Difference between revisions of "DigI:Calculation of Radio link"

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(Calculation of radio propagation)
m (Reverted edits by Josef.Noll (talk) to last revision by Christine.Holst)
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= Location of villages =
 
= Location of villages =
[[File:Villages_TZ.png|500px|right|Selected villages in TZ]]
 
 
Selela, -3.2, 35.9433
 
Selela, -3.2, 35.9433
 
* 2012 census this number has risen to 8.703 people. (5.600 people in 2002)
 
* 2012 census this number has risen to 8.703 people. (5.600 people in 2002)
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Link to Google maps with coordinates:
 
Link to Google maps with coordinates:
* https://www.google.com/maps/d/edit?mid=1pQ8lz0rdBtLV-qydwLFo_sOYmQ8&ll=-5.097120668770035%2C35.31298347656252&z=7
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https://www.google.com/maps/d/edit?mid=1pQ8lz0rdBtLV-qydwLFo_sOYmQ8&ll=-5.097120668770035%2C35.31298347656252&z=7
* https://drive.google.com/open?id=1UknrOcpQMmibNsI87f_g00NBwps&usp=sharing (map with terrain)
+
  
Optional village:
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Optional village in T4
Yaeda Chini -3.866620, 35.198676 (Phase 2)
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Yaeda/@-3.9000836,35.0317979 ??
* 2012 population: 5.402 (slightly lower than in 2002 [https://www.citypopulation.de/php/tanzania-northern-admin.php?adm2id=210315 citypopulation.de])
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* is that location right? see only forest, no village
 
* nearby: Mbulu
 
* nearby: Mbulu
* Yaeda Chini: https://mapcarta.com/34355940
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[[File:Satellite_Yaeda.png|400px|Yaeda village - satellite map]]
 
[[File:Satellite_Yaeda.png|400px|Yaeda village - satellite map]]
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Yaeda Chini: https://mapcarta.com/34355940
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-3.8711, 35.2008
  
 
= Radio connectivity to villages =
 
= Radio connectivity to villages =
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== Calculation of radio propagation ==
 
== Calculation of radio propagation ==
 
There are several tools available to calculate the distance from a given "point of presence (POP)" (''star in the map'') to a village. You just select a town, and assume a mast height of 30 m, and then connect to a village.
 
There are several tools available to calculate the distance from a given "point of presence (POP)" (''star in the map'') to a village. You just select a town, and assume a mast height of 30 m, and then connect to a village.
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Using the [http://www.witelcom.com/witelcom_rev4/radiolink_budget.html Witelcom Radio Link calculator]
  
 
=== Example of Selela ===
 
=== Example of Selela ===

Revision as of 13:21, 4 March 2022

Location of villages

Selela, -3.2, 35.9433

  • 2012 census this number has risen to 8.703 people. (5.600 people in 2002)
  • neighbour Mto+wa+Mbu,+Tanzania/@-3.3770468,35.8765195

Mtera, -7.11145, 35.97072

  • 2016 population: 10.934

Izazi, -7.240498, 35.721481

  • 2016 population: 5.280

Link to Google maps with coordinates: https://www.google.com/maps/d/edit?mid=1pQ8lz0rdBtLV-qydwLFo_sOYmQ8&ll=-5.097120668770035%2C35.31298347656252&z=7

Optional village in T4 Yaeda/@-3.9000836,35.0317979 ??

  • is that location right? see only forest, no village
  • nearby: Mbulu

Yaeda village - satellite map

Yaeda Chini: https://mapcarta.com/34355940

-3.8711, 35.2008

Radio connectivity to villages

Tanzania Broadband Backbone Netowrk Map Courtesy:http://www.nictbb.co.tz/map.php
This pages lists information for connectivity to the National ICT Broadband Backbone Network of Tanzania. More info at http://www.nictbb.co.tz/map.php

Further links to the Rural Telecommunication Project of the government is available from the information page of the Universal Communications Service Access Fund (UCSAF) at http://www.ucsaf.go.tz, with the latest report (August 2016) available from http://www.ucsaf.go.tz/files/publications/attachments/9fc769060924bccfaa274df1ab782ea2.pdf

Calculation of radio propagation

There are several tools available to calculate the distance from a given "point of presence (POP)" (star in the map) to a village. You just select a town, and assume a mast height of 30 m, and then connect to a village.

Using the Witelcom Radio Link calculator

Example of Selela

Step 1: Find the GPS coordinates of the Village

  • -3.204469,35.943328 (for Selela)

Step 2:

  • who are the operators in the region
  • which neighbour villages are connected

Step 3:

  • identify potential fibre termination points (in which villages in the surrounding to I find fibre?)
  • alternatively, identify the towers of the mobile operators in the neighbour villages

Step 4:

  • use the tool for finding the line of sight communications, or minimum relay posts

Example:

  • link from Mto wa Mbu to Selela

Radio Link Mto to Selela.png

  • Radio parameters

Radio Parameters Mto Selela.png

Alternative

https://airlink.ubnt.com/#/ - Airlink Link simulator