scan_madison
Member
Someone told me I should be able to use DSD Plus to decode. Here's the signal that's just producing continuous noise.
Dropbox - Noise.mp4
Thanks for any pointers.
Dropbox - Noise.mp4
Thanks for any pointers.
Would I be able to decode this signal?
- Thread starter scan_madison
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scan_madison
Member
Sorry, the previous link didn't have audio. Here's how the audio sounds like:
Dropbox - Audio file
Dropbox - Audio file
Sounds like DMR to me. If you can send an audio recording file I can run it through DSD to make sure.
Are you hearing that in airband like your SDR's display shows in the video? I don't know of any DMR in airband, at least around here, but I could be wrong or It could be some other type of data that just sounds similar to DMR (or maybe an image?).
Are you hearing that in airband like your SDR's display shows in the video? I don't know of any DMR in airband, at least around here, but I could be wrong or It could be some other type of data that just sounds similar to DMR (or maybe an image?).
S
simpilo
Guest
Can you record it with windows recorder or Audacity and upload that ? I can download it and and run it through my DSD+ FL and see exactly what it is.
ka3jjz
Wiki Admin Emeritus
What is the frequency of this signal? It's certainly possible it's an image....
A
Analog-Surf-1963
Guest
Jet Blue Uses DMR !
Oh yes, lots of ground companies use DMR, but usually in the LMR bands (i.e. 450/460 MHz range). I don't ever recall hearing DMR in the 300 MHz range... usually it's AM with a sprinkling of P25 Military systems.
A
Analog-Surf-1963
Guest
I saw the video on my I phone so i didnt see you were up in the Mil band
until I saw it on the PC at home.
I live about 10 miles from Otis AFB AKA Joint Base Cape Cod... I get all kinds of stuff on the Mil Air band - Lots of Coast Guard and Air Force Activity there
So look around are there near any military installations or towers - We have an Old Gwen tower in Acushnet MA that is used for some Air Force/Coast guard GPS Booster station some how it corrects military GPS drift... possibly other things...
You found something ... Part of the hobby
Pete N1EXA
scan_madison
Member
Sorry for not responding. I am still trying to find a way to record the audio. WIll post soon. Thanks for the responses so far.
ecps92
Member
USCG to discontinue the DGPS - Acushnet will go silent
NDGPS General Information
DGPS SITE LOCATIONS
NDGPS General Information
DGPS SITE LOCATIONS
Use a virtual audio capable, and route the signal to Audacity.
Sent using Tapatalk
A
Analog-Surf-1963
Guest
scan_madison
Member
Well, that is 100% DMR for sure. However, I tried playing back the file and running it through DSD, but I couldn't get it to lock onto the signal. It sometimes will decode audio files, but not always for some reason or another.
slicerwizard
Member
It's an idle DMR base station. Getting 100% clean decode from DSD+.
scan_madison
Member
Does that mean you were able to extract audio using DSD+? Thanks.
EarHoles
Member
Not while it is Idle
slicerwizard
Member
An idle DMR channel has no voice traffic to extract.
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