What is OP25 software?

OP25 is a Linux based P25 digital voice decoder which works with RTL-SDR dongles. It is capable of decoding both Phase 1 and Phase 2 systems. Installation is fairly simple via an installation script, but it does take some time to install.

Can you listen to P25 Phase 2?

The frequencies can easily be received with an RTL-SDR, but a decoder is required to be able to actually listen to the voice. Software like SDRTrunk and DSDPlus can decode P25 Phase 1, but at the moment the only software that is capable of decoding P25 Phase 1 AND 2 is a program called OP25.

What is the P25 radio system?

P25 Standard P25, or Project 25, is a suite of standards developed to provide digital voice and data communication systems suited to public safety and first responders. Project 25 was initiated by the Association of Public Safety Communications Officials, or APCO.

What is Unitrunker?

Unitrunker is software that allows you to follow trunked voice conversations, and SDR-Console V2 is a general purpose receiver, similar to other software such as SDR#.

Can DMR listen to P25?

Is DMR compatible with P25 technology/systems? No. The P25 protocol was adopted for public safety sector use and currently uses 12.5 KHz FDMA technology.

Can I listen to DMR with SDR?

No external dependencies, no settings, uses SDR # audio path. Designed for listening to unencrypted DMR channels. The voice from both slots is mixed into one channel. To install the plugin simply copy the dll’s from the zip file into the SDR# folder, then copy the line from the magline.

How do I listen to trunked radio with SDR?

With two RTL-SDR dongles you can set up a trunking receiver station with just Unitrunker….For the RTL-SDR this should be within about 2.56 MHz of bandwidth.

1. Press the ‘Add new receiver’ button and then on the bar that pops up click on the RTL2832 button.
2. Under “RTL Device” select your dongle.