Field strength measurements were made over several overland transmission paths on Bands I and II, at distances up to 274 km. The measurements when corrected for transmitting aerial height above mean terrain and also for receiving site variation factor give field-strength/distance curves which are in reasonable agreement with the current C.C.I.R. tropospheric propagation curves. The range of fading and field strength exceeded in each month for specified time-percentages are also discussed.