A couple of years ago we 'uppgraded' from MTS2000s to XTS5000s for our public safety folks. Last year we upgraded our Smartzone system to 4.1. Most of the cops don't really like the XTS. They complain that the volume is lower than the MTS. (and it's bigger,heavier) It seems that way to me too. Due to political restraints, we have not switched over to digital comms. On the few digital channels we have , the audio output is significantly higher than that of the conventional audio. Audio levels throughout the system are supposedly set in the same ballpark. There's no real problem here, just wondering if others have noticed the same situation. It is an impossible task, but we do try to keep our cops happy.
Merry Christmas to all.
XTS 5000 Audio volume Digital vs. Conventional
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For transmit audio, there is a parameter called something like "digital/analog audio balance" on the radio configuration/radio wide page.
For receive audio, the problem may lie in the spectral differences between analog audio and recovered digital audio. We found that some tinkering with the values on the "Rx Audio" tab (something like that) of radio configuration/radio wide page helped to make the Rx audio sound like the analog radios that had been previously in use. We didn't do this scientifically or take notes, so I don't remember exactly what changes we made.
For receive audio, the problem may lie in the spectral differences between analog audio and recovered digital audio. We found that some tinkering with the values on the "Rx Audio" tab (something like that) of radio configuration/radio wide page helped to make the Rx audio sound like the analog radios that had been previously in use. We didn't do this scientifically or take notes, so I don't remember exactly what changes we made.
I made some measurements on the most recent DSP versions and found that the digital audio on the 800 MHz XTS3000 is 3 dB lower than that of the 700/800 MHz XTS5000.
In other bands, UHF and VHF, they are the same. This is the result of the MIDRANGE EQUILIZATION being permantly enabled on the XTS5000 700/800 radios.
In the XTS5000 you have a lot of receiver audio gain controls for analog, digital and securenet.
I set my 700/800 MHz XTS5000 digital gain to around -29 to make the audio sound the same whether using a XTS3000 or XTS5000.
Don't touch the analog received setting as it royally screws up the de-emphasis curve.
Mike
In other bands, UHF and VHF, they are the same. This is the result of the MIDRANGE EQUILIZATION being permantly enabled on the XTS5000 700/800 radios.
In the XTS5000 you have a lot of receiver audio gain controls for analog, digital and securenet.
I set my 700/800 MHz XTS5000 digital gain to around -29 to make the audio sound the same whether using a XTS3000 or XTS5000.
Don't touch the analog received setting as it royally screws up the de-emphasis curve.
Mike