State of Tennessee Troopnet Discussion

[milf]

Looks like they are getting the TVRTRS tie-ins with the 700 MHz sites then go west with VHF? Anyone heard on finalization of planning with the Memphis region? Last I heard they were going to do an TVTRS type thing for that area also.

[jimg]

Originally Posted by Thunderbolt

FCC license modification request for temporary command post communications.

73's

Ron

As shown on the application, what does FB2T and FBT mean? What is the difference?

[milf]

T means temporary, usually a trailer towed system. Site On Wheels etc...
FB2T = Repeater, Temporary. FBT = Base Station, Temporary.

Every massive regional, or statewide system has mobile sites (SOW's).

[jimg]

Originally Posted by milf

T means temporary, usually a trailer towed system. Site On Wheels etc...
FB2T = Repeater, Temporary. FBT = Base Station, Temporary.

Every massive regional, or statewide system has mobile sites (SOW's).

Thanks for explaining, because I had thought that the "T" designation might have been for TDMA.

[milf]

No problem. The TDMA designation would be found in the EMISSIONS designator...
For example: 7K60FXD, 7K60FXE would designate MotoTRBO TDMA Digital.

[jfhtm350]

Emission Designator - The RadioReference Wiki

[jimg]

Originally Posted by milf

No problem. The TDMA designation would be found in the EMISSIONS designator...
For example: 7K60FXD, 7K60FXE would designate MotoTRBO TDMA Digital.

A couple of days ago, the trunking symbol, "T", began appearing on both my PSR-500 and PSR-800 when scanning the "Troopnet" scanlists that I had programmed into both scanners. I assume this means they are receiving some kind of trunking signal, but no voice or any noise has been received on either scanner. Any ideas what this may mean?

[n4yek]

"T" appears when the scanner is receiving a trunking control channel data according to this: Easier to Read Pro-106/197/PSR500/600 Digital Scanner Manual

[jimg]

Originally Posted by n4yek

"T" appears when the scanner is receiving a trunking control channel data according to this: Easier to Read Pro-106/197/PSR500/600 Digital Scanner Manual

That's what I thought, however, as I said no voice or any sounds. I wonder if anyone else has received any data or voice transmissions on this system?

[jfhtm350]

Yes that means you are recieving a voice channel from a trunking system.

In my experience sometimes the control channel noise and the 'T" symbol and the actual control channel information will carry further than the actual voice will.

I can set my scanner on the Knox Co Pub Safety Trunking System and hook it to my laptop and decode the control channel all day long (such as getting the talkgroup id's and such), but actually being able to hear anyone well its just hit or miss. More miss than hit. It actually gets better in the fall and winter because the leaves are falling off the trees. Sometimes I can scan that system and Ill get the "T" and no voice because of the terrain blocking the signal. So that may be what is happening to you.

[jimg]

Originally Posted by jfhtm350

Yes that means you are recieving a voice channel from a trunking system.

In my experience sometimes the control channel noise and the 'T" symbol and the actual control channel information will carry further than the actual voice will.

I can set my scanner on the Knox Co Pub Safety Trunking System and hook it to my laptop and decode the control channel all day long (such as getting the talkgroup id's and such), but actually being able to hear anyone well its just hit or miss. More miss than hit. It actually gets better in the fall and winter because the leaves are falling off the trees. Sometimes I can scan that system and Ill get the "T" and no voice because of the terrain blocking the signal. So that may be what is happening to you.

Yes, I think that is what is happening on both my scanners. I will continue monitoring and see what happens. I am hopeful that since the PSR-500 is also receiving the "T" symbol that means it too will be capable of monitoring this new system, even though, as I understand it, the 500 will not decode TDMA Phase II modulation.

[rkm1215]

Jimg/All,
If you don't have tdma ( I don't) It might be helpful to mention what area you're in as well as what frequencies you catch because some of the 700mHz Troopnet licensed freqs are duplicated in other areas of the state on TVRCS. For example Sequatchie/Davidson 769.35625 and 769.30625 are Anderson county TVRCS sites so someone near Knoxville who sees a hit on that freq is picking up TVRCS whereas someone in middle TN would likely be getting Troopnet freq. Just my .02!

Sent from my Galaxy Nexus using Tapatalk 2

[n4yek]

Originally Posted by rkm1215

Jimg/All,....... Just my .02!

I always thought it was handy to know where people where located too...btw, where are you???
You don't tell people your location. I proudly live in Newport and display it for all to know.

[rkm1215]

I do need to update that. Knoxville.

[jimg]

Originally Posted by rkm1215

Jimg/All,
If you don't have tdma ( I don't) It might be helpful to mention what area you're in as well as what frequencies you catch because some of the 700mHz Troopnet licensed freqs are duplicated in other areas of the state on TVRCS. For example Sequatchie/Davidson 769.35625 and 769.30625 are Anderson county TVRCS sites so someone near Knoxville who sees a hit on that freq is picking up TVRCS whereas someone in middle TN would likely be getting Troopnet freq. Just my .02!

Sent from my Galaxy Nexus using Tapatalk 2

I didn't realize that some of the frequencies for Troopnet were duplicated in TVRCS. Yes, I do have a PSR-800 and I had it updated for TDMA Phase II before it was shipped to me from Scanner Master. As I mentioned, I am receiving the "T" symbol on both the 500 and the 800. I am located in Franklin County, TN., so if it is the new Troopnet freqs. it could be the site in Altamont, in Grundy Co., which, of course, is just a guess. Also, I have found that as I travel west, toward Murfreesboro/Nashville, the "T" disappears.

[Thunderbolt]

Yesterday, I got a report of a control channel on 771.63125 MHz. from just outside of Morrison in Warren County. This maybe the site located in Grundy County that has gone online. Can anyone confirm the site number, System ID, and WACN?

73's

Ron

[jimg]

Originally Posted by Thunderbolt

Yesterday, I got a report of a control channel on 771.63125 MHz. from just outside of Morrison in Warren County. This maybe the site located in Grundy County that has gone online. Can anyone confirm the site number, System ID, and WACN?

73's

Ron

I have that frequency programed into my PSR-800 under the Grundy Co. site. I will continue to monitor for any activity. As I stated in an earlier post, over the last week or so I have been seeing the "T" symbol on both my PSR-500 and 800, but no voice or noise.

[jimg]

The other morning, after a rain, and the temperature was cool, my PSR-800 was trying to pickup a signal from the "Troopnet" scanlist. The best I could see the frequency displayed was 795.3187, but I'm not sure as it appeared very briefly and was then gone, and that is not one of the frequencies I have programmed into the scanner. Any ideas?

[ButchGone]

That is not a legitimate frequency. GRE radios are known to pick up " image frequencies," that because of poor filtering will "repeat" a legitimate frequency many megahertz lower in the 700 band. Actual 700mhz band frequencies for public safety use will be between 769 and 775 MHz.
BG..

[jimg]

Originally Posted by ButchGone

That is not a legitimate frequency. GRE radios are known to pick up " image frequencies," that because of poor filtering will "repeat" a legitimate frequency many megahertz lower in the 700 band. Actual 700mhz band frequencies for public safety use will be between 769 and 775 MHz.
BG..

Thanks for the info!