About Roundhead Police Frequencies
- 1 conventional channel uses a digital mode (P25), which needs a scanner that decodes that mode.
- Trunked radio systems that carry law-enforcement traffic here: Ohio MARCS-IP: Multi-Agency Radio Communications: 3 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 Roundhead, start with the Ada (Kenton) site of Ohio MARCS-IP: Multi-Agency Radio Communications, about 11 miles away. Its control channels: 772.93125, 774.83125 MHz.
Hardin County channels that also cover Roundhead
Talk-around & Car-to-Car
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Hardin County Sheriff | County sheriff talkaround | 774.5563 | NAC 336 | P25 | — |
Ohio MARCS-IP: Multi-Agency Radio Communications
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Hardin County Sheriff | Hardin County Sheriff – Dispatch | 22500 | 57e4 | D |
| Hardin County Sheriff | Hardin County Sheriff – Dispatch | 54790 | d606 | D |
| Hardin County State Corrections | Adult Parole Authority – Lima Unit | 52858 | ce7a | D |
Nearest trunked radio sites
Distances are measured from the center of Roundhead.
Ada (Kenton) · Ohio MARCS-IP: Multi-Agency Radio Communications
RFSS 2 · Site 33 (hex 21) · NAC 340 · about 11 mi away
Control 772.93125, 774.83125
Voice 769.90625, 771.10625, 771.40625
Bellefontaine · Ohio MARCS-IP: Multi-Agency Radio Communications
RFSS 1 · Site 18 (hex 12) · NAC 341 · about 16 mi away
Control 772.55625, 773.15625
Voice 769.45625, 770.18125, 771.35625, 772.10625, 853.1625, 853.8875, 857.0375, 859.0875
Lima · Ohio MARCS-IP: Multi-Agency Radio Communications
RFSS 2 · Site 28 (hex 1C) · NAC 34B · about 18 mi away
Control 774.45625, 774.78125
Voice 769.53125, 770.58125, 773.80625, 774.05625, 851.7, 851.9625, 853.2625, 853.6375, 854.1875, 856.6625
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.