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BBC VHF 405 line TRANSMITTERS

LLANDONNA
Channel 1V Max ERP: 5.8kW (directional)
Vision carrier: 44.983125MHz Sound Carrier: 41.483125 MHz
The field strength contours on this map represent average values with the E.R.P. indicated; variations of as much as 3:1 in field strength may occur at individual points. The 0.1mV/m contour should not be interpreted as a rigid boundary of the area served, since the quality of reception obtainable would have depended on local conditions. Fading and interference may at times have been experienced in the outer areas served and also, in difficult locations, nearer the transmitter.
-x-x-x-x- Limit of service area free from perceptible co-channel interference for 90% of the time.
BBC Engineering information sheet 2920 (1) July 1964

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