About McPherson Police Frequencies
- Trunked radio systems that carry law-enforcement traffic here: Allied Radio Matrix for Emergency Response (ARMER): 5 talkgroups. A trunking scanner is required, and it must support the system type shown.
- To follow a trunked system, program a control channel first. For McPherson, start with the Janesville site of Allied Radio Matrix for Emergency Response (ARMER), about 6 miles away. Its control channels: 851.75 MHz.
- 3 listed entries are marked encrypted. No scanner can decode encrypted audio.
Blue Earth County channels that also cover McPherson
Allied Radio Matrix for Emergency Response (ARMER)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Blue Earth County Sheriff | Blue Earth Sheriff – VHF Link | 34404 | 8664 | D |
| Blue Earth County Sheriff | County Jail | 34420 | 8674 | D |
3 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Blue Earth County Sheriff | Law Tactical | 34448 | 8690 | D Encrypted |
| Blue Earth County Sheriff | LAW 7 | 34457 | 8699 | D Encrypted |
| Blue Earth County Sheriff | LAW 10 | 34460 | 869c | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of McPherson.
Janesville · Allied Radio Matrix for Emergency Response (ARMER)
RFSS 3 · Site 31 (hex 1F) · about 6 mi away
Control 851.75
Voice 851.4125, 852.3875, 852.8875, 853.4125, 853.9125, 857.4375
Waldorf · Allied Radio Matrix for Emergency Response (ARMER)
RFSS 3 · Site 82 (hex 52) · about 13 mi away
Control 852.9125
Voice 851.3125, 851.475, 852.4125, 853.8875, 856.4875
Mapleton · Allied Radio Matrix for Emergency Response (ARMER)
RFSS 3 · Site 81 (hex 51) · about 16 mi away
Control 855.7125, 856.9375
Voice 851.175, 851.9625, 852.4625, 856.2125
What do these numbers mean?
- Control channel
- The frequency your scanner listens to first. It tells the scanner where each voice call is happening, so program it before anything else.
- Voice
- The other frequencies the site uses for calls. A trunking scanner follows them automatically once it has the control channel.
- Site
- One tower location of the system. Scanners show the number in decimal or hex, so both are listed.
- RFSS (Radio Frequency Sub-System)
- A group of sites run by the same controller. Large Project 25 systems can have several.
- NAC (Network Access Code)
- A hex code the site transmits. Your scanner can use it to ignore other systems on the same frequency.
- Talkgroup
- A virtual channel on a trunked system, such as one agency’s dispatch. Programming uses the decimal or hex number, depending on your scanner.