Hello, I have been scanning on a scanner for a while but I would like to buy a gift for my friend, we are both fire explorers and he cannot afford a 500 dollar scanner, Can someone direct me to what software I would need to get for him to listen to a P25 Phase two system? Thanks for helping
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- Thread starter Ilikeradiostuff
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NebraskaCoder
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Windows or Linux?
Windows
NebraskaCoder
Member
You can try DSD Plus (Pay for the Fastlane option), SDRTrunk (I've never used this one), or Unitrunker. I would try DSD Plus first (DSDPlus – Digital Decoder) and pay for the Fastlane.
I would try SDR Trunk first. you will need two sdr dongles but its already compiled for you and easy to use. That's my opinion at least
Alec
N1AJW
I have a free course that will get you up and running with an SDR. The free course stops with DSD Plus Public Release, but if you take what you learn in the free course and purchase DSDPlus Fast Lane, you might be able to get started listening to your Phase 2 P25 System with a single USB dongle.
Course: The Ultimate Beginners Guide to Software Defined Radios
Course: The Ultimate Beginners Guide to Software Defined Radios
iMONITOR
Silent Key
Hi Alec! Do you know if SDR Trunk will work with SDRplay's RSPduo (dual SDR)?
Unitrunker does not decode P25 phase 2 audio.
Sorry I dont know.
One consideration I didn't know about when I got into it -- from RSPduo's site "both tuners can operate simultaneously anywhere between 1kHz and 2GHz with up to 2MHz of bandwidth per tuner"
Well. That's good and 4Mhz of bandwidth may be enough for the location of interest, but for a really busy large metro trunking system, you might need 8Mhz or more to cover all the frequencies of interest. It depends on what you are trying to do. For one of my locations on a p25 phase 1, I need a bit more than 10Mhz to be able to capture everything. So, that works out to either buying two AirSpy Mini's (8Mhz bandwidth each), or pushing at least Four RTL-SDR's (~2Mhz each) and fudging/pushing the center frequencies a bit on either end with sample rates -- and I might miss a high and low end frequency or two resulting in missed conversations from time to time (five would be better).
Granted, I'm not just listening live, I'm recording for later review with trunk-recorder, and playing back with either rdio-scanner (live) or trunk-player (for review). You'd also be using Linux for that -- or running a Linux virtual machine on windows (VirtualBox). Setup is a bit harder, but it's more of what I wanted to do and it's easier to customize talkgroups......well, at least for me.
Well. That's good and 4Mhz of bandwidth may be enough for the location of interest, but for a really busy large metro trunking system, you might need 8Mhz or more to cover all the frequencies of interest. It depends on what you are trying to do. For one of my locations on a p25 phase 1, I need a bit more than 10Mhz to be able to capture everything. So, that works out to either buying two AirSpy Mini's (8Mhz bandwidth each), or pushing at least Four RTL-SDR's (~2Mhz each) and fudging/pushing the center frequencies a bit on either end with sample rates -- and I might miss a high and low end frequency or two resulting in missed conversations from time to time (five would be better).
Granted, I'm not just listening live, I'm recording for later review with trunk-recorder, and playing back with either rdio-scanner (live) or trunk-player (for review). You'd also be using Linux for that -- or running a Linux virtual machine on windows (VirtualBox). Setup is a bit harder, but it's more of what I wanted to do and it's easier to customize talkgroups......well, at least for me.
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AB5ID
Member
From what I've read it can be done, but it's very difficult.
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