구차니의 잡동사니 모음

L1 || 1575.42 || Mix of Navigation Message,C/A code and P(Y) code
L2 || 1227.60 || P(Y) code, plus the new L2C code on the Block IIR-M and newer satellites since 2005
L3 || 1381.05 || Used by Nuclear Detonation (NUDET) Detection System Payload (NDS);
                       signals nuclear detonations/high-energy infrared events. Used to enforce nuclear test ban treaties
L4 || 1379.913 || Being studied for additional ionospheric correction
L5 || 1176.45 || Proposed for use as a civilian safety-of-life (SoL) signal*

[링크 : http://en.wikipedia.org/wiki/Gps]

FCC Sec.15.249 Operation within the bands 902–928 MHz, 2400–2483.5 MHz, 5725–5875 MHZ, and 24.0–24.25 GHz.

[링 크 : http://en.wikipedia.org/wiki/Wifi]

Bluetooth uses a radio technology called frequency-hopping spread spectrum, which chops up the data being sent and transmits chunks of it on up to 79 bands of 1 MHz width in the range 2402-2480 MHz.

[링크 : http://en.wikipedia.org/wiki/Bluetooth]

The specific frequency bands originally defined by the UMTS standard are 1885–2025 MHz for the mobile-to-base (uplink) and 2110–2200 MHz for the base-to-mobile (downlink). In the US, 1710–1755 MHz and 2110–2155 MHz will be used instead, as the 1900 MHz band was already utilized.

[링크 : http://en.wikipedia.org/wiki/Umts]