दीर्घ तरंग

स्वतन्त्र विश्वकोश, नेपाली विकिपिडियाबाट
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The दीर्घ तरंग रेडियो प्रसारण पट्टी १४८.५ से २८३.५ kHz (तदनुसार १००० and २००० मीटरको तरंग दैर्घ्यको बीच)को बीच पङने वाला सबै आवृत्तिहरू हुन्छन्।

यो समूह निम्न आवृत्ति (LF) पट्टी-अन्तर्गत आउँछ, जबकि यो पट्टी दीर्घ तरंग प्रसारण भन्दा अधिक आवृत्ति-रेंजसम्म हुन्छ।

दीर्घ तरंग प्रसारण प्रेषित्रहरूको सूची[सम्पादन गर्ने]

(Source: http://de.wikipedia.org/wiki/Langwelle).

आवृत्ति स्टेशन नाम देश स्थिति एरियल प्रकार शक्ति टिप्पणी
153 kHz Deutschlandfunk  जर्मनी Donebach Directional aerial, two guyed steel lattice masts, 363 m high, fed at the top 500 kW Night: 250 kW
Radio Romania  Romania Braşov T-aerial on 2 guyed steel lattice masts with a height of 250 metres 1200 kW  
NRK Finnmark  नर्वे Ingoy Omnidirectional aerial, guyed steel lattice mast of 362 m height, fed at the top 100 kW  
Al Kasirha  अल्जेरिया Bechar Three guyed steel lattice masts 1000 kW  
162 kHz France Inter  फ्रान्स Allouis Two guyed steel lattice masts, height 350 m, fed on the top 2000 kW Time signal phase-modulated
171 kHz Medi 1  Morocco Nador Directional aerial consisting of three guyed steel lattice masts, 380 metres tall 2000 kW  
Radio Rossii  रसिया Bolshakovo near Kaliningrad 150/75 kW  
Radio Rossii  Ukraine Krasne near Lwow 150/75 kW inactive at present
177 kHz Deutschlandradio Kultur  जर्मनी Zehlendorf near Oranienburg Omnidirectional aerial, cage aerial mounted on 359.7 m high guyed mast, triangle aerial on 3 150 m high guyed steel lattice masts 500 kW Since August 29th, 2005 between 2 and 5 a.m. CET DRM-Mode

Non-standard frequency (not divisible by 9)

183 kHz Europe 1  जर्मनी Felsberg Directional aerial, 4 insulated guyed steel lattice masts, heights: 282 m, 280 m, 276 m and 270 m, 2 234 metre tall guyed steel lattice masts, which are insulated against ground as backup antenna 2000 kW French Programme

Non-standard frequency (not divisible by 9)

