Hamilton County
By the numbers: about 371,645 residents (2023 U.S. Census estimate) · 851 licensed amateur radio operators — 413 Technician, 195 General, 41 Advanced, 197 Extra, 5 Novice · 10 licensed club stations · 57 more licenses in the FCC's two-year renewal grace period (FCC licenses, by ZIP).
Ham Radio Clubs
- Hamilton County ARES (N9EOC): hcinares.org | Facebook
Nets: Sundays 8:00 PM on 145.170 MHz and 443.550 MHz (77 Hz tone)
Repeater(s): 145.170 MHz (PL 77.0) FM, Hamilton County (K9EOC); 443.550 MHz (PL 77.0) FM, Hamilton County (K9EOC)
- Central Indiana Amateur Radio Association (CIARA) (N9EOC): n9eoc.org | ciara.n9eoc@gmail.com | Facebook | Facebook Group | QRZ
Meetings: 1st Saturday monthly at 9:00 AM — Noblesville Fire Station 76, 16800 Hazel Dell Rd, Noblesville, IN
Nets: Sundays 8:00 PM on 145.170 MHz and 443.550 MHz (77 Hz tone)
License exams: The club runs VE test sessions in Noblesville — under the ARRL VEC at the Hamilton County Sheriff's office, 18100 Cumberland Rd, on Saturdays at 10:30 AM at least four times a year ($15, exact cash). Details
Repeaters
Our directory lists 2 amateur radio repeaters in Hamilton County on the 2m and 70cm bands. A dash means we don’t have that detail on file — check with the sponsoring club or RepeaterBook before you rely on it.
| Frequency | Offset | Tone | Mode | Location | Sponsor |
|---|---|---|---|---|---|
| 145.170 | — | 77.0 | FM | Hamilton County (K9EOC) | Hamilton County ARES (N9EOC) |
| 443.550 | — | 77.0 | FM | Hamilton County (K9EOC) | Hamilton County ARES (N9EOC) |
View Hamilton County on RepeaterBookBrowse all Indiana repeaters
Emergency Communications
Hamilton County is part of Indiana ARES District 5 (which mirrors IDHS District 5). Learn how amateur radio supports emergencies in Indiana — ARES, RACES, and Skywarn — on our EmComm page.
Severe-weather watches and warnings for Hamilton County come from the National Weather Service — NWS Indianapolis office. Trained Skywarn spotters relay reports during severe weather; see our EmComm page.
The information on this page may not be fully up to date. If you notice anything incorrect or missing, please email campbell@indianahamradio.com with the correction.
Nets in Hamilton County
2 nets meet regularly in Hamilton County. Visitors are welcome to check in — see the full Indiana net schedule for statewide nets too.
- Hamilton County ARES Net
- Central Indiana Amateur Radio Association (CIARA) Net
Nearby counties
Hamilton County borders 6 other counties. Repeaters and clubs just across the line are usually well within range, so it is worth checking them too: