Callsigns starting with 4S7
| Callsign | Last heard | Comment |
|---|---|---|
| 4S7DSB | 3m39s ago | 4S7DSB's QTH |
| 4S7GGA | 6s ago | Sri Lanka Girl Guides Association |
| 4S7JL-4 | 2m52s ago | Jaliya's QTH |
| 4S7LEO | 2m9s ago | Rajadhahana - LEO's Den |
| 4S7MD | 1m5s ago | Senevi's QTH |
| 4S7NDR | 1s ago | 4S7NDR's QTH - Available on 144.440 MHz |
| 4S7RCS-1 | 2m ago | ARCSN Lora iGate - www.arcsn.lk |
| 4S7RCS-R1 | 3m34s ago | ARCSN Padukka RPTR | 145.675 / -600 MHz |
| 4S7RCS-R2 | 3m13s ago | ARCSN Gammaduwa RPTR | 145.150 / +600 MHz |
| 4S7RO | 4m34s ago | 4S7RO's QTH |
| 4S7RS | 4m59s ago | RSSL Club Shack |
| 4S7RS-R1 | 4m38s ago | RSSL Yatiyanthota RPTR | 145.625 / -600 MHz | Daily Net @1530UTC | 4S7RS-R Echolink |
| 4S7RS-R2 | 4m17s ago | RSSL Piduruthalagala RPTR | 145.650 / -600 MHz | Daily Net @1530UTC | 4S7RS-R Echolink |
| 4S7RS-R3 | 3m55s ago | RSSL Deniyaya RPTR | 145.600 / -600 MHz |
| 4S7SA | 4m ago | 4S7SA's QTH |
| 4S7SE | 2m56s ago | DSSC Scouts |
| 4S7SKR | 1m31s ago | 4S7SKR-Mario |
| 4S7UV | 2m35s ago | 4S7UV's QTH |
| 4S7VJ | 4m43s ago | 4S7VJ's QTH |
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