A radio phone (ARP) is the first mobile phone network, public trading in Finland. Technology used Generation Zero (0). the difference is that it the cells. move between them seamlessly was not. Network in 1968 was suggested and build it from 1969 began. It, in 1971, was accessed and geographical coverage of 100 percent in the year 1978 with 140 base stations. Network the ARP in the year 2000, with the coming of the NMT-900 was closed.

the ARP was a success and popularity achieved good (10800 users in the year 1977 and, ultimately, 35560 user in 1986), but in the end, so dense was and gradually with the technology, newer NMT was replaced. However, ARP is the only mobile network with coverage of 100% for the long-awaited be and their popularity in a specific group of users keep.

ARP at a frequency of 150MHz (the number of 80 channels in the band 147 is 9-154. the 875 MHz) was run. Transmission power from 1 to 5 watt range categories. At first it only transfer half-duplex use. later, telephone, two-sided car introduced. Because of the analog being, then the encryption did not, and because of the same contact devices, scanner readable . This system works with your service switch manually started, but in the 1990's completely automated. though, at that time, the number of gone to the 980 user fell. The ARP of the displacement is not supported. so call when you go to a new cell cut off. The size of each cell is almost 30 km.

the first mobile devices ARP in terms of volume so big were because of the same time in the body of the car, embed were that to a phone near the driver's seat were connected. Also, the ARP, the price expensive. In 1990, the phone manual for the ARP were introduced, but very popular people. because systems such as NMT with the new equipment were not available.