Thai Frequency Allocation Table. Currently NBTC manages the allocation for spectrum in Thailand. From their Thai website I've found several long (250 page in Thai) PDF reports listing the allocations: Latest (Feb 2012); Older: 1 2. If someone knows of a better link or summary chart for Thailand, then please contact me.
US Frequency Allocation Chart - a detailed diagram showing the allocation of spectrum to different services (radio, TV, maritime, etc.) in the United States.
Decibel Calculator from Texas Instruments

Lecture 10, IT, 2013-07-10, 01 - Antenna Gain Lecture 10, IT, 2013-07-10, 02 - Free Space Path Loss Lecture 10, IT, 2013-07-10, 03 - dBW and dBm