rebanding of the 806-870 MHz spectrum.
I it not a clean or pretty process. To do it, without adversely impacting users, every radio in the system will need to be reprogrammed TWICE.
The first programming is to add the newer frequency scheme (aka: LCN) to every user radio.
When that is completed, you advise every user that on a specific day, you quit using the OLD programming and start using the NEW programming. This is done with two (or more) identical systems programed into each radio. One with the existing trunked frequency set, and the second with the new frequency set.
After everyone has moved, only then do you go back and reprogram everyone’s radio to remove the original system with the old frequency information.
Any way you look at it, it is a major pain in the butt for the technician(s). The one occasion I have had to do this on a system I maintained, I had roughly three thousand (3,000) radios to reprogram….TWICE. By myself. This was in the mid 1990’s. I spent a couple of months in the City's Motor-pool from 8 PM to 4 AM to get this effort accomplished.
God bless the person who invented Over-The-Air-Reprogramming! This can be accomplished from a computer console now.
kb4cvn
Silent Key
Back on-line...
I apologize to person(s) that have been trying to contact me by Message and e-mail. My laptop croaked last week (knocked over) and I am only now (Sunday) getting partially back to where I was before the hard-drive failed.
Klutzy big dog vs. laptop..............Laptop lost !
I apologize to person(s) that have been trying to contact me by Message and e-mail. My laptop croaked last week (knocked over) and I am only now (Sunday) getting partially back to where I was before the hard-drive failed.
Klutzy big dog vs. laptop..............Laptop lost !
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