50 cm Gives longer range for given transmitter power.The Marconi series of 50 em radars gives clearance of jet aircraft from take-off to 150 miles plus on a power of only 500-600 kW. The one radar meets both airways surveillance and air traffic control requirements. Running costs are thus much lower.

50cm Penetrates thick weather without loss of efficiency. In most radars precipitation clutter seriously obscures the PPI picture. No remedial device is 100% efficient. The choice of the 50 cm wave length, however, avoids the difficulty entirely. It gives a clear picture of aircraft, even in heavy rain or snow, and also indicates the position of storm centres.

50cm Permits M.T.I.elimination of permanent clutter'. Of the various ways of clearing the echoes of stationary objects which confuse the interpretation of the radar situation, M.T.I. (moving target indication) undoubtedly gives the best results. The use of 50 cm makes it possible to use crystal control throughout a radar system to which a simple and completely stable M.T.I. can be harnessed to give a clear and unambiguous picture.

50 cm Switches into instant operation. Crystal control of frequency enables Marconi 50 ern radar to be brought into instant operation even after long periods of inactivity.

GIVES THE LONG, CLEAR VIEW

MARCONI - COMPLETE CIVIL, MILITARY AND NAVAL RADAR SYSTEMSSURVEYED, PLANNED, INSTALLED, MAINTAINED.

MARCONI'S WIRELESS TELEGRAPH COMPA NY LIMITED, CHELMSFORD, ESSEX, ENGLAND