 It was a 160 MHz system available in Stockholm and Gothenburg, with 125 total subscribers.The second system, MTB (for "Mobiltelefonisystem B"), had transistorized mobile sets, was introduced in 1962, and lasted until 1983.It operated in the 76–77.5 and 81–82.5 MHz bands, was also available in Malmö, and had around 600 subscribers.