Railway route diagrams

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Reference

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Built on piles Built on fill
Parallel to shore "Wharf" "Quay"
Extending out of the shore "Pier" "Jetty"

ТГИ1-50/5

Hazard symbols, ADR/RID, etc

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NFPA 704
safety square
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
2
1
2
NFPA 704
safety square
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuelInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazards (white): no code
1
2
2

Electromagnetic Spectrum chart

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NATO LETTER BAND DESIGNATION BROADCASTING
BAND
DESIGNATION

NEW NOMENCLATURE OLD NOMENCLATURE
BANDFREQUENCY (MHz) BANDFREQUENCY (MHz)
A0 – 250 I100 – 150 Band I
47 – 68 MHz (TV)
Band II
87.5 – 108 MHz (FM)
G150 – 225 Band III
174 – 230 MHz (TV)
B250 – 500 P225 – 390
C500 – 1 000 L390 – 1 550 Band IV
470 – 582 MHz (TV)
Band V
582 – 862 MHz (TV)
D1 000 – 2 000
S1 550 – 3 900
E2 000 – 3 000
F || 3 000 – 4 000
G4 000 – 6 000 C3 900 – 6 200
H6 000 – 8 000 X6 200 – 10 900
I8 000 – 10 000
J10 000 – 20 000 Ku10 900 – 20 000
K20 000 – 40 000 Ka20 000 – 36 000
L40 000 – 60 000 Q36 000 – 46 000
V46 000 – 56 000
M60 000 – 100 000 W56 000 – 100 000
US- MILITARY / SACLANT
N100 000 – 200 000
O100 000 – 200 000

References

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Промрц ПРОМРЧ

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