Why aren't inputs listed in TRS database?

[b52hbuff]

There seems to be a lot of 'extra' data in the db wrt most modern trunking scanners. For example, none of my radios needs a connect tone. It seems as if this information is listed for 'completeness'.

I am wondering why we don't list the input frequencies in the TRS database? I realize that 800 & 900MHz trunking would use standard splits. But UHF & VHF are going to use non-standard splits...

Why not list these inputs in the database?

 

[mciupa]

Why not list these inputs in the database?

Would you truly be " close to the scene " for these freq's to be practical for your use ?
I guess I'm just wondering why they are important to you ?

 

[FPO703]

The inputs in the 800 MHz range are 45 MHz lower than the outputs. On 900 MHz, they are 39 MHz higher (I think)
Those are standard across the board. Unlike VHF hi-band repeaters.

 

[musicman476]

...and don't forget that some of that "extra" information-like the connect tone and the hex TG values is there for those who program professional radios.

 

[scanfan03]

UHF is also a 5 MHz split which is usually added, not subtracted for the public safety band.

 

[b52hbuff]

I am wondering why we don't list the input frequencies in the TRS database? I realize that 800 & 900MHz trunking would use standard splits. But UHF & VHF are going to use non-standard splits...

Why not list these inputs in the database?

I'm quoting myself for emphasis.

I realize that 800 & 900 MHz use standard splits...

But MILITARY UHF & VHF are going to use non-standard splits...

 

[Colin9690]

...and don't forget that some of that "extra" information-like the connect tone and the hex TG values is there for those who program professional radios.

Well people shouldn't be looking at this site to program a pro radio if they are indeed using it for legitimate purposes. They should be going to the system administrator for that info.

 

[KMA367]

UHF is also a 5 MHz split which is usually added, not subtracted for the public safety band.

Except "UHF-T" (470-512 mHz), which uses a 3 mHz split.

 

[n3ncn]

Well people shouldn't be looking at this site to program a pro radio if they are indeed using it for legitimate purposes. They should be going to the system administrator for that info.

That's right

 

[musicman476]

Well people shouldn't be looking at this site to program a pro radio if they are indeed using it for legitimate purposes. They should be going to the system administrator for that info.

Of course! I'm not talking about those who obtain system keys illegally or engage in programming that's shall we say, a little underhanded. I'm sure there are people who do, and I'm not condoning that type of activity.
This may be more true for conventional data here than for trunked stuff, but I'm sure there are people who use the RR database for legitimate programming of professional radios.
That's always been my understanding of why we put some data types in the database that don't apply to most scanners.

 

[STiMULi]

I am programming my new radio for "BearTracker Emulation"

This requires the inputs and in most cases the PL/DCS tones.

Yes the unscrupulous could use this information to interfere with legitimate operations but that is rarely the case. The SWFD (see my sig) uses in this information in their publications and it is very rare in this area that one hears of intentional interference.

With all of that being said I too would like to see inputs added (where they do not yet exist) and updated in the database.

 

[JoeyC]

I'm still trying to figure out the original question. Since we already know the inputs in the UHF 800 and 900 mHz bands are standard, pretty much all that remains is VHF. And, the VHF repeater inputs are listed in the database (when known) so I'm confused by the question.

 

[STiMULi]

The evolution of a question

In some cases there are not standards and I think that is where the question comes from. As well, if it were programmed many others would see the patterns or lack of a standard in those sitations.

More like the evolution of the answer

 

[JoeyC]

Its been my experience while perusing the database that where there is no standard deviation for inputs, they are listed.

 

[RolnCode3]

I was wondering the same thing recently. Since some of us aren't totally on top of the intricacies of the trunked systems, here are two reasons for inputs:

close call hits (what TRS are they using?)
what antenna would cover both input and output of this system (the reason I was wondering myself)

 

[blantonl]

Team,

We've never published input frequencies for trunked systems because there is no real reason IMHO to track them officially. Systems IDs and connect tones can be used to identify systems, and so we do track that information.

As someone pointed out, most trunked systems input frequencies are "standard", however for VHF/UHF systems, many of those systems will have the input frequencies added to the general system information section (typically trunker files for the VHF/UHF system)

Lindsay

 

[b52hbuff]

I'm still trying to figure out the original question. Since we already know the inputs in the UHF 800 and 900 mHz bands are standard, pretty much all that remains is VHF. And, the VHF repeater inputs are listed in the database (when known) so I'm confused by the question.

Yes, interesting to watch the discussion. My original question was out repeater inputs of Trunked Radio Systems.

Look @ this system:
http://www.radioreference.com/modules.php?name=TRSDB&sid=2447

You can figure out the repeater inputs for the 800MHz channels since they are on a standard bandplan split. But what about the VHF channels??

Look @ this system:
http://www.radioreference.com/modules.php?name=TRSDB&sid=3525

It is a 400MHz trunked system. What are the repeater inputs for this system? Is there a standard bandplan for 400MHz military trunking??

So back at the original question, this isn't about CONVENTIONAL systems.
This isn't about 800 & 900 MHz TRUNKED RADIO SYSTEMS...
It is about TRUNKED RADIO SYSTEMS in bands that have NO STANDARD BANDSPLIT.

 

[JoeyC]

So back at the original question, this isn't about CONVENTIONAL systems.
This isn't about 800 & 900 MHz TRUNKED RADIO SYSTEMS...
It is about TRUNKED RADIO SYSTEMS in bands that have NO STANDARD BANDSPLIT.

My bad, I didn't recognize that you were talking about TRUNKED systems, but I see Lindsays point (they serve little if any purpose to the monitor). In a trunked system, knowing/listening to the inputs seems to be of even less importance than knowing/listening to them in a conventional situation. IMO

 

[kingpin]

It is about TRUNKED RADIO SYSTEMS in bands that have NO STANDARD BANDSPLIT.

In VHF there aren't any set bandsplits. It's just what ever frequencies are available but the applicants do tend from my observations, try to keep all of the transmit frequencies within 2 MHz of each other. The shops around here do this to help with antenna tuning.

On UHF 450-470, there is a 5 MHz bandsplit for repeater operations.

 

[STiMULi]

I ask for them to be published only for the "BearTracker Emulation" capabilities.

Tracking the input means there is LEO or Emergency Services in the area.

That means use caution and alertness.