There was also the Dolphin network in the UK, offering a public national subscription TETRA network. It didn't prove commercially viable. https://www.rcrwirele

There was also the Dolphin network in the UK, offering a public national subscription TETRA network. It didn't prove commercially viable. https://www.rcrwireless.com/19980309/archived-articles/dolphin-to-use-tetra-system https://www.rcrwireless.com/19980309/archived-articles/dolph...