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REPEATER STATIONS |
Under Fire Maoist insurgents target
NTC terminals in the remote hills The state-owned Nepal Telecommunications
Corporation (NTC) hired the services of the Royal Nepalese Army nearly two years back
after the Maoist insurgents tried to blow away its repeater stations in their
strongholds.There were no more attacks on NTC towers since then, as the Maoists avoided
confrontation with the army. But as soon as the Maoists started targeting the army last
month, the NTC towers found themselves on the Maoist firing line again. According to technicians, Tulsipur in
mid-western district of Dang, for example, has a telephone exchange, which can provide
telephone lines only within a 7 km radius. Now there is demand of say, 10 telephone lines
in Libang. What the NTC does is collect 10 telephone lines in Tulsipur exchange, bundle
them together in one stream and using the microwave tower, transmit to Libang. In this
process, Tulsipur's tower needs to see the Libang tower directly. This is called Line of
Sight (LOS) propagation of microwave signal.
As we can't see the Libang station
directly from Tulsipur, NTC has to choose one or more places in between Tulsipur and
Libang to place a repeater station, say two places at A and B. Now, Tulsipur's tower sends
signal to repeater station at A and A again re-transmits the signal to B and then B
finally transmits to Libang station. In this process, Tulsipur is in Line of
Sight (LOS) with A, A is in LOS with B and B is in LOS with Libang. If the Maoists blow up
repeater A, then B and Libang will be down completely. In case B is serving some other
districts as well, then all of them will be down too. Radio broadcasts on the AM and short
wave bandwidths do not require LOS. Those signals can bend as they propagate depending on
the type of terrain. These repeater stations do not have any
military significance, unless they are modified to install some military surveillance
system, said experts. However, for the purpose of maintenance, there is always one extra
telephone line on the repeater station so that a technician can talk to another technician
from one station to any other station. The repeater station at Raatmate in Rolpa
is located at a height of 9,000 ft. above sea level and is crucial in providing telephone
connections to three district headquarters, including Rolpa, Rukum and Jajarkot.
"There have been minor damage in the Maoist attacks at this repeater station and we
can maintain it soon," an NTC official told SPOTLIGHT. Installing of a repeater station costs up
to Rs 2 million depending on how many links are going out from it. The NTC has an extended
network of telephone communications in up to 1800 VDCs of the country and has more than
600 terminals to support its MARTS facility. But recent terrorist attacks at the NTC have
not only added to its security expenses, they have also hampered its expansion plans, said
officials. CHINESE SUPPORT Chinese Foreign Minister Tang Jiaxuan
called Prime Minister Sher Bahadur Deuba to reiterate his government's support for the
measures, including the state of emergency, taken by the Nepalese government to maintain
peace and stability in the country. According to the Foreign Ministry, Minister Tang
extended his support during a telephone conversation with Prime Minister and Foreign
Minister Sher Bahadur Deuba Saturday morning. The Chinese Minister made it clear that
neither the Communist Party nor any entity of the Chinese government had any link with the
terrorists of Nepal. Though he did not specify any particular organization, it was obvious
that the senior Chinese official was referring toward the Maoist guerrillas in Nepal whom
the Nepal government has already termed as terrorists. Prime Minister Deuba informed Tang about
the compelling reasons leading to the declaration of the state of emergency despite the
sincere efforts of the government to resolve the problem through peaceful negotiations.
Meanwhile, RAJDHANI daily reported that the Chinese Minister was especially worried about
the use of the word 'Mao' by the CPN (Maoist) of Nepal. Recently, some Indian media
reports had tried to link the Maoist movement in Nepal as being supported by China. By
dissociating itself from the so-called Maoist movement in Nepal, China has stood firmly in
favor of peace, stability and development in Nepal. Earlier, a Chinese foreign ministry
spokeswoman had said the Chinese government was concerned about the events in Nepal and
was watching the latest developments here carefully. The Chinese are also said to be
concerned that no foreign power tries to put Nepal under its so-called 'security umbrella'
taking benefit of the unwarranted developments in Nepal. Unfortunately, the "Maoist
insurgency" has given fertile ground to such ill designs. |
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editor: spotligh@mos.com.np |