have to provide for 27MHz to 45.3.5 Italy 50 MHz h.f.; 138MHz to 174MHz v.h.f.; 445MHz to 470MHz u.h.f.. 900 MHz is also popular in these countries. None of the bands 45.3.5.1 On site is divided into on site or wide area categories. 931MHz is used for satellite paging. 26.20MHz; 26.35MHz and 26.50MHz. 459.65MHz and 469.65MHz. Talkback 161MHz to 161.10MHz. Paging receiver types There are three types of paging receivers. The first and simplest is 45.3.5.2 Wide area a tone receiver, which can have a number of different audible tone patterns (usually four or eight) to alert the bearer, but it does not A proposal was put forward for a PTT scheme on 161.175MHz, but display numbers or messages. The bearer takes a predetermined this has been overtaken by the pan-European scheme on u.h.f. action e.g. telephone a given number, or proceed to a location. Since there can be up to eight tones others can indicate alternative actions 45.3.6 Belgium or degree of urgency. The numeric pager has a display of typically 12 or 24 digits 45.3.6.1 On site thereby enabling the caller to send a telephone number that he wishes the bearer to contact. By prior arrangement the numbers sent Frequencies centred on 26MHz and 40MHz, and on 440MHz to can represent a message. The pager is usually able to store these 470MHz. numeric messages in a memory. The third type of pager is the alphanumeric, which has a display of 16, 32, or 80 characters. Between 500 and 5000 characters of 45.3.6.2 Wide area message can be stored in the memory and can be read by scrolling. Unlike the tone and numeric pagers which can be called directly by PTT Semaphoon scheme 147.25MHz (national) and 164.35MHz telephone, the sender must use an alpha keyboard to send alpha (Benelux). messages. Generally wide area paging users send alpha messages Overlay and emergency schemes on mobile frequencies. via an operator at a bureaux service while on site users receive alpha messages from the local paging system operator. 45.3.7 Denmark 45.3.7.1 On site On site paging 29MHz to 31.42MH