दीर्घ तरंग

The दीर्घ तरंग  रेडियो प्रसारण पट्टी 148.5 से 283.5 kHz (तदनुसार 1000 and 2000 मीटर के तरंग दैर्घ्य के बीच) के बीच पङने वाली सभी आवृत्तियाँ होतीं हैं।

यह समूह निम्न आवृत्ति (LF) पट्टी के अन्तर्गत आता है, जबकि यह पट्टी दीर्घ तरंग प्रसारण से अधिक आवृत्ति-रेंज तक होती है।

 दीर्घ तरंग प्रसारण प्रेषित्रों की सूची 

(Source: https://web.archive.org/web/20080219142045/http://de.wikipedia.org/wiki/Langwelle)। 
 आवृत्ति स्टेशन नाम देश स्थिति एरियल प्रकार शक्ति टिप्पणी 153 kHz Deutschlandfunk  Donebach Directional aerial, two guyed steel lattice masts, 363 m high, fed at the top 500 kW Night: 250 kW Radio Romania  Braşov T-aerial on 2 guyed steel lattice masts with a height of 250 metres 1200 kW   NRK Finnmark  Ingoy Omnidirectional aerial, guyed steel lattice mast of 362 m height, fed at the top 100 kW   Al Kasirha  Bechar Three guyed steel lattice masts 1000 kW   162 kHz France Inter  Allouis Two guyed steel lattice masts, height 350 m, fed on the top 2000 kW Time signal phase-modulated 171 kHz Medi 1  Nador Directional aerial consisting of three guyed steel lattice masts, 380 metres tall 2000 kW   Radio Rossii  Bolshakovo near Kaliningrad 150/75 kW   Radio Rossii  Krasne near Lwow 150/75 kW inactive at present 177 kHz Deutschlandradio Kultur  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  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  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  Caltanissetta Omnidirectional aerial, guyed steel lattice mast, height 282 m 10 kW Inactive since August 2004 198 kHz BBC Radio 4  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  Burghead Omnidirectional aerial, guyed steel lattice mast 50 kW   BBC Radio 4  Westerglen Omnidirectional aerial, guyed steel lattice mast, height 152 m 50 kW   Polskie Radio Parlament/Program 1  Raszyn Omnidirectional aerial, guyed steel lattice mast insulated against ground, 335 m high 500 kW Only active during the daytime Radio Majak  Sankt Petersburg - Olgino Omnidirectional aerial, 205 m high guyed steel lattice mast 150 kW  207 kHz RÚV  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  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  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  Solec Kujawski Directional aerial, 2 guyed radio masts fed on the top, heights 330 m and 289 m 1000 kW Earlier transmitter site Konstantynów234 kHz RTL  Beidweiler Directional aerial, 3 guyed grounded steel lattice masts, 290 m high, with vertical cage aerials 2000 kW Spare transmitter site Junglinster Radio 1  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  Kalundborg Alexanderson aerial, carried from 2 118 Meter high free-standing steel lattice towers 300 kW  Stop 15 फ़रवरी 2007 252 kHz RTA Algier  Tipaza Omnidirectional aerial, single guyed lattice steel mast 1500 kW French programme; during night-time half transmitter-power RTÉ Radio 1  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  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  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  Vakarel One of the few Blaw-Knox Towers in Europe, 215m high 75 kW  270 kHz ČRO 1 - Radiožurnál  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  ± 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)  Sasnovy 500 kW   Radio Mayak (RUS)  Yekaterinburg Omnidirectional aerial, guyed steel lattice mast of 256 m height, fed at the top 50 kW  

800px|thumb|Height diagram of the antenna towers and antenna masts of longwave broadcasting stations

श्रेणी:रेडियो
श्रेणी:वर्णक्रम
श्रेणी:विज्ञान
श्रेणी:विद्युत चुम्बकीय वर्णक्रम