dB Broadcast supplied a fleet of nine road trailers for Rohde & Schwarz, used by the broadcasting regulator Ofcom to check and monitor RF transmissions throughout the UK.

Each trailer features a large composite UHF/VHF Direction Finding (DF) antenna mounted on a 10m telescopic mast that pivots to the horizontal position for travelling – in the manner of a yacht mast. The contract included the design, manufacture and test of all the associated power supply systems in custom-built weatherproof enclosures. The trailer and mast is designed for use in wind speeds of up to 100kph, despite carrying a mast head load in excess of 50kg. Many components including the batteries are of military grade specification to enable the systems to function reliably whatever the British weather throws at them.

Once the technical solution was agreed, the manufacture, test and delivery took place within six weeks, with the second batch of six trailers going through dB’s factory in just three weeks.