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Network Map

Page history last edited by David Samways 5 years, 6 months ago Saved with comment

 

 

 

 

January 2015

 

The network map for this project has been totally reviewed having found that it extended into the adjacent country Cameroon.  In addition, thanks mainly to Barrie Horner, Doug Kennett and John Wilson, more detail has been added.  There are still a couple problem areas (involving the Kafanchan station, and some in Cameroon) but hopefully these can be resolved in the near future.

 

The network is illustrated in the following two maps.  The first is shown based on the original Shell maps of 1960 issued to field personnel by the Company.  It is quite surprising the level of detail these maps show.  The second map is courtesy of Google® because similar maps were not available.           

 

Details of each Terminal and Repeater showing their manning status and service areas can be viewed here.  The personnel at these stations, based in individuals memories, is listed here.

 

 

 

 

 

Further information

 

The following listing has been prepared by John Wilson with input from Martin Hinton.

 

         
 

 

Links

 

Hop distance (miles)

 

Comments

 
         
  Westward route from Enugu      
         
  Enugu – Aboh 7.7 To get from Enugu town up to high ground.  Resident engineers at Enugu.  
  Aboh – Onitsha 48 Resident Marconi engineer at Onitsha  
  Onitsha – Issele-Uku 21 To get across the River Niger.  Serviced from Benin.  Resident Marconi engineer at Benin.  
  Issele-Uku – Agbor 22.5 Serviced from Benin  
  Agbor – Ugonoba 24 Serviced from Benin  
  Ugonoba – Benin City 16 To drop down from high ground into Benin.  Serviced from Benin.  
  Benin – Oluku 10.5 To get back to high ground. Serviced  from Benin  
  Oluku – Idanre 61 Long hop made possible by location at Idanre of repeater equipment on very high rock formation.  Serviced from Akure by resident Marconi engineer.  
  Idanre – Ife 48 Serviced from Ibadan  
  Ife – Ibadan 46 Resident Marconi engineers at Ibadan  
  Ibadan – Ipara   Before JW time in Nigeria. Replaced by GEC 2.4GHz link  
  Ipara – Lagos   Before JW time in Nigeria. Replaced by GEC 2.4GHz link  
         
  Northward route from Enugu      
         
  Enugu – Aboh 7.7 To get from Enugu town up to high ground.  Resident engineers at Enugu.   
  Aboh – Idah 64 Serviced from Enugu  
  Idah – Agbaja (Lokoja) 61 To cross the River Niger.  Resident Marconi engineer at Lokoja.  
  Agbaja – Kafanchan   ???Very long hop.  Was there a repeater between Agbaja and Kafanchan?  
  Kafanchan – Kaduna 90 ?    
         
         
  Northward route from Ibadan      
         
  Ibadan – Oyo 35 Serviced from Ibadan.  Resident engineers at Ibadan.  
  Oyo – Ogbomosho 29 Serviced from Ibadan.  
  Ogbomosho – Ilorin 33.5 Resident Marconi engineer at Ilorin  
  Ilorin – Lafiagi 67 Serviced from ??  
  Lafiagi – Kataeregi 67 Serviced from ??  
  Kataeregi – Minna 24 Serviced from ??  
  Minna – Kaduna 90 ?    
         
  Additional comments by John Wilson:    
         
  The Westward route from Enugu is accurate from my own experience, having carried out work at all of the locations mentioned, but from Ogbomosho North and Agbaja (Lokoja) North I am less certain.  The 90 mile hops to Kaduna seem unusual but I don’t fancy working out the path attenuation at 190 MHz without going back 50 years to my work with Pye Telecom and Marconi.  Perhaps 90 miles was attainable given the high towers and high gain stacked Yagi arrays we used.  
         

 

 

 

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