PDW - An SDR Decoder For ACARS & POCSAG Pagers
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- Опубліковано 27 сер 2024
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#TechMinds #SDR #HamRadio
Always great to watch your video's. What I find nice is that you talk in a relaxed way so it is really easy to understand your English. Have watched several US video's where it feels like the presenter is trying to catch the last train..
Thank you for watching 🙏
I’ve decoded pocsag messages - amount of personal data is unbelievable. How hospitals are not getting hauled over gdpr coals on this i dont know.
That's like hacking their computers and claiming the same.
How is this like hacking computers? There is no security here that you are circumventing. Claiming hacking in this situation is like walking through the town square nude and then claiming people are peeping Toms.
@@PSUdaemon my similar response was deleted for some reason.
@@PSUdaemon Hacking definition: The gaining of unauthorized access to data in a system or computer. You are assuming that as there is no security as such it makes it less of an offence. Your local taxi company may use DMR radio and give out address and name details to drivers, however, just because a 50 quid radio can pick it up does not make it a GDPR issue. The law is quite clear on radio interception and protects them from any breach.
Listening to any non commercial or amateur band broadcast is strictly illegal in the UK. The law is not often enforced but where information is intercepted and acted upon, then really bad things start happening. Witness the penalties, fines, and compensation being handed out for the newspaper phone hacking stories. If someone just listens covertly and never reveals the contents of what is overheard, then there is little the authorities can do because nobody will ever know. In some countries the mere possession of equipment capable of receiving these signals is a serious criminal offence which will result in a long term of imprisonment without appeal. SDR dongles are available everywhere, but connecting them up to a computer rather than a TV kind of gives the game away, especially if the computer is seized for examination. Just something to be aware of when travelling.
Pagers are still very much used in Australia as well, the biggest are Medical and emergency services.
We do have a few networks still active outside of the above 2, but they mainly just transit alarms and dat, with the odd personal message here and there
why am i not surprised, australia basically sucks i think we all know that.
Really? I thought the city wide transmitters were decommissioned?
nope, SA, Vic, NSW and parts of QLD, still use pagers
I'm using an SDR dongle setup in SDR# and VoiceMeeter to send the audio to PDW. That way I can use VoiceMeeter to listen to the audio or shut it off but still have it go to PDW. This is all on a PC.
I found in my case the audio from your device can be hit or miss especially for like Pocsag/Flex and unless you have a very strong signal it usually misses. The more tried and true way is to tap into the correct IF stage in your radio and with an interface (available) plug that into your computer com port. This method has given me 100% results. Again audio only maybe fine but maybe only if receiving strong signals, just my experience.
ambulance and firebrigade can easily be received in the Netherlands with PDW pocsag since the introduction of C2000 communication system for helpers.
in 2005. There are a lot of transponders spread over our country.
When someone tells me not to look (decode)
well I just have to have a look !
hahaha.. i looked as well..! :-)
Also works GREAT With AUDIO Output From SCANNER Radio...
Here the most Messages are with encryption. 466.075 MHZ
Pocsag TX is possible with HackRF or Raspberry Pi (RPITX)
There are still zombie POCSAG transmitters in my area. They put out regular idle messages, but I know for a fact that none of the staff carry pagers
I find OpenEar SDR to be well better ..you dont have to mess around with audio levels if you plug and old dongle into windows. Its a slightly more sensitive decoder as well .
I've noticed that the emergency services can get a rough location from a cell phone, even when the caller does not give one. Looks like: "Mobile Phone Coordinates, Closest Area Detected.."
Plenty of POCSAG and FLEX in IO90BS - like as others have said, some messages are interesting, but alot is quite upsetting (medical).
You're very lucky to have POCSAG at 153Mhz. I was rudely introduced to my 5 local POCSAG transmitters when I installed an outdoor antenna. Here they broadcast between 148.5Mhz and 148.9Mhz, nice and close to the 2m band.
I can remember when I first started on Ham Radio that 2M used to suffer quite a lot with pager bleed over.
To be honest some folks do suffer even at 153. This is why sotabeams sell a bandpass filter. They also bleed into 137 for those of us doing weather satellites. There’s even now a signal actually in the band too, which is worse! It’s so wide and blasts everything on the sides
@@MarkPentler I'm actually using a half of a 6 cavity duplexer from eBay as a low pass. Couldn't find anything else that was _sharp_ enough to keep much of the top of the 2m band. Seems to work well (according to NanoVNA anyway).
i set up the software, but I cant find any signals to decode. I am in Richmond, Virginia
My Marconi 2995R has built in POCSAG Transmit and Receive and my "R" version of the Marconi 2995 has an off air receiver. I have not dared to try and decode any POCSAG data, a friend has done it and was sickened by the nature of the pager messages. They can be EXTREMELY disturbing, especially if it is related to do with anything medical or an organ donor service.
@@MevRB19 What on earth is all this "Woke" nonsense. It might be used for that where you live, but here it is quite disturbing and not something you would want to read. There is no need to be rude or offensive if someone is disturbed by anything like that.
Pocsag is not as popular as it used to be, the software worked well for me many years ago using discriminator output from a ham rig. Apart from the emergency services and railway traffic pagers were popular amongst "twitchers" who would send a lot of group messages.
