D
DaveNF2G
Guest
I have noted a second hex code flashing on my SDS-200 screen right after (alongside, not alternating with) the programmed site NAC on a Phase II trunked system. What is the function of the second code?
Hi Dave when I asked the question I was told the first numbers are the site NAC and the second set that come up are the voice channel NAC, for this to show undersettings you must have Ignore Site NAC. turned on. If you haveI have noted a second hex code flashing on my SDS-200 screen right after (alongside, not alternating with) the programmed site NAC on a Phase II trunked system. What is the function of the second code?
Hi Dave when I asked the question I was told the first numbers are the site NAC and the second set that come up are the voice channel NAC, for this to show undersettings you must have Ignore Site NAC. turned on. If you have
Use Site NAC turned on you won't see the second set of numbers. I know my Site NAC is correct but I see both sets of numbers when Ignore is turned on. When Uniden added the feature it was because R/R had some NAC that were wrong.
That sounds highly problematic. Citation?In some non-Motorola systems the VC NAC is different than the CC NAC.
That sounds highly problematic. Citation?
I haven't had any problems with it my reception is just fine. If I don't want to see both NAC it turn the option to Ignore off.That sounds highly problematic. Citation?
I've monitored the following Phase II networks and it's my understanding that they're Harris setups.Hopefully I didn't misspeak, but I "believe" Harris system do this. If I'm incorrect I apologize.
I've monitored the following Phase II networks and it's my understanding that they're Harris setups.
For all monitored sites, P2 DCC = P1 NAC.
Network: 148DE.00A ; Durham Region PS
Network: 458AD.227 ; Monroe/Ontario County
Network: 458AD.228 ; Monroe/Ontario County
Network: 458AD.229 ; Genesee County
Network: 458AD.22A ; Orleans County
I doubt that those are "alternate" NACs. Every site has one NAC assigned to it. Whether NACs are unique across all sites in a system appears to be up to the system operator. Using unique NACs across neighboring sites would be the correct way of doing things, but there is nothing "alternate" about them. BTW, believing what a scanner tells you is ill advised, IMO.The Oneida County Phase II system here in Central NY also provides alternate NACS. The alternate NACS are often assigned to the Phase I systems for neighboring CNYICC counties (Madison, Oswego, etc.).
With all due respect, and I mean that sincerely and not in the usual sarcastic way...let's refrain from making such an iron-clad declaration and allow for the possibility that the scanner is simply displaying/receiving an incorrect NAC.(first xxxh is incorrect NAC, 2nd is received NAC)
- If the RRDB NAC does not match received NAC: NAC xxxh --> xxxh (FLASHING)
I would encourage anyone having this NAC issue to read @k2hz post, and to also change your global Site NAC Operation setting to Use Site NAC. This appears to possibly be a firmware bug in the SDS series.I found the same condition with my SDS100 when receiving marginal quality signals. The NAC would be displayed correctly (ex: P25 NAC: 8B1h) when idle on the CC but would shift to displaying "NAC: 8B1h 47Fh" during active TG reception. I verified with UT and DSD+ that 8B1H was the correct NAC on this system. I noted the same condition on another system with marginal reception. One system was Motorola and the other Harris so that was not a factor.
I found that I had the global "Site NAC Operation" set to "Ignore Site NAC" vs "Use Site NAC" . I changed the setting to "Use Site NAC" and the problem went away. It is apparently an artifact of the SDS100/200 firmware.
It means the firmware is buggy. Ignore it, it means nothing. 2A5 is the correct NAC for the Oneida cell, 0A9 is meaningless.This isn't critical, but I'm still wondering what 0A9h means.