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Topic: Transmitter Redruth

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	Transmitter Coverage & Service Area Maps and Pixel Plots
		Some ILR transmitters have had modest power increases and while this will give a slightly wider coverage area, the contours will not have changed significantly in many cases.
		Maybe you have a transmitter in the UK that you would like a plot done for.
		The BBC national radio transmitter coverage maps are listed by name, so just click on the one that you want to see the map.
	www.arar93.dsl.pipex.com /mds975/txmaps/txmaps.html (370 words)

	C:\PROGRAM FILES\SOFTQUAD\HOTMETAL PRO\gifs\ch5tg000.htm
		Neighbouring transmitters use different frequencies to prevent interference and the channels have been reused up to 100 times within the country to achieve satisfactory coverage.
		Before transmitters can begin broadcasting Channel 5 programmes on UHF channel 37, it must be demonstrated that 90% of all households receiving signals on this frequency will be free from potential interference.
		Similarly, if a Channel 5 transmitter is causing patterning on a VCR playback picture, then a temporary solution is to unplug the aerial lead from the VCR.
	ourworld.compuserve.com /homepages/TVEngineers/chguide.htm (936 words)

	Aerial Issues \| Articles \| Digital Terrestrial TV Reception
		Transmitter output might be restricted in one or more directions, in order to prevent interference to another service.
		In the good old days, all channels from a particular transmitter were within a group, so a ‘grouped’ aerial, with less bandwidth but more gain and directivity, could be used.
		When the transmitter direction is roughly at right angles to the wall the installation is very neat, protruding only about 300mm.
	www.wrightsaerials.tv /digitalterrtvrecep.htm (7277 words)

	[No title]
		However, the Dusheti transmitters are often silent due to the ongoing energy crisis in the country: To Oslo: 0500-0530 Russian, 0530-0600 English, 0600-0630 German on 11805.
		The LW transmitter on 189 kHz is too expensive to operate daily and it is now only used on special occasions requiring nationwide coverage such as every Monday at 0600 for the weekly address to the nation by president Edward Shevardnadze.
		More information is on their website at: http://www.feba.org.uk/schedule FEBA Radio may have to move its transmitter site due to a government land reclamation project; tests are being done to determine if FEBA can still get out its shortwave transmissions without harm to the people who will live on the reclaimed land.
	www.worldofradio.com /dxld2106.txt (15167 words)

	Frequency Finder UK - Radio 1 transmission history
		Prior to launch additional Radio 1 transmitters were built for the Midlands; South Wales, Avon & Somerset; Southampton & Portsmouth; the Brighton area; the Norwich area; and Hull, all on 1214 kHz, or 247 metres as radios were calibrated in wavelengths on AM then.
		The transmitters serving the North, Midlands and South East were tripled in power and new high power transmitters introduced for the South West and the North East.
		Four transmitters were then ceremonially switched on through the day: Wrotham for the South East (replacing Crystal Palace), Tacolneston for Norfolk and Suffolk, Sandale for North East Cumbria and South West Scotland and Blaenplywf for Ceredigion and SW Gwynedd.
	mysite.wanadoo-members.co.uk /freq_find/r1_transmission.html (2137 words)

	Channel 5
		Viewers living closer to the transmitter would probably be able to swap their Group A aerial for a Group B aerial (yellow) which operates on UHF 39-53, for a better picture on C5 and a negligible reduction in quality on the other channels.
		This transmitter will add over 133 000 homes to the coverage, most of which will be able to receive the service on their existing group B aerial.
		However the transmitter is the opposite polarity from the others and so most homes will need to adjust their aerial if it is internal, or fit an additional aerial.
	625.uk.com /channel5 (7954 words)

	405 Alive - Information - A List of VHF 405-Line Transmitters
		All transmitters other than main stations are indented to the right.
		EMI Ltd had a test transmitter and antenna similar to Alexandra Palace’s at Hayes, which was used for tests before Alexandra Palace opened.
		The frequency of Baird’s transmitter was stated in October 1933 as 6.25 metres, i.e.
	www.bvws.org.uk /405alive/info/tx_list.html (1116 words)

