Reset the P25 Settings; Make Adjustments to the New AGC Settings
squirrel said:
I applied the new firmware and the flash went without incident.
But now it seems I lost sensitivity and i get alot of garbled audio. I did not change anything else except flashing to new firmware. It was working perfect before the upgrade.
Mine did the same thing. You may have to reset the Auto P25 start level. I listen to LAPD. Before the firmware update, I had the P25 setting at "8 Auto." After the setting, I had to reset it to "7 Auto."
If anything, the radio is now
more sensitive to P25 transmissions - a good thing?
Also, you may now need to adjust the new AGC (Automatic Gain Control or automatic volume control) settings or just turn off the AGC. If the system which you are trying to listen already has AGC/AVC built in (the agencies radio system and radios have AGC/AVC), then you need to turn the AGC off for that system. Otherwise you will receive with poor audio qualities because both the radio system and your scanner are trying to make audio adjustments using the AGC that may result in poor audio quality, such as you reported.
The best thing to do is turn the AGC off for both Digital and Analog, and see how it sounds without it first. If you feel you need AGC, play with the adjustments until it sounds correct. The default settings are "P25 RES TIME: +0" and "P25 REF GAIN: +0." Adjust these settings up (+) or down (-) to gain maximum audio quality. For me, RES at -3 and REF at +3 gave me the best results for systems that I believe do not already employ their own AGC/AVC. However, in most cases, I leave the AGC off for both digital and analog. I am still tinkering with it to find the best settings for my area.
My only gripe is that I cannot set the AGC per each system.
One AGC setting is NOT always the same or the best for each system; however, we are forced to have only ONE AGC setting. I may want to have the AGC "off" for one system, "RES -5, REF +4" for another system, and "RES +8, REF -2" for another system. But no, I guess Uniden thinks that we can't handle all that control or some of us may get confused if there are too many settings for each system:roll: . I say this about
all the settings for all the functions, such as we should be able to set the backlight time for each backlight setting (Squelch, Keypress, globally) and the ability to restore Locked Out channels in each system or globally.
