Trx 1

[Windfarmer]

Hi all ! we have Motorola cm200d Two way radios VHF and when I pick up the frequency with a whistler TRX 1 there is just white noise ;am I doing something wrong or is the TRX 1 not capable of picking up that traffic ?

 

[ScannerSK]

Is the modulation set to FM? If it is set to WFM or AM you might just hear white noise.

 

[Windfarmer]

The mode is set to Auto and squelch set to Search .

 

[ScannerSK]

Are you certain of the frequency? If you are too close to the transmitter it may be overwhelming the receiver in the scanner.

 

[Windfarmer]

Yes , we are digital and on color code 1 ,would that have anything to do with it it ?

 

[ScannerSK]

Digital vs. analog could definitely explain the issue. Depending upon the type of digital modulation being used it may sound just like white noise if the scanner cannot decode it.

You may want to check that "DG Mode" is set to Auto.

 

[Windfarmer]

DG Mode is also set to Auto . so maybe the Whistler TRX1 can not decode it

 

[ScannerSK]

The FCC license may reveal more about the type of digital modulation being used and whether the TRX1 is capable of decoding it.

FCC search page:

Security Violation Logged

 

[Windfarmer]

Ok I will have to do more research then .

 

[ScannerSK]

Ok I will have to do more research then .

Here are some good details regarding the FCC Emission Designator once you locate the license.

Emission Designator - The RadioReference Wiki

wiki.radioreference.com

 

[Windfarmer]

Its a little over my head .

 

[Whiskey3JMC]

Is what you're trying to listen to listed in the datatase & if so could you please provide the DB link?

 

[ScannerSK]

Its a little over my head .

If you provide the frequency and city/state you are located in we may be able to assist.

 

[Windfarmer]

Can i reply privately

 

[ScannerSK]

Can i reply privately

Yes, you can send me a private message. Just click on ScannerSK on the left and "start conversation" to send a private message.

 

[ScannerSK]

The two emission designators on the FCC license are 11K2F3E and 7K60FXE.

The second one (7K60FXE) lists to "2-slot DMR (Motorola MOTOTRBO) TDMA voice" on the Wiki emission designator reference page.

The Wiki on the TRX-1 states it can decode MOTOTRBO signals however not trunktrack these signals.

TRX-1 - The RadioReference Wiki

wiki.radioreference.com

On the above Wiki page it states the following:
"NOTE: GRE / RS / Whistler scanners will not trunk track this mode; they will decode the mode, show TG and slot information"
"Note that Whistler scanners cannot trunktrack MOTOTRBO systems. Whistler never bought the licenses, which is why the upgrades are free. The best these scanners can do is to decode the audio. This may be sufficient on systems that aren't too busy, but for busier systems, this is a serious limitation."

I would download the upgrade to decode DMR signals if you have not already done so. It appears to be free. This is about the best I can ascertain. Possibly another member can offer more assistance from here on how to program the SDS100 to receive MOTOTRBO signals.

 

[tvengr]

I would download the upgrade to decode DMR signals if you have not already done so.

The TRX-1 can receive DMR out of the box. There is no upgrade required. It cannot trunk track DMR trunked systems but will still decode unencrypted DMR transmissions.

 

[Remon]

If you set the mode to "auto" it can only receive analog and P25. For DMR you have to program it as DMR.

Exception here is the "tune mode", which can receive all supported modes.

 

[Windfarmer]

If you set the mode to "auto" it can only receive analog and P25. For DMR you have to program it as DMR.

Exception here is the "tune mode", which can receive all supported modes.

OK that is where I messed up ,it was on auto ,I will switch it over to DMR

 

[Windfarmer]

OK that is where I messed up ,it was on auto ,I will switch it over to DMR

Would I leave the color code and time slot setting on "Any" though IF I am not sure on color code ?