Still a lot of bird watchers (twitchers) using the pager networks in the UK - they are using FLEX and not POCSAG though.
Still LOTS To Receive on PDW,Hospitals,Rescue,Industrial,etc
I have never been able to get PDW to work.
Pete Boston whas the main developer for PD for DOS, Jason Patty ported into windows and made it PDW
Used PDW for YEARS,POCSAG Mostly...
If you own a pocsag pager, can you get these messages decoded on the pager directly without using this method?
can't pick up any messages for pocsag pdw i have followed all the steps and are getting a pocsag signal in sdr sharp but the signal meter in pdw is not moving and no messages are comming through in the pdw in the interface setup in the serial port section the port box is blank and not showing com1 like in the video might that have something to do with it
If you open up the volume control panel on windows, do you see any green bars moving on Virtual Audio Cable? If not, then that could possible be the issue.
If somebodies electromagnetic radiation is going through my person and property, I can do with it whatever I damn well please.
I need to try and get PDW working again. I recently bought a RSPdx to replace my RTL SDR blog radio and I'm still not fully used to the software yet
arent the message already public since anyone can decode them? like its no diffrent then posting them on some obscure form
So as of lately PDW stopped working for me. That is, I choose the VB audio, send the output of SDR# to that VB but apparantly PDW doesn't show that a signal is received.
I read somewhere that the problem started with Windows 10 (I am running W11) but am curious if there is a solution for that problem
I can hear a POCSAG signal on my RTL-SDR device but since I'm using it on my phone with SDR Touch there is no way to accurately get it to my computer. The headphone output on android phones is too low and the SDR works poorly on my computer for some reason.
There is also software called multimon-ng which can decode POCSAG for sure, ACARS I'm not sure.
can you make a video on using the Ublox c94 m8p GNSS receivers and converting the ubx file to rinex files using rtk lib please?
Has Posag been scrambled? I can receive text but nothing that can be read.
Weird. If it's so bloody private then don't broadcast it.
Is there any software to take the map coordination from messages and plot onto a map?
How can I use this with Linux? I need to be able to decode POCSAG to a text file for further manipulation. Using a pi3 or even less is all I need.
Very well presented and detailed video , I can receive pager messages on 153.350 (POCSAG) and 153.025 (Flex) it is the Page network here in the UK I think. Also if it is possible you should focus another video on using multimon-ng it is a powerful commandline decoder you can use on Linux, even a Rapsberry pi can handle it!. 73's Danielle 26DC260
Cheers Danielle! I will take a look 🙏
Hi Danielle,
Thank you for posting your very interesting comments.
I hope you don't mind me asking but I gave up trying to install Multimon-NG on my raspberry pi.
Do you know of a prebuilt image that I could buy to save me all the hassle?
I normally run PSW but ideally would prefer to use the Pi.
Kind regards,
Steve
@@stevew267 Hi, what errors do you receive whilst trying to install multimon-ng, if you tell me the error message I think I could try to help you fix it, if not I can upload a fresh image for your pi. Regards Danielle
@@pmr446 Good morning Danielle and thank you very much for responding so promptly.
As it is quite some time since I eventually gave up I really cannot remember exactly why it didn't work for me. I know that at the time, spending hour after hour I eventually lost interest and not being familiar with Linux added to the problem.
Since I haven't powered up the Pi for over a year I would need to re-familiarise myself before trying again. This is where I ask that you upload the image if it's not going to inconvenience you too much and is so I would be most grateful.
Kind regards,
Steve
@@stevew267 Hi Steve, sorry for the late reply I have been busy. I will create an image of rasbian with multimon-ng for your pi tomorrow, whart particular model of pi do you hvae?
i have literally never been able to get a clean decode from PDW, it just never works no matter what settings are used. if you want to decode pocsag, then POC32 works great
If you want to be thoroughly depressed, decode POCSAG in the UK - it's not nice reading :(
Yup, I have to agree
ok explain??
Now I'm curious
Let’s just say, lots of medical situations..
@@wisteela It has a lot of medical/hospital messages, not very pleasant to read.
SDR Angle can decode Pagers
I bined my pagers years ago sorry I did
My pdw messages are just blank it not showing any messgaes
Sounds like it’s not decoding properly or the audio routing is incorrect.
@@TechMindsOfficial but my signal strength is only 16% and i live in urban area and i think there are no pager nearby....
great video!!
Does it works on Linux ? It failed to build, and after looking into the codes it looks like it's made for Win only ?
There should be a linux version i'm going to look at it tonight and see what i can find.
Legal shmegal
I used PDW for a long time, but it stopped working for me a few months ago. No idea why
Are you using SDR#? I found the later versions don't work. When using PDW I revert to Version 1716, and it works as before.
@@mydronevideos3513 good to know, I'll have to try that out
@@mydronevideos3513 I can't find that build anywhere
I didn't knew that'a so "easyly" possible decoting those Data Signals 🙄 73 vom HB9 Land
ACARS messages should not be compared with ADSB. ADSB is a public beacon which can be used public to locate aircraft.
ACARS instead belongs to the aircraft radio transmissions which are restricted to air personell in some countries. Unlike ADSB it can be illegal to decode ACARS messages.
It's picky. Even with great audio it still may not work right.
👍👏👏
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