Source edition 1965. Please read the Introduction to find
out about this dictionary and our plans for it. Caution, many entries have not
been updated since the 1965 edition.
Greek symbols may not appear correctly in some browsers. For example
a gamma may appear as γ.
and
angstroms (nm) | Line due to | |
A | 7594 | Telluric oxygen |
B | 6867 | Telluric oxygen |
C | 6563 | hydrogen, H |
D1 | 5896 | sodium |
D2 | 5890 | sodium |
D3 | 5876 | helium |
E | 5270 | iron and calcium |
b1 | 5184 | magnesium |
F | 4861 | hydrogen, H |
G | 4308 | iron (and calcium) |
H | 3968 | calcium |
K | 3934 | calcium |
Band number | Frequency range | Metric subdivision waves | Atlanctic City frequency subdivision | ||
---|---|---|---|---|---|
kc | |||||
4 | 3- | 30 | Myriametric | Very-low | VLF |
5 | 30- | 300 | Kilometric | Low | LF |
6 | 300- | 3,000 | Hectometric | Medium | MF |
7 | 3,000- | 30,000 | Decametric | High | HF |
mc | |||||
8 | 30- | 300 | Metric | Very-high | VHF |
9 | 300- | 3,000 | Decimetric | Ultra-high | UHF |
10 | 3,000- | 30,000 | Centimetric | Super-high | SHF |
11 | 30,000- | 300,000 | Millimetric | Extremely high | EHF |
12 | 300,000- | 3,000,000 | Decimillimetric | -- | -- |
|
|
|
P-band | 0.225 to 0.39 | 140 to 76.9 |
L-band | 0.39 to 1.55 | 76.9 to 19.3 |
S-band | 1.55 to 5.20 | 19.3 to 5.77 |
X-band | 5.20 to 10.90 | 5.77 to 2.75 |
K-band | 10.90 to 36.00 | 2.75 to 0.834 |
Q-band | 36.00 to 46.00 | 0.834 to 0.652 |
V-band | 46.00 to 56.00 | 0.652 to 0.536 |