SDS100/SDS200: Just bought a SDS100 got a couple questions.

[nessnet]

AngWay: (OP)
Again, in reading all of your questions, I'd strongly recommend getting a better grasp of trunking.
Please take the time to go to the below links.

Trunked radio system - Wikipedia

How does trunking work? | Tait Radio Academy

Trunking Basics - The RadioReference Wiki

 

[AngWay]

It does NOT.

It is basically just a visual tool to see what other radio transmissions are close to the one in question - key word - ONE.
And again, this is because of the very wide front end of the SDS100/200. If another transmission is too close to the one you want to monitor, it may (will) interfere with the one you want. The waterfall visually shows you the chunk of spectrum higher and lower than the center freq you have programmed.

There are tools in these radios to help with this, but that is a can of worms you will need to open down the road. You need to understand the basics first.

In dsdplus FL i have noticed that most DMR signals show DMR BS DCC:1

They only contain text, not like the files should be wildly massive.

You had said in earlier post that the sds100 would decode TDMA voice channnel but not a control channel does that mean u have to just programm in the voice channels and forget about the control channels?

 

[Enjoi19]

In dsdplus FL i have noticed that most DMR signals show DMR BS DCC:1

You had said in earlier post that the sds100 would decode TDMA voice channnel but not a control channel does that mean u have to just programm in the voice channels and forget about the control channels?

You’ll want to read in to or watch videos on how trunking works, per a few recommendations you’ve had here. It will the make sense.

 

[RMason]

You had said in earlier post that the sds100 would decode TDMA voice channnel but not a control channel does that mean u have to just programm in the voice channels and forget about the control channels?

Here is some insight.

P25 phase one systems use FDMA control channels and FDMA voice channels.

P25 phase two systems allow the use of TDMA voice channels. They may use either FDMA or TDMA for the control channels. Until recently, all P25 systems used FDMA control channels.

The Uniden scanners do not decode TDMA control channels on P25 systems. They only support FDMA control channels.

To trunk track a P25 system, you need to program the control channels. Programming the voice channels is ‘optional’.

 

[AngWay]

Here is some insight.

P25 phase one systems use FDMA control channels and FDMA voice channels.

P25 phase two systems allow the use of TDMA voice channels. They may use either FDMA or TDMA for the control channels. Until recently, all P25 systems used FDMA control channels.

The Uniden scanners do not decode TDMA control channels on P25 systems. They only support FDMA control channels.

To trunk track a P25 system, you need to program the control channels. Programming the voice channels is ‘optional’.

So the sds100 does not decode TDMA control channels. so that means you can't not listen to them at all? and is this the way it will all eventually be or is this just a certain type of system?

 

[AngWay]

You’ll want to read in to or watch videos on how trunking works, per a few recommendations you’ve had here. It will the make sense.

Thanks you i will

 

[Enjoi19]

So the sds100 does not decode TDMA control channels. so that means you can't not listen to them at all? and is this the way it will all eventually be or is this just a certain type of system?

You could likely scan the voice channels, but it won't trunk track properly this way.

It's only very few systems right now, if it isn't on any local to your area I wouldn't worry so much about it right now.

 

[AngWay]

You could likely scan the voice channels, but it won't trunk track properly this way.

It's only very few systems right now, if it isn't on any local to your area I wouldn't worry so much about it right now.

It is on This my area is buchanan. but i don't think it's on that one but i do listen to that system sometimes with sdrtrunk and dsdplus i thought my sds100 would pick that up apparently not. i was reading on the uniden website and it says this

• TRUNKTRACKER X
  Scans APCO 25 Phase 1 and Phase 2, X2-TDMA, Motorola, EDACS, and LTR trunked systems, as well as conventional analog and P25 digital channels.

The first part about X2-TDMA i thought that meant it would scan TDMA

 

[jtwalker]

It is on This my area is buchanan. but i don't think it's on that one but i do listen to that system sometimes with sdrtrunk and dsdplus i thought my sds100 would pick that up apparently not. i was reading on the uniden website and it says this

• TRUNKTRACKER X
  Scans APCO 25 Phase 1 and Phase 2, X2-TDMA, Motorola, EDACS, and LTR trunked systems, as well as conventional analog and P25 digital channels.

The first part about X2-TDMA i thought that meant it would scan TDMA

No, it doesn’t. X2-TDMA is older technology and I believe obsolete, or at least on its way out.

 

[AngWay]

No, it doesn’t. X2-TDMA is older technology and I believe obsolete, or at least on its way out.

oh ok so that is a different kind or older version of TDMA than the one being used today?

 

[jtwalker]

oh ok so that is a different kind or older version of TDMA than the one being used today?

Didn’t I just say that?

 

[Enjoi19]

On that system as well, sites utilizing TDMA control channels have a T beside them. None of the 3 Buchanan related sites are marked with that.

You should try putting these things in and seeing if they work, less hypothesizing.

 

[RMason]

It is on This my area is buchanan. but i don't think it's on that one but i do listen to that system sometimes with sdrtrunk and dsdplus i thought my sds100 would pick that up apparently not.

The American Electric Power (AEP) P25 system is one of the few P25 phase 2 system using a TDMA control channel on some of its sites. As noted by others, the RR database shows that the sites in VA use FDMA control channels - not TDMA. (TX, OK, LA, and AR are shown as the only states with sites with TDMA control channels).

The SDS100 should be able to handle the AEP system in Virginia.

 

[dave3825]

The upgrades for DMR and NXDN are not 90 bucks.

They are for those who do not shop around and purchase from the crooks at this place.




But at least they take interest free payments.

All my upgrades are from Uniden.

 

[WX9RLT]

They are for those who do not shop around and purchase from the crooks at this place.

View attachment 170349


But at least they take interest free payments.

All my upgrades are from Uniden.

I agree, use UNIDEN.
Straight from the source, get the keys right away.
And you pay the cheapest, on UNIDEN

myUniden - Customer Product Registration and Support Area

 

[AngWay]

It does NOT.

It is basically just a visual tool to see what other radio transmissions are close to the one in question - key word - ONE.
And again, this is because of the very wide front end of the SDS100/200. If another transmission is too close to the one you want to monitor, it may (will) interfere with the one you want. The waterfall visually shows you the chunk of spectrum higher and lower than the center freq you have programmed.

There are tools in these radios to help with this, but that is a can of worms you will need to open down the road. You need to understand the basics first.

What are those tools you talked about? i'm at the point now that i would like to try them to see if it helps some things.

 

[nessnet]

What are those tools you talked about? i'm at the point now that i would like to try them to see if it helps some things.

First - if it ain't broke, don't fix it.
What "things" are you referring to?

The tools I was referring to are used to fix problems caused by RFI.
If you don't have it - you don't need to fiddle with them.
Seriously, if everything works fine, you do NOT need these.

The tools I was referring to are filters and IFX.

Easier to Read SDS100/200 Digital Scanner Manual
There are detailed past posts detailing the best way to experiment with and find the best filter.
Search for and read all about them before you mess with them in the radio.
And.... filters are 100% location dependent - if you are mobile, they can make things worse.

IFX:
Easier to Read SDS100/200 Digital Scanner Manual