SDS100/SDS200: P25 simulcast distortion

[jman54]

For the SDS100, is there any Global Filter setting that will help with some of the P25 simulcast distortion? Thanks in advance.

 

[jtwalker]

You really should not be having simulcast distortion with an SDS100, but you may have RF interference. Filter settings may help with RF interference. Only way to know is to try them.

 

[dave3825]

Everyones settings will be different based on the factors they are dealing with. Best to just play around. Search the Uniden forums, someone did a pretty extensive write up on all the filters.

What system and how is your signal?

 

[jman54]

MTA MRRS P25. 4 bars...

 

[seagravebuff60]

MTA MRRS P25. 4 bars...

I'd say 4 Bars is a pretty good signal for MRRS.

Is the audio choppy, or is it just the signal strength?
What site are you monitoring?
What kind of antenna are you using?

 

[jman54]

Audio is distorted. MRRS MTA Ardsley, Dobbs Ferry. Other towns not so bad, Eastchester is OK. Remtronix 842B. After I tried other Global filter settings which didn't seem to make a difference and went back to normal, audio started clipping at the end for all transmissions. Had to reset user setting to clear that out.

Thanks

 

[jman54]

My mistake. The clipping was the type of priority i was using.

 

[Rawkee1]

I have a bit of distortion on my SDS 200. I've tried going threw the different filters. I am using a vhf uhf antenna on the roof. I have 4 bars strength, but I;m thinking of putting a dedicated 8-900 mhz antenna. There is a lot of simulcast here. Some transmissions are clear and some a little distorted. I thought the SDS200 was supposed to react much better under these conditions than my Unitedb996P2. I'm a little disappointed after buying the SDS200. Maybe I'm overlooking something.....

 

[dmfalk]

Check modulation type? If it's set to NFM, change to FM.

 

[dave3825]

I've tried going threw the different filters.

I thought the SDS200 was supposed to react much better under these conditions than my Unitedb996P2.

Have you tried using no filters by chance?

 

[Whiskey3JMC]

Audio is distorted. MRRS MTA Ardsley, Dobbs Ferry. Other towns not so bad, Eastchester is OK. Remtronix 842B.

By "distorted" do you mean over-modulated audio? If some towns sound better than others then the audio issue may be on the subscriber end, very little you as a scanner user can do to compensate for it. Perhaps try setting a negative volume offset on each affected talkgroup?

 

[Rawkee1]

It sounds like a crackly speaker at times. Other times it's clear. It's not consistent at all. The same cruiser can call in for a car stop and sound clear, and when he calls in to the dispatcher to clear him, he can be distorted. I'm getting full bars for signal strength.