	List of masts - Enpsychlopedia (Site not responding. Last check: 2007-10-06)
		Masts of the VLF transmitter Rugby in England
		For high power transmitters in the MW range, masts with lengths around half of the radiated wavelength are preferred because they focus the radiated power better to the ground than constructions with heights of quarter wavelengths, which are preferred of economical reasons for low power medium wave transmitters.
		For longwave transmitters, however, the construction of masts with heights of half-wave wavelength is, because of economical reasons (and perhaps problems with the flight safety), in most cases impossible.
	www.grohol.com /psypsych/List_of_masts (1276 words)

	Radio Rewind - Radio 1 History - Transmitters (Site not responding. Last check: 2007-10-06)
		The transmission wavelength of Radio One was moved from 247m (1214 kHz) to 275 and 285m (1053 and 1089KHz) in November 1978 as part of a plan for BBC AM broadcasting in order to improve national AM reception, and to conform with the 1975 Geneva Conference on radio wavelengths.
		Droitwich (Worcs) 1053 and Brookmans Park (London) 1089 transmitter powers were increased dramatically on the new frequencies, by a factor of 5 and 4 respectively.
		In 1987 a frequency range of 97-99Mhz was allocated as the UK Police relay transmitters were moved from the 100mHz FM Frequency.
	www.radiorewind.co.uk /Transmitter.htm (847 words)

	JOHN BAILEY'S HOME PAGE..Issue 2 March 1998. (Site not responding. Last check: 2007-10-06)
		Even when the transmitter your aerial is pointing at is transmitting Channel 5 you may still be getting a poor picture.
		If the picture quality is only slightly down on the quality of the other channels, Channel 5 transmission could be at a lower power level and you may be able to improve the picture by installing a low gain aerial amplifier.
		This has come about because the new broadcasting companies, Channel 4 as well as 5, have been compelled to use frequencies outside the group the transmitter was originally scheduled to serve as there are no other analogy frequencies available.
	www.btinternet.com /~lidan/jbhome2.htm (331 words)

	Radio in Cornwall
		Plymouth Sound first went to air on 19-May-1975, and although targetted exclusively at the city, the signal from the AM transmitter could be received far and wide, across most of the Eastern half of Cornwall, and along most of the south coast until you got to Lizard Point.
		These days, they still provide 24 hours of local programming most days, except for 5 hours on Sundays from 2pm to 7pm, which is up on their initial 3 hours a week on Sundays, but nowadays they have presenters for 20 of those 24 hours on weekedays.
		Whilst some of the ideas were great, others weren't and the presentation was at times just a little too relaxed and not professional enough, but all in all, the station actually doesn't sound bad, and just might get another RSL licence before the Radio Authority would consider applications for a "community" licence in Falmouth.
	www.transdiffusion.org /rmc/features/kernow.asp (1951 words)

	DX Radio - 2003 DX News
		With BBC R Shropshire having opened two new FM transmitters recently, the decision was made to switch 1584 kHz to carry BBC Hereford and Worcester so that listeners in North Herefordshire would enjoy better reception.
		It was several years ago that the Hereford AM transmitter on 819 kHz was closed.
		A possible date for the changeover is March 31, with a "retune" loop being broadcast for 24 hours prior to the switch.
	www.dxradio.co.uk /dx2003.html (1228 words)

	British DX Club - Title
		The Second World War interrupted the service but afterwards transmissions resumed and transmitter coverage across the UK was extended.
		Reception of the Crystal Palace transmitter (and its Alexandra Palace predecessor) on Channel 1 were renowned for their world-wide coverage during times of high sunspot activity.
		Most main transmitters used vertical polarisation and most relays used horizontal, although as is common today at UHF good use was made of either to help limit the amount of interference from other transmitters on the same channel.
	www.users.waitrose.com /~bdxc/lists/405.html (578 words)

	Lacuna Systems Limited - SatMeter instructions
		A map of zones and transmitters in each is on the back of this leaflet.
		For Digital TV transmitters the meter will indicate if the carrier to noise ratio level is adequate for successful reception by showing PASS.
		The 6-pin Mini-Din socket is used with the computer interface download lead to program new transmitter data into the meter and the other is the charger jack socket for both the mains charger and the In-car charging lead.
	lacunasystems.co.uk /TM2Instruct.htm (1052 words)

	slope soaring transmitter ideas?
		If you took the idea of a transmitter hardcase and carried it over to a backback, I think you'd have a seller (I'd buy one anyway) I don't sew so I would have to wait for someone to design and produce it.
		Add a pocket to carry your transmitter hand warmer and extra TX/RX packs for winter soaring and a Camelback system for liquid replenishment and you have the ultimate carrying case for slopes.
		this is the transmitter from a Firebird Outlaw, not a bad size and along the lines of a small compact shape, tho i was also looking at using a Playstation game pad right as it is, the gimbals would be great.
	www.rcuniverse.com /forum/slope_soaring_transmitter_ideas%3F/m_2068325/tm.htm (1503 words)

