Callsigns starting with OH4
| Callsign | Last heard | Comment |
|---|---|---|
| OH4AC | 4m20s ago | Club meetings on Sun at 6 pm. |
| OH4GGW | 19m59s ago | /Otava iGate, Odroid C1, GM340 & RIM-Maxtrac |
| OH4GVN-1 | 2m53s ago | 4/Puumala |
| OH4JOU | 8h50m ago | 145.625MHz op. Heikki |
| OH4JPS-2 | 57s ago | Raspberry pi / tnc-X Rx-only igate, Jari OH4JL Mia OH4HNT |
| OH4KA-4 | 10m47s ago | Raspberry pi / tnc-X Rx-only igate |
| OH4KA-8 | 2h13m ago | KARI |
| OH4MM-9 | 14h52m ago | 14.5V- FORESTER |
| OH4RAC | 4m40s ago | /145.750MHz T103 -060 |
| OH4RDC | 6m9s ago | /Wn,Tn,R,MIKKELI,Muinola |
| OH4RDD-2 | 24m49s ago | APRS iGate |
| OH4RDS | 42s ago | R,Wn,Tn Savonlinna |
| OH4RUB | 6m17s ago | MMDVM 434.8000/432.8000 CC1 |
| OH4RUB B | 3m23s ago | 70cm Voice (D-Star) 434.80000MHz -2.0000MHz |
| OH4RUB-B | 3m13s ago | 70cm Voice (D-Star) 434.80000MHz -2.0000MHz |
| OH4RUB-D | 3m33s ago | 70cm MMDVM Voice (DMR) 434.80000MHz -2.0000MHz, APRS for DMRGateway |
| OH4RUB-R | 3m53s ago | 70cm MMDVM Voice (C4FM) 434.80000MHz -2.0000MHz, OH4RUB_Pi-Star_RPT |
| OH4RUC | 6m18s ago | MMDVM 434.7500/432.7500 CC1 |
| OH4RUC-10 | 4m27s ago | /432.750MHz Rx-only iGate |
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