# TTN Siechnice high altitude SF7 transmission record

> On 3rd of March we hit 15[km] of SF7 transmission distance airing from 40[m] above the ground We hit the record by transmitting an unconfirmed packet using mote

- Type: Community update
- Community: [The Things Network Siechnice](https://www.thethingsnetwork.org/community/siechnice/)
- Author: Grzegorz Kaczmarek
- Published: 2018-03-03
- Web page: https://www.thethingsnetwork.org/community/siechnice/post/ttn-siechnice-high-altitude-sf7-transmission-record

## On 3rd of March we hit 15[km] of SF7 transmission distance airing from 40[m] above the ground

### We hit the record by transmitting an unconfirmed packet using mote held in hand but standing on the top of the view tower 40[m] above ground with antenna pointing straight up.

![file](https://www.thethingsnetwork.org/media/md_editor/image-1520090647966.large.JPG)

Tower is located in Kotowice village located 15[km] away from farthest GW we've reached in Wroclaw.

![file](https://www.thethingsnetwork.org/media/md_editor/image-1520091695416.large.png)

Node side:

```
* location: Kotowice view tower
* antenna: 2,15[dBi] held in hand 40[m] above ground
* chip: RN2483 (LoRa Technology Mote)
* spreading factor = SF7
* TX power = +14[dBm]
* error coding = 4/5
* bandwidth = 125[kHz]
* connection type: unconfirmed
```

Gateway side:

```
* location: Wrolcaw, Reja
* EUI: 1234567892ABCDEF
* RSSI = -118
* SNR = +1.20
```