	Re: Transmitter design
		Our transmitters look great because they are so smooth and symmetrical, but I think this is for sales and not human factors.
		Make the transmitter "lop-sided," for lack of a better word, so all the switches can be on the left side.
		I remember older JR transmitters had non-exclusive roll buttons that were much more flexible in their use.
	www.rcuniverse.com /forum/m_116457/mpage_2/tm.htm (3560 words)

	Aircheck UK
		There are 43 transmitters serving the British Isles - between 99.9 and 101.9 - six dotted around the coast of Wales, two in Northern Ireland, six in Scotland, one on the Isle Of Man, one on the Isle of Wight, and the remaining 27 across England.
		The 1970s saw the island's ministers making repeated requests for increases in transmitter power, but they were told that this could not be possible due to the fact that, with the newly established commercial mainland operators, such an increase could steal listeners away.
		The objector's petition asked the court to quash the 279 licence claiming that any transmitter complying with frequency allocation must be close to the Point of Ayre and that this would affect him.
	www.geocities.com /thehotw/aircheck_UKNational.htm (9911 words)

	Broadcasting House, London, Control Room - memories by Roy Hayward
		Someone on high was telling the SCRE that a number of transmitters in a certain area were to be shut down as they might provide a navigational aid to incoming enemy bombers.
		SCRE London." (Or whatever transmitter was required to be shut down.) The LT operator would ring the land line to Brookman's Park control room and pass the message ending with the exact time it was sent.
		Whenever there was a fault in any of the transmitters throughout the country which caused it to cease radiating, it was the routine for the senior engineer at the station to send a priority service message to SCRE London (which was, presumably forwarded on to the Controller Engineering).
	www.btinternet.com /~roger.beckwith/bh/cr62/cr62_5.htm (4559 words)

	DAB TII WorldWide
		Three transmitter sites are known to broadcast the ensembles of more than one Land: Hohe Wurzel, Heidelberg Königstuhl and Ulm Kuhberg have a TII value for each Land served.
		A list of DAB transmitters, their frequencies and ERPs is maintained by Teracom AB.
		Teracom, the transmitter network operator in Sweden, announced at the beginning of 2002 that it was to scale back DAB transmissions.
	www.wohnort.demon.co.uk /DAB/tii.html (525 words)

	In the bicycle tracks of Sherlock Holmes - part 3
		We watched the Poldhu Hotel, build around 1900 to house the technicians, radio-operators and engineers who came to work together with Guglielmo Marconi, who was the inventive 27 year old Italian scientist who was the first to send a radio signal across the Atlantic.
		Since the antenna masts were destroyed by the wind all the time, they used balloons and kites to carry the transmitter and receiver equipment.
		In Mullion we passed the old vicarage and visited the cute little stone church from the 14th century with the most lovely, wooden carvings everywhere inside and we also took a tour round the churchyard.
	www.gfy.ku.dk /~ams/sh/england/england3.html (1919 words)

	On This Day In Broadcasting - May
		Two new BBC television transmitters opened, Pontop Pike on channel 5 and Glencairn on channel 1.
		ITV began in the North of England, from the Winter Hill transmitter on channel 9, with Granada operating the weekday franchise.
		The new ITA franchise holder for Wales and the West of England, Harlech, began broadcasting from the St Hilary, Presely, Arfon, Moel-y-Parc, Bala and Bath transmitters.
	www.tinsleyviaduct.com /broadcasting/may.html (440 words)

	On This Day In Broadcasting - February
		The BBC 405-line transmitter at Redruth opened, on channel 1.
		The BBC 405-line transmitter at Fort William opened on channel 5.
		The ITA 405-line transmitter at Ffestiniog opened, carrying Harlech Television on channel 13.
	www.tinsleyviaduct.com /broadcasting/february.html (489 words)

