IIHR- Hydroscience & Engineering
College of Engineering, The University of Iowa
 

Frequency Band Designations

The table below contains selected IEEE frequency and wavelength designations. Unfortunately, there are several other frequency band designation systems in use with slightly different frequency boundaries, so band designations should be used with caution.

 Frequency Range (GHz)  
  Wavelength (cm)  
  Designation  
1–2
30–15
L
2–4
15–7.5
S
4–8
7.5–3.75
C
8–12
3.75–2.50
X
12–18
2.5–1.67
Ku
18–27
1.67–1.11
K
27–40
1.11–0.75
Ka
40–75
 
V
75–110
 
W
110–300
 
mm
300-3,000
 
micro mm

NEXRAD WSR-88D radars operate in the S-band at 2.7–3 GHz. NCAR's S-POL polarimetric radar operates in the S-band at 2.7–2.9 GHz (peak power > 1 MW). IIHR's Vertically-Pointing Radar operates in the X-band at 9.375 GHz.

Bright Band

The bight band is also called the melting layer, and is the the enhanced layer of radar echo caused by the difference in radar reflectivity of ice and water particles. This echo is interpreted as the delineation on a radar display between frozen and liquid precipitation. For more information, see McGill University's J.S. Marshall Observatory's website.


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This page was last updated on November 19, 2009