Brant County FD

[jasoyeom]

I'm using DSD+ (on Windows) to decode Brant County FD. I'm using an sdr so I'm getting unfiltered audio to dsd+.

I'm looking for some help tweaking my settings to get a better decode. So far I've been using the -fa function to get the proper decode protocol.

It sounds like I'm getting close to a good decode. Here is the link to the audio file. https://drive.google.com/file/d/0B-6q2Uju4exqbFVkMDI3SU82Rzg/edit?usp=sharing


Here is some of the log file:

Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:112
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:21
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:227r
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:121
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:11
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:5r7r4r3
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:17r
Sync:-NXDN96 CB DATA
Sync: no sync
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB DATA
Sync: no sync
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:6r
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:216e
Sync: no sync
Sync:-NXDN96 CB DATA
Sync: no sync
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:6r6r6r5m
Sync:-NXDN96 CB VOICE e:12
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:16e2
Sync:-NXDN96 TB DATA
Sync: no sync
Sync:-NXDN96 CB DATA
Sync: no sync
Sync:-NXDN96 CB VOICE e:6e6r6r6r
Sync: no sync
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:132
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:111
Sync: no sync
Sync:-NXDN96 CB DATA
Sync: no sync
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB DATA
Sync: no sync
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:25r22
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:4r35r6r
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:323
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:15r5r6r
Sync: no sync
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:33
Sync: no sync
Sync:-NXDN96 TS DATA
Sync: no sync
Sync:-NXDN96 CS DATA
Sync: no sync
Sync:-NXDN96 CB DATA
Sync:-NXDN96 CB VOICE e:4r6r6r7m
Sync: no sync

 

[Forts]

Your .wav file doesn't seem to work.

 

[racingfan360]

It's NX96 traffic, so try forcing decode using -fN instead
If you can improve your rx signal/antenna setup it will help decode
You can also try running dsdtune to optimize decodes.

 

[jasoyeom]

Thanks for the info. I uploaded what was decoded by dsd+ not the raw transmission. I'll try to get a source file. It's hard when they don't broadcast much.

I've modified to -fn and I'll work on trying to get a better signal. I'm about 45 mins away from the transmitter.

Jason

 

[racingfan360]

To confirm, for NX96 you need to use -fN (uppercase N).
For NX48 you should force it to use -fn (lowercase n)

Actually I don't think your uploaded decode sounded that bad based on what I've decoded before.

Jim

 

[SCPD]

Adjusting the bandwidth can help too. If you adjust it so it's just wide enough for the signal. Like when I decode DMR, I usually use 8000 Hz bandwidth rather then 12500 Hz. Even though the channel is 12.5KHz big, it doesn't use all of it, so making the bandwidth smaller reduces the noise.
Make sure that filter audio is off also, if you're using SDR#.