Overton County SD encrypts full time

[rma0100]

The overton County SD recently encrypted full time (100%) all traffic. It's not P25 or DVP. I've never heard it before. Does anyone have any information ras to the technology? Listen to it on 155.550 Mhz. Help!

 

[n5ims]

Not sure about encryption, but they recently (12/9/2010) received a change to their license (WPPH448) that indicates that they're now licensed for standard narrow-band FM voice (11K2F3E) as well as MOTOTrbo (7K60FXD & 7K60FXE) data and voice operation. You're probably hearing them now using MOTOTrbo, which currently no scanner can directly decode.

For info on MOTOTrbo see this from the RR WIKI http://wiki.radioreference.com/index.php/MOTOTRBO

 

[wa8pyr]

Not sure about encryption, but they recently (12/9/2010) received a change to their license (WPPH448) that indicates that they're now licensed for standard narrow-band FM voice (11K2F3E) as well as MOTOTrbo (7K60FXD & 7K60FXE) data and voice operation. You're probably hearing them now using MOTOTrbo, which currently no scanner can directly decode.

Are you sure its MotoTRBO? FCC licenses don't specify what brand of digital it is, only the bandwidth, modulation and mode as follows:

7K60: Maximum 7.6kHz bandwidth
FXD: F = Frequency modulation, X = Cases not otherwise covered, D = Data transmission, telemetry, telecommand
FXE: F = Frequency modulation; X = Cases not otherwise covered; E = Telephony (including sound broadcasting)

The FCC emission designators are described at:

FCC: Wireless Services: Industrial/Business: Licensing: Emission Designators

It could be Nexedge or P25, although if it's P25 you would probably know it.

 

[radioman2001]

7K60 is Mototrbo, 6K60 is IDAS.

 

[n5ims]

Are you sure its MotoTRBO? FCC licenses don't specify what brand of digital it is, only the bandwidth, modulation and mode as follows:

7K60: Maximum 7.6kHz bandwidth
FXD: F = Frequency modulation, X = Cases not otherwise covered, D = Data transmission, telemetry, telecommand
FXE: F = Frequency modulation; X = Cases not otherwise covered; E = Telephony (including sound broadcasting)

The FCC emission designators are described at:

FCC: Wireless Services: Industrial/Business: Licensing: Emission Designators

It could be Nexedge or P25, although if it's P25 you would probably know it.

You may want to check out the Common Emission Designators from APCO AFC - Public Safety Radio Spectrum Emission Designators as well as the RR WIKI Emission Designator - The RadioReference Wiki for additional info. The FCC can't assign a specific code for a manufacturer so they can't indicate them directly. I believe that the APCO list (and possibly our WIKI list as well) came from the various equipment's type acceptance emission, it should be pretty accurate.

 

[Banger]

Does anyone know if the Digital Speech Decoder software linked on RadioReference will work with a Radio Shack PRO-197? We just bought one because we knew the Overton County SD were switching over to all-digital, but like the original poster stated, we only get noise.

Still pretty new to this digital scanner stuff, but learning.

 

[TexasCOML]

Did anyone figure this out? It is the hammer sound and I have not heard that before. I don't think it is just plain P25 so any ideas would be great.

 

[rma0100]

Not sure about encryption, but they recently (12/9/2010) received a change to their license (WPPH448) that indicates that they're now licensed for standard narrow-band FM voice (11K2F3E) as well as MOTOTrbo (7K60FXD & 7K60FXE) data and voice operation. You're probably hearing them now using MOTOTrbo, which currently no scanner can directly decode.

For info on MOTOTrbo see this from the RR WIKI MOTOTRBO - The RadioReference Wiki

It'sdefinately MOTO as I had been listening to them with a proprioataqry software system for months before they encrypted full time. From the reading that I have done the encryption key can be 40 digits long making the potential for 1 trillion keys. Consider Overtoon county gone and Putnam county just went MOTO and I expect them to encrypt full time also. This hobby, unfortunately someday will be quite limited to converntional systems non encrypted or at least temp encrypted. Putnam county is also transmitting on 460.0625 Mhz and they are lic for it. But still MOTO. MOTO being sold throughout TN
. EMS is also MOTO but not encrypted yet anyway. Also, you can hear Overton CNTY on 155.745 Mhz un encrypted most of the time. car to car. I've never heard the base on it.

Hackers have beaten P25 encryption but it's a state and federal felony to do so. It's simple brute forcce software and discussed openly on the net. All of this encryption will put the hackers to work but using it can get you 5 years in jail and a hefty fine. Remember Bill Cheek. They nade quite an example of him. Then he died of cancer. All of what I have just posted I read from the net so bare that in mind. OC never had much to say anyway.

 

[rma0100]

Moto

Does anyone know if the Digital Speech Decoder software linked on RadioReference will work with a Radio Shack PRO-197? We just bought one because we knew the Overton County SD were switching over to all-digital, but like the original poster stated, we only get noise.

Still pretty new to this digital scanner stuff, but learning.

You need DSD 1.4.1 and MBELIB 1.2.3 and then a disc tap from that radio if it can be done. Get familiar with digital as it's here to stay.