DSDPlus DSD+ FL and TIII networks which reuse frequencies

[scottjpalmer]

Hi

Here in New Zealand we have 2 national TIII networks which reuse CC frequencies on geographically diverse sites with the site ids allocated in numerical order from north to south.

As you can see in the attached screenshots, DSD+ FL initially identifies the site correctly (19.6 and 18.3 in the examples) but then selects the incorrect site name based on the first matching frequency it finds in the frequencies file (2.2 and 14.3 in the examples) rather than matching the site id to select the correct site to display as. It then goes on to display the correct site name in the neighbouring sites list, presumably based on a site id lookup.

Has anyone found a workaround for this other than changing the order of the sites in the frequencies file to suit the region you are currently in?

Thanks for your help.

 

[slicerwizard]

I would try this. It says its mainly for Cap+, but might work for TIII:


DSD+ 2.324

...

Added DMR system disambiguation via DCC support in the DSDPlus.frequencies file.

This feature is primarily designed for Cap+ systems where sites share common frequencies.
DCC values can be appended to DMR channel entries in the DSDPlus.frequencies file.

Example:

Cap+, 1234, 3, 1, 454.7625, 0.0, 0, 12

Cap+, 1234, 7, 1, 454.7625, 0.0, 0, 14


If FMPx is manually tuned to 454.7625 and DSD+ detects a Cap+ datastream,
DSD+ will use the received digital color code to determine whether site 3
or site 7 is being monitored.

A DCC does not need to be added to a DMR frequency entry unless disambiguation is required.

You should edit the comment at the top of the DSDPlus.frequencies file
to reflect the new optional DCC field:

Old: ; protocol, network ID, site number, ... sort order

New: ; protocol, network ID, site number, ... sort order [, DCC]

 

[hrh17]

Problem is this NZ system and all its sites have the same colour code of 0

 

[Reconrider]

I’m not great with trbo systems and dsd, but it seems like the system is acting like p25 simulcast

 

[hrh17]

disregard,

 

[scottjpalmer]

Whilst I want to do some more testing to be sure, it appears DSD+ 2.390 which includes "Better handling of DSDPlus.frequencies file data where multiple sites in a network use the same radio frequencies." has fixed this issue.

Thanks team, very much appreciated, I hope you see this.