provides for the execution of any additional task relating to the assignment and utilization of frequencies in accordance with the procedures provided for that purpose in the Radio Regulations. It is evident from Rules 1438 and 1442 of the Regulations that the Roard will, if so requested by any Administration, investigate cases of alleged violation or non-observance of the Radio Regulations or oí harmful interferente. (2) The telephone conversation between the Chairman and officials of your Department and the discussions with a representative of the United States Mission on 27 March 1990, were not considered to be formal replies to the Board’s telefax of 2 April 1990. You will understand that the Board must keep official records of this case in accordance with RR 1016 so that it can make them available under RRH 58 in case any member of the Union wishes to invoke article 50 of the ITU Convention (Nairobi 1982). (3) Your letter dated 27 February concerning a medium-wave station refers to very different circumstances and could not be considered by the Board as in any way constituting a reply to the Board’s letter of 12 January 1990, / . . . SI21365 English Page 3 Furthermore, the notification form for the registration of Cudjoe Key station submitted with no covering letter - by a representative of the United States Mission to the Chairman - can hardly be called a normal reply I o a formal letter. (4) The exceptional height of the effective antenna with a power of 45.2 dBw means that the distance ñt which the frequency may be re-used is much greater than normal and is not compatible with the standard land practices on VHF and UHF bands. With regard to time-sharing, this is normally achieved by agreement between the administrations concerned. However, in this case, the hours of operation 
**Analysis**
The text appears to be related to the allocation and utilization of frequencies in the context of radio communications. It mentions specific regulations and procedures, as well as technical details about antenna heights and frequency reuse. The tone is formal and bureaucratic, suggesting that it may be related to a government agency or international organization.

**Category**
Transport and communication, Science and technology