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BBC Research and Development Reports

A collection of BBC Research and Development reports and white papers, dating from the 1960s through to 1996.

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BBC Research and Development Reports
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R&D Report 1956-09 : Low power television transmitters -- Site tests in Londonderry. C.J. White, D.W. Taplin, R.S. Sandell, J. Hall Two sites, Sheriffs Mountain and Lisdillon, have been tested. Of these the Sheriffs Mountain site will provide the better service and, in conjunction with the Divis transmitter, coverage over most of Northern Ireland will be achieved with the exception of the Enniskillen area. Reception tests indicate that the field strength of Divis at Sheriffs Mountain should...
Topics: sheriffs, divis, mountain, site, lisdillon, contour, tests, londonderry, aerial, field, principal...
BBC Research and Development Reports
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R&D Report 1956-19 : Low power television transmitters -- Rosemarkie. C.J. White, D.W. Taplin, R.S. Sandell, J. Hall This report gives the results of tests at the site selected for a television transmitter at Rosemarkie, near Inverness. It is shown that a low power transmitter at Rosemarkie will provide most of the population in the Dornoch and Moray Firth areas with a satisfactory television service. Reception tests show that the Meldrum television transmission should provide a...
Topics: aerial, meldrum, rosemarkie, television, strength, site, field, transmitter, dornoch, median,...
R&D Report 1956-10 : Reception disturbances over North Atlantic paths during the years 1947 to 1954. T.W. Bennington The records of reception conditions over North Atlantic paths which are regularly made at Tatsfield have been examined for the eight years 1947 to 1954, with a view to learning something about the effects of ionospheric disturbances upon reception over these paths. The nature of the long-period and seasonal variations in the incidence of such disturbances has been...
Topics: disturbance, magnetic, reception, disturbed, ionospheric, tatsfield, conditions, disturbances,...
R&D Report 1954-09 : Information on short wave propagation conditions from reception results on fixed frequencies. T.W. Bennington Regular hourly observations made at Panorama, South Africa, on reception of five fixed frequencies from Standard Frequency Station WWV have been analysed to obtain information on propagation conditions and their daily and seasonal variations, for comparison with those given by world charts of predicted MUF. The results indicate that the predications agree well...
Topics: reception, muf, frequencies, gmt, propagation, signal, frequency, predicted, luf, panorama, sinpo...
BBC Research and Development Reports
by G.I. Ross, C.J. White, D.W. Taplin, R.S. Sandell, J. Hall
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R&D Report 1956-08 : Television transmitters -- Site tests in Cumberland. G.I. Ross, C.J. White, D.W. Taplin, R.S. Sandell, J. Hall Two sites, Warnell Fell and Sandale Fell, have been tested in Cumberland. Sandale Fell provided much better site, particularly in respect of a service to the populated coastal strip of Cumberland, and this report accordingly recommends that the transmitter be sited at Sandale Fell. The television distribution plan provides for a low power transmitter in...
Topics: sandale, transmitter, aerial, strength, pell, shotts, receiving, field, fell, kirk, service area,...
R&D Report 1957-02 : Report on International Colloquium on wave propagation, Paris - 17th to 21st September, 1956. T.W. Bennington This report summarises the International Colloquium on Wave Propagation which took place in Paris on 17-21st September 1956.
Topics: propagation, ionospheric, scattering, tropospheric, absorption, auroral, meteorological,...
R&D Report 1957-08 : Propagation of broadcast transmissions over the U.K./Johannesburg circuit during 1956. T.W. Bennington This report contains the results of an analysis of the signal strength and some other data obtained from the reception log sheets compiled at the Panorama, South Africa, receiving station of the South Africa Broadcasting Corporation. These deal with reception of BBC transmissions directed towards South Africa during every day of 1956. The results are presented in the...
Topics: signal, strength, observation, frequency, muf, luf, frequencies, gmt, signal strength, predicted,...
R&D Report 1959-05 : Reception of Crystal Palace 51.5 Mc/s and 45.0 Mc/s channels in South Africa during the increasing phase of the sunspot cycle. T.W. Bennington Reception reports have been received from the Panorama, Johannesburg receiving station of the. South African Broadcasting Corporation in respect of the reception there during the period 1000-1800 GMT of the Crystal Palace 41'5 Mc/s and 45'0 Mc/s frequencies and the data are here presented. The reports have been analysed for 28...
Topics: reception, muf, gmt, variations, monthly, values, percentage, sunspot, mup, frequency, sunspot...
R&D Report 1954-17 : Examination of the distribution with frequency and time of the field of WWV at Tatsfield during six months near the sunspot minimum. T.W. Bennington Hourly measurements of the field of WWV on 5, 10, 15 and 20 Mc/s have been made at Tatsfield over the greater part of the day for the last six months of 1953, and these have been analysed. The departure and arrival angles corresponding to the different propagation modes for the different frequencies, times of day and...
Topics: field, frequencies, frequency, mode, predicted, measurements, muf, contours, absorption, luf,...
R&D Report 1957-06 : Low-power V.H.F./F.M. transmitters site tests at corwen (Cyrn-y-Brain). C.J. White, D.W. Taplin, R.S. Sandell, J. Hall This report gives the results of an f.m. transmitter site test at Corwen (Cynn-y-brian). It is shown that a low-power transmitter will provide a satisfactory service for most of the population of Denbighshire and Flintshire. The service area would not extend to Anglesey and north-west Wales and another site would be necessary for this area.
Topics: corwen, transmitters, median, site, aerial, transmitter, field, strength, omnidirectional,...
R&D Report 1956-38 : Low-power V.H.F./F/M. transmitters - Galashiels area site tests. C.J. White, D.W. Taplin, R.S. Sandell, J. Hall Two sites were tested in the Galashiels area. It was found that Lindean Moor would provide the better service and this site is therefore recommended. Tests on the reception of television sound indicated the probability of a reliable signal from the Kirk o' Shotts v.h.f. transmissions for rebroadcasting from Lindean Moor.
Topics: lindean, strength, moor, shotts, dryden, site, aerial, field, transmitter, kirk, television sound,...