DSDPlus DSDPlus Setup

[saioke]

If your going to do any play back thru Trunking Recorder or Rdio Scanner,

View attachment 194227View attachment 194228

In my case, I have to disable "add talkgroup aliases" and "Add Radio aliases" both in order for rdio-scanner to import calls. That is, without using Trunking Recorder. With Trunking recorder, it will import regardless.

 

[krokus]

I am trying to get DSDPlus to monitor DMR signals, via an RTL-SDR. Trying to sort out which instructions fit the current release is interesting. Same for the interplay between the various files.

Currently I am getting this message:
FMPx link error = -5

I have not seen an explanation of errors, to try sorting out what I have misconfigured.

 

[mtindor]

I am trying to get DSDPlus to monitor DMR signals, via an RTL-SDR. Trying to sort out which instructions fit the current release is interesting. Same for the interplay between the various files.

Currently I am getting this message:
FMPx link error = -5

I have not seen an explanation of errors, to try sorting out what I have misconfigured.

If you are running DSDPlus Fast Lane or the latest DSDPlus Public Release from the website:

a. run FMP24-CC.bat
b. then run 1R.bat

 

[krokus]

If you are running DSDPlus Fast Lane or the latest DSDPlus Public Release from the website:

a. run FMP24-CC.bat
b. then run 1R.bat

Ok, that explains a few issues, especially setting of frequency.

For some reason my system thinks that SDR #1 is in use, and mine is #2. That should be an easy fix.

 

[mtindor]

Ok, that explains a few issues, especially setting of frequency.

For some reason my system thinks that SDR #1 is in use, and mine is #2. That hould be an easy fix.

You can probably change that in FMP24-CC.bat

1. comment out "FMP24 -rc -i1 -o20001 -P0.0 -f935.0"

REM FMP24 -rc -i1 -o20001 -P0.0 -f935.0

2. add:

FMP24 -rc -i2 -o20001 -P0.0 -f935.0

The -i2 will make it use dongle 2, although it should have automatically used it.

-P0.0 is PPM adjustment, if needed

-f935.0 is setting the frequency by default to 935 mhz

 

[DaveNF2G]

You can use -i0 to have FMP24 use the next available dongle. Then you don't have to remember which is which. This is especially useful in a setup like mine, where the computer has access to 8 dongles.

 

[krokus]

You can probably change that in FMP24-CC.bat

1. comment out "FMP24 -rc -i1 -o20001 -P0.0 -f935.0"

REM FMP24 -rc -i1 -o20001 -P0.0 -f935.0

2. add:

FMP24 -rc -i2 -o20001 -P0.0 -f935.0

The -i2 will make it use dongle 2, although it should have automatically used it.

-P0.0 is PPM adjustment, if needed

-f935.0 is setting the frequency by default to 935 mhz

I created a new batch file, with another name. I changed the frequency & device pointer. Now to start messing with the offset, as it appears to be low by about 110 kHz. Starting 1.1 PPM correction.

 

[mtindor]

I created a new batch file, with another name. I changed the frequency & device pointer. Now to start messing with the offset, as it appears to be low by about 110 kHz. Starting 1.1 PPM correction.

Ok. you may want to do what Dave suggested above.

As far as PPM, 110 hz is not bad. You may not get it much closer by adjusting PPM. I'm sure you can get it closer, but don't necessarily expect 0. There is no way to adjust it down in great detail unless you just happen to be lucky.

 

[krokus]

Ok. you may want to do what Dave suggested above.

As far as PPM, 110 hz is not bad. You may not get it much closer by adjusting PPM. I'm sure you can get it closer, but don't necessarily expect 0. There is no way to adjust it down in great detail unless you just happen to be lucky.

Not looking for perfection, just to be in the window for functionality.

Got a new correction entered. Going to let this sit for awhile.

 

[gary123]

IMO any PPM error less than 200 is fine. The only time a 200hz error may have an effect is if the signal is weak or has lots of noise.

 

[krokus]

IMO any PPM error less than 200 is fine. The only time a 200hz error may have an effect is if the signal is weak or has lots of noise.

This is 110 kHz, so not showing near the line indicating the intended frequency.

 

[mtindor]

This is 110 kHz, so not showing near the line indicating the intended frequency.

110 Hz off would look pretty much dead on frequency for the frequency you have typed in

 

[krokus]

110 Hz off would look pretty much dead on frequency for the frequency you have typed in

KiloHertz, not Hertz. The frequency I'm monitoring as a test is 424.2125, and the signal is popping up on the spectrum display as 424.3xxx.

 

[mtindor]

KiloHertz, not Hertz. The frequency I'm monitoring as a test is 424.2125, and the signal is popping up on the spectrum display as 424.3xxx.

The dongle would not have 110 khz off of true. Sounds like you entered in manual PPM settings but do not know how to properly correlate the PPM correction in the FMP24 window with the -P option on the commandline for FMP24

 

[mtindor]

KiloHertz, not Hertz. The frequency I'm monitoring as a test is 424.2125, and the signal is popping up on the spectrum display as 424.3xxx.

You should consider settings -P0.0 back in the batch file and starting from scratch. You can then tune to a frequency. If it's off, you can use p/P to adjust correction until its dead nuts on (or close to it) and it will give you the correction factor to set for -P

If it's a plus value you'd have -P#.#
if it's a minus value you'd have -P-#.#

Mike

 

[RMason]

@krokus
Something is amiss. Please show us a screenshot which shows the 110kHz offset. It sounds like something may be being misinterpreted.

 

[dave3825]

I created a new batch file, with another name.

Now to start messing with the offset, as it appears to be low by about 110 kHz. Starting

Please post the contents of the new batch file

Just curious, why after people told you to change i1 to either i2 (dongle 2) or i0 (first available dongle), why did you not just use that batch file? I mean why did you create a different batch file?

 

[gary123]

For the frequency to be off 110Khz I am thinking the frequency is not what you think it is. Either that or the SDR has a problem. You can try by testing it on another known active frequency and see if it tunes to that one properly.

 

[krokus]

@krokus
Something is amiss. Please show us a screenshot which shows the 110kHz offset. It sounds like something may be being misinterpreted.

When I am home long enough, I will do that.

 

[krokus]

Please post the contents of the new batch file

Just curious, why after people told you to change i1 to either i2 (dongle 2) or i0 (first available dongle), why did you not just use that batch file? I mean why did you create a different batch file?

i1 was showing as in use, there was no i0 shown, and the system had automatically detected/configured to use i2. Setting i2 in the batch file saves a little time.

I created a new set of batch files, so I can get the system working while monitoring the local DMR ham repeater, then have another batch file set for monitoring a local non-ham MotoTRBO site. (I am wanting to map the layout of the site, for the TGs used, and which time slot they are used on.)