It is Bluetooth mesh (~100m per hop) + nostr relays (probably did not work) + Lora (just recentl upgrade, not sure how or if it works yet) - kilometers per hop !
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100 meters on a Bluetooth connection? This does not sound right. Have you ever walked away from an audio source wearing wireless headphones?
Wireless headphones have shit antenna and are high bandwidth.
Its bluetooth low energy (BLE) those waves travel longer