ALEXANDRA PALACE, NORTH LONDON BRISTOL CHANNEL CLIFDEN, COUNTY GALWAY, IRELAND DALSTON, NORTH LONDON GLACE BAY, CAPE BRETON, NOVA SCOTIA, CANADA GPO BUILDING, ST. MARTIN'S-LE-GRAND, LONDON HALL STREET, CHELMSFORD, ENGLAND HAVEN HOTEL, SANDBANKS, POOLE LIZARD POINT, CORNWALL MARCONI HOUSE, THE STRAND, LONDON NEW STREET, CHELMSFORD, ENGLAND POLDHU, CORNWALL, ENGLAND SALISBURY PLAIN, ENGLAND SHORTWAVE STATIONS SIGNAL HILL, NEWFOUNDLAND, CANADA SOUTH WELLFLEET, CAPE COD, MASSACHUSETTS VILLA GRIFFONE, NEAR BOLOGNA, ITALY WRITTLE, CHELMSFORD