70cm threat?

Many do not realise it, but parts of the 70cm amateur band are shared with other services. Already there are some transceivers (licence free) that operate at low power at 70cm.

Southgate News has a piece about adding a transceiver module to a smartphone that gives communications at longer ranges than wi-fi . It operates at ISM frequencies at 433 and 915MHz.

The photo shows a typical 433MHz LORA module. There are plenty on the internet. The one on the Southgate link was 100mW.

See http://southgatearc.org/news/2019/july/adding-lora-long-range-radio-to-smartphones-and-connected-devices.htm