63 STAT.] MIULTILATERAI-TELECOMMUNICATIONS-OCT. 2, 1947 (App. 15 RtH (9) According to its estimate of the accuracy of the observation, the radio direction-finding station classifies the bearing in one of the three following classes: Class A: bearings which the operator may reason- ably consider to be accurate to within ± 2° (two degrees); Class B: bearings which the operator may reason- ably consider to be accurate to within ± 5° (five degrees); Class C: bearings which the operator may reason- ably consider to be accurate to within + 10° (ten degrees). §6. To obtain a position determined by two or more radio direction-findingstations organized as a group. (1) If the calling station wishes to be informed of its position by a group of radio direction-finding stations, it calls the control station as is indicated in § 6 (1) above, and requests a position by means of the appropriate service abbre- viation. (2) The control station replies to the call and, when the radio direction-finding stations are ready, requests, by means of the appropriate service abbreviation, the calling station to transmit. When the position has been determined, it is trans- mitted by the control station to the calling station in the form indicated in § 5 (6). (3) According to its estimate of the accuracy of the observation, the control station classifies the position in one of the three following classes: Class A: positions which the operator may reason- ably expect to be accurate to within 6 nautical miles; Class B: positions which the operator may reason- ably expect to be accurate to within 20 nautical miles; Class C: positions which the operator may reason- ably expect to be accurate to within 50 nautical miles. 2105
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