DOS Muting does not appear to work at all on the XTL1500. On the XTL5000, I was able to make it work by setting it to "1800Hz Only." On the XTL1500, regardless of setting, the infernal MDC1200 squawks come through unfiltered. The radio is able to decode them and display them on screen, so it knows they're there. It's just not muting them. I have a CDM1550 on the bench next to it that reduces the noise to an inoffensive chirp.
Here is the configuration, pretty basic. I have a single zone of 12 channels, with all channels belonging to a single conventional personality. The personality is mixed-mode RX, and is RX-only. All channels are Part 90 stuff at 12.5 kHz deviation. There is a single MDC system, set up for DOS muting, and the personality is set to use that MDC system. All 12 channels are in a scan list, with no priority configured.
The scan list does not seem to be the problem. Subsequent communications during the hold time do not mute the squawk. Turning scan off and parking on a channel does not change anything, either.
Do I just have something configured wrong? I am noticing that MDC IDs only display while in scan, but not when parked on a channel with scan off, which is... interesting.
Also strange, and not a problem I recall on the XTSs I've worked with: with 11 analog channels and 1 P25 (conventional) channel, the P25 channel is never heard during scan. It is my local police department, so the signal is nice and strong. I initially theorized it was maybe something with priority scan, and enabled "Late Entry Fast Unmute." (Also, I configured that priority scan is not actually enabled.) This did not help. If I select the P25 channel with scan off, they sound fine.
Is this a known bug? Am I just stupid and missing an obvious setting? (You can just answer the latter half of that question if the answer is "Yes"
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