Three Meshtastic nodes are active in Cape Town for off-grid communications during disasters or just to meet your neighbours

Myself and two other ham radio operators have established 3 Meshtastic nodes that will operate 24/7 to help build out more connectivity across Cape Town.

We are using license-free 868 MHz radios, so anyone can buy these cheap (ish) devices and get connected. The more nodes we have, the better the connectivity gets across the whole city. These radios will keep messaging going regardless of whether there is Internet or not. So, if we hit Stage 8+ load shedding and cell towers and Internet starts to go down, this messaging network will still work.

This means that citizens can message for assistance needed, and this can be relayed to City or Provincial Disaster Risk Management. Or in cases of loss of communications during a disaster we can also send out messages to everyone on the network as to where water tankers will be deployed etc.

Apart from the public channel (which is much like CB radio’s Channel 19) anyone can also create their own private channels (with passwords) to stay in contact with groups of friends or family. The connections between all radio nodes are encrypted with AES256 encryption, so private messages will stay private even though they bounce across 3 or more other radio nodes to reach the recipient.

You have a phone, so all that is needed is the free Meshtastic app, and a Meshtastic compatible radio device. This is probably bad timing, as right now there is a global shortage of Meshtastic radio devices. The massive global uptake has also made this situation even worse. But the point of preparing for disasters, is to do that well before a disaster strikes.

I’ve documented a lot of my lessons learnt, as well as given some context to the situation in South Africa for this service at the linked web page below.

See https://gadgeteer.co.za/hamradio/meshtastic-in-south-africa/