	Telly Aerial :: Digital Terrestrial Television in the UK and Europe (Site not responding. Last check: 2007-10-06)
		If all the multiplexes on your transmitter are coloured pink then you are in luck - all the broadcasts are in band, and provided the aerial is in good condition and you have a strong enough signal you should be fine.
		Certain Transmitters such as Winter Hill brodcast on different frequencies in different directions.
		For simplicity these are listed on a second line as "transmitter B" and the existing analogue and five groups are also shown.
	www.kswindells.34sp.com /freeview/ta.php/out_of_band (394 words)

	Digital Spy Forums - View Single Post - MUX B problems
		However, I can get all channels all the time with the exception of those on Mux B. Most of the time it just says 'no signal' and other times (on BBC 4 for example) I get sound and pictures but with lots of break-up.
		I use the Redruth transmitter which is about four miles away as the crow flies.
		I've just checked the aerial groups for Redruth and it is group B for both ATT and DTT, so that wouldn't account for loss of or poor quality channels.
	forum.digitalspy.co.uk /board/showpost.php?s=bf84afff1a06e98bc88d0a10aaa88142&p=2325068&postcount=3 (238 words)

	mb21 - ether.net - UK Transmitter Info and Gallery (Site not responding. Last check: 2007-10-06)
		The new mixed polarization arrays are much bulkier affairs which meant that the BBC had to construct new masts at some sites since the old masts could not carry the additional weight of these larger antennas.
		ILR and INR at Redruth and ILR at Caradon Hill.
		The aerial in figure 24 is the same as in figure 22A, but it has a crossed reflector element to the rear to provide, in this case, a directional signal to the south-east, while reducing the signal transmitted to the north and west where there is another ILR station on an immediately adjacent frequency.
	tx.mb21.co.uk /features/recognition/vhf-fm.asp (935 words)

	UK DVB Scan and Channel Lists
		Digital television transmitters in the UK generally have 6 multiplexes; each multiplex caries a group of channels.
		A scan list gives frequencies and basic parameters for all the multiplexes on a specific transmitter.
		The scan program (available as part of the linuxtv-dvb-apps package at http://www.linuxtv.org) takes this list and scans all the frequencies in it to produce a list of channel settings for that transmitter, which can then be used with media players such as xine or mplayer.
	linux.mikeasoft.com /dvb.php (112 words)

	Aircheck UK
		These days, they still provide 24 hours of local programming most days, except for 5 hours on Sundays from 2pm to 7pm, which is up on their initial 3 hours a week on Sundays, but nowadays they have presenters for 20 of those 24 hours on weekdays.
		Critics felt that the new commercial station wasn't commercial enough, appealing to a wide demographic of 25-54 years olds rather than the younger element - but with the lack of a competitive nature to the local radio scene, others saw this as a valuable service to the majority.
		in the Summer of 2004 using three transmitters at Plympton, Redruth and Caradon Hill, which should initially provide noise-limited outdoor coverage to 72.6% of the adult population of the main broadcast target area.
	www.geocities.com /thehotw/aircheck_UKCornwall.htm (3802 words)

	Interference Problems
		But their use alone achieved coverage of less than 30% of the population, which is not sufficient to make the service commercially viable.
		The government therefore approved the use of UHF channel 37 at nine transmitter sites - Croydon, Lichfield, Emley Moor, Blackhill, Mendip, Redruth, Preseley, Cambret Hill, Black Mountain - across the UK.
		Before transmitters could begin broadcasting Channel 5 programmes on UHF channel 37, it had to be demonstrated that 90% of all households receiving signals on this frequency are free from potential interference.
	www.suffolkelectronics.co.uk /interference_problems.htm (582 words)

	Aircheck UK
		Four transmitters were installed ranging from 1KW to 100watts covering an area between Plymouth and Paignton and South to Prawle Point.
		The four transmitters operate on 101.9, 100.8, 100.5 and 101.2FM receiving their feeds from the studios at Unit 1G, South Hams Business Park in Churchstow, Kingsbridge in Devon.
		The service will launch in the Summer of 2004 using three transmitters at Plympton, Redruth and Caradon Hill, which should initially provide noise-limited outdoor coverage to 72.6% of the adult population of the main broadcast target area.
	www.geocities.com /thehotw/aircheck_UKDevon.htm (6388 words)

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