§ 35. Mr. Onslowasked the Postmaster-General why he refuses to allow the use of passive relays in microwave communications networks where the use of such relays would reduce the required heights of radio masts.
§ Mr. MasonAerials used on radio relay routes must be highly directional and pick up only signals sent between two stations. Passive reflectors do not have the discrimination possessed by parabolic or horn aerials and are, therefore, not suitable for use where a complex network of microwave routes is contained in a comparatively small area.