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The symbol dBrn or dB(rn) is an abbreviation for decibels above reference noise.. Weighted noise power in dB is referred to 1.0 picowatt.Thus, 0 dBrn = -90 dBm.Use of 144 line, 144-receiver, or C-message weighting, or flat weighting, can be indicated in parentheses.
Many different levels with a number of different weightings are in current use, and care must be taken to ensure that the proper parameters are stated. Specific ones include: dBa , dBa(F1A), dBa(HA1), dBa0, dBm , dBm(psoph), dBm0 , dBrn , dBrnC , dBrnC0, dBrn(f 1 -f 2 ), dBrn(144-line), dBx.
n.o.s. = not otherwise specified meaning a collective entry to which substances, mixtures, solutions or articles may be assigned if a) they are not mentioned by name in 3.2 Dangerous Goods List AND b) they exhibit chemical, physical and/or dangerous properties corresponding to the Class, classification code, packing group and the name and description of the n.o.s. entry [2]
n.o.s. = not otherwise specified meaning a collective entry to which substances, mixtures, solutions or articles may be assigned if a) they are not mentioned by name in 3.2 Dangerous Goods List AND b) they exhibit chemical, physical and/or dangerous properties corresponding to the Class, classification code, packing group and the name and description of the n.o.s. entry [4]
Wikidata item; Appearance. move to sidebar hide. UN numbers from UN2001 to ... UN Number Class Proper Shipping Name UN 2001: 4.1: Cobalt naphthenates, powder
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