powerhouse
Member
I have been learning the nuances of my new BCD396T and decided to tweak the AGC settings via the hidden "Hold/Power On menu.
However I foolishly did not write down what the factory defaults were.
According to the release notes for the latest firmware, 1.11.03
ATTENTION!
"This change allows access to some AGC parameters that might result in poor audio. The default settings of 0 have been arrived at through testing in multiple environments. The use of other settings is at your own risk. Uniden America Corp. is releasing access to these features without support."
I have version 1.11.04
It would seem to me that default settings of "0" would be the same as AGC Off.
Am I correct in this thinking ?
The tweaks I made were as follows;
Digital
P25 resp time -7
P25 ref gain +3
Analog
Resp time -3
Ref gain -2
Gain range +11
These ranges were posted by another poster to these groups who monitor the same systems I do. They may in fact be better than the defaults but I still would like to know the factory defaults should I ever want to reset them.
Would a scanner reinitialization put these settings back ?
My questions are:
Would someone be willing to check to see what the original factory settings are and post back with the correct parameters ?
Or perhaps someone made these changes and had more foresight than I and copied down the factory settings before making these changes and could post them ?
And finally, Are the changes made to these parameters only relevant if AGC is turned on ?
I'm trying to learn so please be patient.
The instructions for accessing these "hidden" settings are:
P25 AGC Settings
To access these settings:,
1. Press [HOLD] while turning on the scanner.
2. Turn on the Digital AGC option.
3. Tune to a digital channel.
4. While receiving a P25 signal, hold F then tap the scroll knob. The scanner displays the current P25 RES TIME parameter setting (see below for option details).
5. Rotate the scroll control to change the setting.
6. F+rotate the scroll to select another setting.
Parameters:
P25 RES TIME
Range: -8 to +8
This parameter determines how frequently the AGC factor updates. Decreasing this value makes AGC respond faster, but could result in “pumping.” A higher value decreases the response time.
P25 REF GAIN
Range: -5 to +5
This parameter determines the reference level that AGC attempts to adjust the volume to. If digital/analog volume is not matched, adjust this parameter.
Analog AGC Settings
To access these settings:,
1. Press [HOLD] while turning on the scanner.
2. Turn off the Digital AGC option and turn on the Analog AGC option.
3. Tune to an analog channel.
4. While receiving a signal, hold F then tap the scroll knob. The scanner displays the current ANA RES TIME parameter setting (see below for option details).
5. Rotate the scroll control to change the setting.
6. F+rotate the scroll to select another setting.
Parameters:
ANA RES TIME
Range: -8 to +8
This parameter determines how frequently the AGC factor updates. Decreasing this value makes AGC respond faster, but could result in “pumping.” A higher value decreases the response time.
ANA REF GAIN
Range: -5 to +5
This parameter determines the reference level that AGC attempts to adjust the volume to. If digital/analog volume is not matched, adjust this parameter.
ANA GN RANGE
Range: 0 to 15
This parameter controls the total dynamic range of the AGC adjustments. A larger value allows a wider variation in volume.
Thanks for any and all suggestions.
However I foolishly did not write down what the factory defaults were.
According to the release notes for the latest firmware, 1.11.03
ATTENTION!
"This change allows access to some AGC parameters that might result in poor audio. The default settings of 0 have been arrived at through testing in multiple environments. The use of other settings is at your own risk. Uniden America Corp. is releasing access to these features without support."
I have version 1.11.04
It would seem to me that default settings of "0" would be the same as AGC Off.
Am I correct in this thinking ?
The tweaks I made were as follows;
Digital
P25 resp time -7
P25 ref gain +3
Analog
Resp time -3
Ref gain -2
Gain range +11
These ranges were posted by another poster to these groups who monitor the same systems I do. They may in fact be better than the defaults but I still would like to know the factory defaults should I ever want to reset them.
Would a scanner reinitialization put these settings back ?
My questions are:
Would someone be willing to check to see what the original factory settings are and post back with the correct parameters ?
Or perhaps someone made these changes and had more foresight than I and copied down the factory settings before making these changes and could post them ?
And finally, Are the changes made to these parameters only relevant if AGC is turned on ?
I'm trying to learn so please be patient.
The instructions for accessing these "hidden" settings are:
P25 AGC Settings
To access these settings:,
1. Press [HOLD] while turning on the scanner.
2. Turn on the Digital AGC option.
3. Tune to a digital channel.
4. While receiving a P25 signal, hold F then tap the scroll knob. The scanner displays the current P25 RES TIME parameter setting (see below for option details).
5. Rotate the scroll control to change the setting.
6. F+rotate the scroll to select another setting.
Parameters:
P25 RES TIME
Range: -8 to +8
This parameter determines how frequently the AGC factor updates. Decreasing this value makes AGC respond faster, but could result in “pumping.” A higher value decreases the response time.
P25 REF GAIN
Range: -5 to +5
This parameter determines the reference level that AGC attempts to adjust the volume to. If digital/analog volume is not matched, adjust this parameter.
Analog AGC Settings
To access these settings:,
1. Press [HOLD] while turning on the scanner.
2. Turn off the Digital AGC option and turn on the Analog AGC option.
3. Tune to an analog channel.
4. While receiving a signal, hold F then tap the scroll knob. The scanner displays the current ANA RES TIME parameter setting (see below for option details).
5. Rotate the scroll control to change the setting.
6. F+rotate the scroll to select another setting.
Parameters:
ANA RES TIME
Range: -8 to +8
This parameter determines how frequently the AGC factor updates. Decreasing this value makes AGC respond faster, but could result in “pumping.” A higher value decreases the response time.
ANA REF GAIN
Range: -5 to +5
This parameter determines the reference level that AGC attempts to adjust the volume to. If digital/analog volume is not matched, adjust this parameter.
ANA GN RANGE
Range: 0 to 15
This parameter controls the total dynamic range of the AGC adjustments. A larger value allows a wider variation in volume.
Thanks for any and all suggestions.
