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Patch number logic

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Jay911

Jay911

Silent Key (April 15th, 2023)
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Hi there,

Can someone educate me on how patches get assigned their numbers? Are they some kind of combined value based on the talkgroups they're patching, or are there a number of patches generally "hard-coded" in the system?

I'm not talking about seeing decimal group 304, when patched, showing up as 307 or 311. Trunker has logged for me a number of patches and consistently shows patch IDs of 4115, 4117, 4119, and 4121, when groups 304, 336, 368, and 400 are patched or multiselected together. I also see patch 6187 routinely for dec IDs 33456 and 33840. Perhaps I should be asking this in the Trunker forum instead but I figured this might be a Motorola design rather than something Trunker has done.

I suppose it's too much to expect that there's a document illustrating the various codewords and such on a Motorola system, like there is for the MPT1327 standard.. :)
 
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slicerwizard

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Motorola patch numbers are the supergroup (the first talkgroup assigned to the patch) + 4096.

Talkgroup 304 on a scanner is really talkgroup 19 (304/16=19).

19+4096 = patch ID 4115.

In hexadecimal notation the same numbers look like: TG 13 + 1000 = patch 1013.
 
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