Higher numbers are more permissive (the thresholds for decoding are wider) while smaller numbers tighten the threshold ranges. The radio will rememberĮvery time it has to decode digital audio.
Hold Func and press the scroll knob twice That Default is basically the same as Auto.
Astro saber squelch 1 or 9 series#
The newer BCDx36HP Series models have shown
Astro saber squelch 1 or 9 manual#
To exit, viewing the screen, press FUNC/Scroll - VOL.ĭefining of P25 Threshold Auto, Default, Manual Setting This is that System's "optimum decode threshold". Then, once it's seem to have stabilize or with LSM P25 Phase I and II at least, where you can see and hear the best decode values, write down the values from the screen. The error rate should begin drop for each transmission and the threshold levels should have adjusted to its best setting. The last line on the display shows the 3 millivolt values in a 3-digit representation 1.xx "Threshold Levels".Īllow the scanner to monitor channel activity for several minutes on a single specific System/Site (without additional Systems monitored at all). The next to last line on the display, should now show the "current threshold level" (0-20 (model dependent)), with "AUTO" on the right, and in between (with an active voice transmission,) the digital bit error rate. The P25 Threshold levels appear as the bottom 2-lines of the display. 996T, 996XT, 996P2, 536 press the Scroll wheel the control then Vol knob.396T, 396XT, 325P2, and 436 press Func then Vol knob (on T hold Func).While you viewing the typical scanner system talkgroup on an active digital channel on a receivable System display: Let's first make sure we have the P25 Level set option is set to Auto. P25 system decode and voice Viewing the P25 Threshold levels on the Display 2 Additional Reading (Easier to Read Manuals).1.6 History of P25 Threshold BETA TESTING & NOTES.1.3 Manually Adjusting P25 Decode Thresholds.1.2 Defining of P25 Threshold Auto, Default, Manual.1.1 Viewing the P25 Threshold levels on the Display.Lets start at just viewing the screen, then onto defining and adjusting, and lastly additional digital decode refinements Once optimized for a System, the threshold settings shouldn't be changed in the x96T or x36HP series, regardless of future interference or signal conditions, unless you have confirmation that the system engineers have actually made changes to the system itself (which is highly unlikely). Only after fixing any reception issues (changing antennas (less is more w/ digital), location, etc) should you try to optimize the P25 decode setting. You can easily double-check the Control & Voice Channels by tuning into them as conventional frequencies and opening squelch, and then listening to them to hear if you are getting dropouts or audible interference.
If you have bad receive, you'll have bad decode, regardless. The other side of that coin is, that the maunal adjustment(s) do absolutely nothing to fix reception issues. The adjustment(s) mentioned below must be done while you have good reception. There are the additional caveats explained further in this article. It is likely "the most important thing," besides good reception, of how well, the digital system, will be decoded. In some scanner models it is System/Site specific, in other models it is a hidden feature. There's three variants in the Menu to help for the "novice", the "intermediate," "advanced' users, at least try to enable a 'bit' better decoding than standard Auto settings. The P25 Threshold is a kind of "digital squelch setting". P25 digital decode threshold adjustments allow user to control of how digital system are decoded inside the scanner.
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