PMJ2kx is 50416 Ops 38? NORCOM Dispatches on 154.160, Woodburn FD/ Amb. and all North Marion county Fire depts. The freq is called North-1 . 154.385 is Central 1
Yeah, I heard NORCOM and Aurora units both, until E52 canceled. Then I only heard Aurora's units talking. I'm pretty sure Aurora uses North 1.The patch is working... Did you hear NORCOM ?? And are units from Aurora FD they using North-1? I think Aurora Fire uses North-1 as Ops but not sure.
Scanners don't use "FCC" channel numbers. In 3600 bps Motorola systems (e.g. SmartZone, SmartNet), the control channel (CC) messages include Motorola-specific channel numbers that identify voice channel (VC) frequencies. In VHF and UHF ("OBT") systems, you have to program a "base, offset, and step" for every system (though there are some default values, like 406.000/380/25.000 for UHF). In 800 MHz systems, there is a "standard" table of channel number -> frequency mappings - mappings that have nothing to do with any FCC channel-numbering scheme.Most scanners do not use the exact freqs. to follow trunked conversations. They use the FCC Channel numbers that are sent over the control channel.
In the "standard" 800 MHz Motorola mapping, channel 0 is 851.0125, channel 1 is 851.0375, ..., channel 719 is 868.9875. Above channel 719, things "change" a little.They are 1-120 in the 851-854MHz band. 1=851.0125, 2=851.0375, 3=851.0625, etc. 120=853.9875. The spacing is .0250.
No. Motorola's channel 3 is still 851.0875. What Motorola did was change their channels 440 through 559 - instead of their old range of [862.0125 .. 864.9875] (on 25kHz steps), those channels are now [851.0250 .. 854.0000] (still on 25kHz steps).If the control channel tells your scanner to tune to channel 3 (now 851.0625), the freq. on channel 3 has been changed to 851.0375
ChLO ChHI Step Offset Base
440 559 25.000 440 851.025000
000 719 25.000 0 851.012500
720 759 25.000 0 848.000000
815 831 25.000 0 846.625000
958 958 25.000 958 868.975000
961 1022 25.000 0 843.400000
Scanners don't use "FCC" channel numbers. In 3600 bps Motorola systems (e.g. SmartZone, SmartNet), the control channel (CC) messages include Motorola-specific channel numbers that identify voice channel (VC) frequencies. In VHF and UHF ("OBT") systems, you have to program a "base, offset, and step" for every system (though there are some default values, like 406.000/380/25.000 for UHF). In 800 MHz systems, there is a "standard" table of channel number -> frequency mappings - mappings that have nothing to do with any FCC channel-numbering scheme.
In the "standard" 800 MHz Motorola mapping, channel 0 is 851.0125, channel 1 is 851.0375, ..., channel 719 is 868.9875. Above channel 719, things "change" a little.
No. Motorola's channel 3 is still 851.0875. What Motorola did was change their channels 440 through 559 - instead of their old range of [862.0125 .. 864.9875] (on 25kHz steps), those channels are now [851.0250 .. 854.0000] (still on 25kHz steps).
Scanners need to "know" that channels 440-559 are now moved down to these new frequency assignments. In the GRE-made PRO-96/2096 and PSR-500/600, this is done by creating a "table" that contains that mapping information:
All but the first line are the "standard" 800 MHz table entries. The new line at the top (channels 440-559) tells the scanner the math to use for that "remapped" range of channels: VCfreq = (channel - Offset) x Step + BaseCode:ChLO ChHI Step Offset Base 440 559 25.000 440 851.025000 000 719 25.000 0 851.012500 720 759 25.000 0 848.000000 815 831 25.000 0 846.625000 958 958 25.000 958 868.975000 961 1022 25.000 0 843.400000
At present, the aforementioned PRO-96/2096 and PSR-500/600 are the only scanners that allow you to enter this information; they're the only scanners that will follow a "rebanded" system that has had any of its VC frequencies "moved" to the new 440-559 channel mappings.
Don't know who is 800. That TG is normally named Cornelius EOC. It is located in the radios out west in zone B, position 11. Therefore, B-11. A-1 would be dispatch as another example. All of the Moto radios in use in Wash and Clack have either 3, 8, 10, 16 or 17 "zones" or banks of 16 "modes" or channels each. So anywhere from 48 to 272 channels each. 272? Yes. Why? Who knows. Because they can?