1、Page 1 31-01 E Recommendation T/R 31-01 (Stockholm 1977) USE OF THE ABBREVIATIONS QUZ AND PRUDENCE FOR “RESTRICTED WORKING” Recommendation proposed by the “Radiocommunications” Working Group T/WG 3 (R) Text of the Recommendation adopted by lie “Telecommimicatioru” Commission: “The European Conferenc
2、e of Postal and Telecommunications Administrations, considering (a) that the Radio Regulations (Geneva 1979) contain provisions concerning the use of the abbreviations QUZ and PRUDENCE to replace the irregular use of “QUM with care” in radio telegraphy and of “working can be started again with care”
3、 in wireless telephony, (b) that it is necessary to comply strictly with the provisions of number 3151 of the Radio Regulations in order to avoid any misunderstanding in the future, (c) that it is necessary to define “restricted working” by defining the general approach on distress frequencies on wh
4、ich restricted working is allowed, recomietids to CEPT member Administrations 1. 2. 3. 4. 5. 6. 7. to ensure that stations in the maritime mobile service under their control: (a) use abbreviations QUZ and PRUDENCE only on the frequency(ies) on which restricted working can be (b) do not use these abb
5、reviations, in any way whatsoever, on other frequencies which may be used at that time that when it is necessary, in accordance with numbers 3158 and 3159 of the Radio Regulations, to transmit a distress message on a frequency on which restricted working is allowed, this transmission should once aga
6、in impose silence. This silence is to be maintained until the conditions making it possible to use the abbreviations QUZ or PRUDENCE are once again established or until restricted working is once again allowed because of the contents of the message. In this case, the abbreviation QUZ or PRUDENCE mus
7、t appear at the end of the message, that to avoid any misunderstanding the transmission of abbreviations QUZ and PRUDENCE should be accompanied by an indication of the use of other distress frequencies, e.g. on 500 kHz “. QUZ but QRT on 2,182 kHz and/or 156.8 MHz” on 2,182 kHz “, PRUDENCE but SILENC
8、E on 500 kHz and/or 156.8 MHz”, that if the abbreviations QUZ and PRUDENCE are used, the term “restricted working” shall mean that particular care should be exercised before calling on one of the distress frequencies to which the abbreviations QUZ or PRUDENCE are still applicable, and to keep the nu
9、mber of calls to a minimum, that when normal working can start again after a period of restricted working, this should be indicated by the use of abbreviations QUM and SILENCE FINISHED as indicated in No. 3150 of the Radio Regulations, that to avoid any misunderstanding, absolute compliance with the
10、 rules on the correct use of the word PRUDENCE in wireless telephony be encouraged, that when preparing proposals for the work of the future World Administrative Radio Conference on this topic, the need to clarify and dene the provisions of Nos. 3151 to 3155 inclusive of the Radio Regulations should be borne in mind.” carried out in accordance with number 3151 of the Radio Regulations; for distress traffic, Edition of September 15. 1988
