Components:
| component: | current Price ($aud): | url: |
|---|---|---|
| Heltec V4 LoRa board | $39.39 | https://www.aliexpress.com/item/1005010490631536.html |
| 915Mhz 45cm Fiberglass antenna | $32.79 | https://www.aliexpress.com/item/1005006428104797.html |
| N to SMA adapter (2-pack) | $16.99 | https://www.amazon.com.au/BOOBRIE-Connector-Converter-Antennas-Broadcast/dp/B07DC2B295 |
| IP67 Waterproof electrical box | $8.34 | https://www.aliexpress.com/item/1005007437283895.html |
| 4W Solar Panel with 18650 slots & USB-C output | $30.96 | https://www.aliexpress.com/item/1005008799119132.html |
| 2x 18650 2400mAh | $9.39 | https://www.aliexpress.com/item/1005010306459849.html |
Total: $137.86
Note: Prices are typically cheaper on the last few days of the month.
Holes were drilled into the electrical box for the USB-C power cable and the antenna connection. This was sealed with cloth tape. It was then attached attached to the balcony with cable ties.




It achieves great range. In a suburban area it is reaching a repeater 30km away (due to lucky line-of-sight) as well as other closer repeaters <10km.
It is configured on NSW Wide settings: which is:
915.8Mhz
Coding Rate: 5
Spreading Factor: 11
Bandwidth: 250kHz
The power situation unfortunately is not the best with it only lasting overnight on sunny days. However almost all usage is during the day so this is not a major problem for me.