Help


Below are the main features you will find after you have successfully logged-in and land in the system main page:

  1. The map: This feature occupies the largest space on this page, the tick boxes on the top right hand side of map allow you to change different view options. You can also adjust different zoom levels by using the slider bar on the left hand side of the map. Additionally you can also adjust different pan levels by clicking and drag at any desired point on the map.
  2. The info window: By default the info window (a rectangular box) displayed on the map will show a default location in latitude and longitude coordinates. However, the info window will ask you to drag the marker to your desired location (this can be the location of a white space device) or it will ask you to enter your desired location coordinates on the form located at the right most side of the page. Either of the two methods will allow the database to do some calculations and output the following on the info window, the (1) amount of available free TVWS channels,(2) amount and size of the contiguous bandwidth.
  3. The signal strength power level legend; This is a colourful feature located at the top left most part of the map, it basically, gives hint on different TV station signal strength power levels found in their contours.
  4. TV stations signal strength contours: These features displays the signal strengths of each station of interest.
  5. The coordinates form: This feature is characterised by two rectangular-like boxes located on the top right most area of the page. Here you have an option of entering your desired location (latitude and longitude).
  6. The criteria: The feature is characterised by forms having two options namely; (1) selection of a desired propagation model, (2) selection of a desired height above average terrain (HAAT) of the white space device. Currently, the database supports white space devices with transmitting power (EIRP) ranging from 40 mW to 4 Watt. Ultimately, you will be required to press the button written in short “search ch” (meaning search for available TVWS channels).
  7. The channel table: This feature is characterised by two main parts; (1) the very high frequency (VHF) table which displays channels in little boxes starting from number 4 to number 13 (channel number 12 is excluded), (2) the ultra high frequency (UHF) table which displays channels in little boxes starting from number 21 to number 68. After performing the channel computation, the box(es) with green colour show available white space channels, while the white boxes mean that these channels are not available for TVWS network operations in that particular area.
  8. The site details button: This feature is located right below the map, once pressed it will give a detailed information of all TV stations where the free TVWS channels are found.