MTD (Swedish abbreviation for Mobiltelefonisystem D, or Mobile telephony system D) was a manual mobile phone system for the 450 MHz frequency band. It...
2 KB (233 words) - 18:03, 31 May 2024
phone system for vehicles was launched in Sweden in 1956. Named MTA (Mobiltelefonisystem A), it allowed calls to be made and received in the car using a rotary...
65 KB (7,354 words) - 14:02, 20 October 2024