189 kHz RÚV  आइसल्याण्ड Gufuskalar near Hellissandur Slight oval bi-directivity aerial, top loaded parallel connected triangular loops, mast as a common member, all guys insulated except two radiating diametrically opposed grounded top guys, loops closed by copper straps in the ground from two conducting guy grounding points to base of the guyed steel lattice mast insulated against ground, height 412m 300 kW RÚV national programs 1 and 2 Rás 1 and Rás 2
RAI  इटाली Caltanissetta Omnidirectional aerial, guyed steel lattice mast, height 282 m 10 kW Inactive since August 2004
198 kHz BBC Radio 4  संयुक्त अधिराज्य Droitwich T-aerial on 2 guyed steel lattice masts insulated against ground with a height of 213 metres 500 kW Relays BBC World Service after the end of its own programmes.
BBC Radio 4  संयुक्त अधिराज्य Burghead Omnidirectional aerial, guyed steel lattice mast 50 kW  
BBC Radio 4  संयुक्त अधिराज्य Westerglen Omnidirectional aerial, guyed steel lattice mast, height 152 m 50 kW  
Polskie Radio Parlament/Program 1  पोल्याण्ड Raszyn Omnidirectional aerial, guyed steel lattice mast insulated against ground, 335 m high 500 kW Only active during the daytime
Radio Majak  रसिया Sankt Petersburg - Olgino Omnidirectional aerial, 205 m high guyed steel lattice mast 150 kW
207 kHz RÚV  आइसल्याण्ड Eiðar near Egilsstaðir Omnidirectional aerial, steel lattice mast insulated against ground, height 220m 100 kW RÚV national programs 1 and 2 Rás 1 and Rás 2
Deutschlandfunk  जर्मनी Aholming Directional aerial, two guyed steel lattice masts, 265 m high, fed at the top 500 kW Night: 250 kW
216 kHz Radio Monte Carlo  Monaco Roumoules Directional aerial, 3 300 metre high guyed steel lattice masts, 330 metre high guyed steel lattice mast as backup aerial 1200 kW Transmitter site exterritorial, exclave of Monaco
225 kHz Polskie Radio Program 1  पोल्याण्ड Solec Kujawski Directional aerial, 2 guyed radio masts fed on the top, heights 330 m and 289 m 1000 kW Earlier transmitter site Konstantynów
234 kHz RTL  Luxembourg Beidweiler Directional aerial, 3 guyed grounded steel lattice masts, 290 m high, with vertical cage aerials 2000 kW Spare transmitter site Junglinster
Radio 1  रसिया Krasny Bor transmitter Omnidirectional aerial, 271.5 metres tall guyed mast with cage antenna 1200 kW May be inactive at present
243 kHz Danmarks Radio  Denmark Kalundborg Alexanderson aerial, carried from 2 118 Meter high free-standing steel lattice towers 300 kW Stop 15 February 2007
252 kHz RTA Algier  अल्जेरिया Tipaza Omnidirectional aerial, single guyed lattice steel mast 1500 kW French programme; during night-time half transmitter-power
RTÉ Radio 1  आयरल्याण्ड Clarkestown Omnidirectional aerial, guyed steel lattice mast, insulated against ground, height 248 m 500 kW Earlier used by Atlantic 252 and TeamTalk 252, decreases power at night to 100 kW, one website reported the callsign of this station to be EIRE
261 kHz Transmitter Burg  जर्मनी Burg Omnidirectional aerial, cage aerial on 324 m high guyed, grounded steel lattice mast, 210 m high steel tube mast, insulated against ground 200 kW Inactive at the moment, formerly used by Radio Wolga and Radioropa Info
Radio Rossii  रसिया Taldom Omnidirectional aerial, central mast, 275 metre tall, surrounded by 5 guyed masts on a circle around 2500 kW Most powerful transmitter in the world
Radio Horizont  Bulgaria Vakarel One of the few Blaw-Knox Towers in Europe, 215m high 75 kW
270 kHz ČRO 1 - Radiožurnál  चेक गणतन्त्र Topolna Directional aerial (maximum of radiation in East-West direction), two grounded 257 m high guyed steel lattice mast with cage aerials 500 kW  
279 kHz Musicmann279  Isle of Man ± 5 km off Ramsey Crossed field antenna 500 kW Tests originally planned to begin in early 2005 pending a summer 2005 launch; as of 2006, considerable uncertainty as to actual launch date; as of 2007, key personnel have resigned and company's future is uncertain. In October 2007 the Company's web sites disappeared.
Belaruskaje Radyjo 1 (BR1)  Belarus Sasnovy 500 kW  
Radio Mayak (RUS)  रसिया Yekaterinburg Omnidirectional aerial, guyed steel lattice mast of 256 m height, fed at the top 50 kW  



Height diagram of the antenna towers and antenna masts of longwave broadcasting stations

रेडियो वर्णक्रम
अत्यधिक निम्न आवृत्ति (ELF) परम निम्न आवृत्ति (SLF) अत्यन्त निम्न आवृत्ति (ULF) अति निम्न आवृत्ति (VLF) निम्न आवृत्ति (LF) मध्यम आवृत्ति (MF) उच्चावृत्ति (HF) अत्योच्चावृत्ति (VHF) अत्यन्त उच्चावृत्ति (UHF) परम उच्चावृत्ति (SHF) अत्यधिक उच्चावृत्ति (EHF)
3 Hz 30 Hz 300 Hz 3 किलो हर्ट्ज 30 किलो हर्ट्ज 300 किलो हर्ट्ज 3 मैगा हर्ट्ज 30 मैगा हर्ट्ज 300 मैगा हर्ट्ज 3 गीगा हर्ट्ज 30 गीगा हर्ट्ज
30 Hz 300 Hz 3 किलो हर्ट्ज 30 किलो हर्ट्ज 300 किलो हर्ट्ज 3 मैगा हर्ट्ज 30 मैगा हर्ट्ज 300 मैगा हर्ट्ज 3 गीगा हर्ट्ज 30 गीगा हर्ट्ज 300 गीगा हर्ट्ज