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Old 07-09-2017, 10:44 AM
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Default P25 Phase 1

When putting in the control channels and let's say there are 4 of them do you put the last one in first and then the 3 one and 2one and then the first one or does it not matter.

Also, the are several other freqs. that are in black do they need to be put in. Or will the control channels find them.


It's for Niagara County (NY) freqs. It's for a GRE PSR500 scanner
PLEASE e-mail me if you would: reallard5276@gmail.com

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Old 07-09-2017, 10:50 AM
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Control channels in any order.

No need to program voice channel frequencies.
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Old 07-09-2017, 11:08 AM
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Quote:
Originally Posted by RKG View Post
Control channels in any order.
Yup.

Quote:
No need to program voice channel frequencies.
Usually. Depends on the data on the RRDB and the stability of the system - but in general, yup.
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Old 07-09-2017, 12:09 PM
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The above is correct, however it does no harm that I have found to just enter them all.

536/436/ws1095/996p2/996xt/325p2/396xt/psr800/396t/HP-1/HP-2 & others
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Old 07-09-2017, 12:58 PM
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If you're smart you'll program all the frequencies not just the red and blue ones. Some systems can use any of the frequencies as a control channel.
If you don't have all of them programmed and the control channel changes to a frequency that isn't listed in the db as a control channel then you will wonder why you can't receive the system any more.
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Old 07-09-2017, 1:02 PM
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ONLY a Harris System uses all Frequency's no need to add them from a Motorola System just the RED and BLUE Control Channels
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Old 07-12-2017, 6:21 PM
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Quote:
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ONLY a Harris System uses all Frequency's no need to add them from a Motorola System just the RED and BLUE Control Channels
This is true, as long as the database is 100% accurate.

536/436/ws1095/996p2/996xt/325p2/396xt/psr800/396t/HP-1/HP-2 & others
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Old 07-13-2017, 7:59 AM
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For P25 simulcast systems of any vendor, I find that if the control channel (or channels) is (are) fairly stable, you're better off trying to limit the number of site frequencies programmed as much as possible (i.e. only program the known CCs). This is even more important if/when there are a larger number of system frequencies and/or multiple sites. For simulcast systems, scanners tend to struggle to hold onto the CC and the more frequencies you have programmed, the longer the radio will take to try and recover when it loses lock on the CC.

Of course, the downside is if the system/site is unstable and/or rotates through and uses all of the systems frequencies at one time or another - then your only option is to program all of them. There are other "creative ways" to do both - for example, program the system twice - once with the known CC frequencies only and have the second copy of the system with all frequencies programmed. You can then control which copy you're monitoring with scanlist assignments.
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