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2
CIVIL AND MILITARY AIRCRAFT MOVEMENTS WITH CONSEQUENTIAL LANDING
DELAYS BECAUSE ADEQUATE SAFETY MARGINS MUST BE MAINTAINED.
MOREOVER THE COST OF THE EQUIPMENT WAS STATED IN MY APPLICATION AS £290,830. THIS WAS ON COSTS PERTAINING SOME TWO YEARS AGO AND THEY
HAVE CERTAINLY NOW GONE UP. THE LONGER A DECISION IS DELAYED THE
GREATER WILL BE THE CHANCES OF FURTHER INCREASES OCCURRING.
5. IT IS ALSO EXTREMELY DESIRABLE THAT IN A CONTRACT OF THIS
MAGNITUDE THE MANUFACTURER SHOULD BE BOUND (IRRESPECTIVE OF THE EXAMINATION BEING CONDUCTED BY HEADQUARTERS 90 SIGNALS GROUP) TO
GUARANTEE THAT THERE WILL NOT BE AN UNACCEPTABLE DEGREE OF MUTUAL
INTERFERENCE. HOWEVER IT IS NOT POSSIBLE TO REQUIRE SUCH A GUARANTEE
UNLESS THE MANUFACTURER HAS ACCESS TO TECHNICAL DETAILS OF THE
TAI MO SHAN RADAR EQUIPMENT (WHICH IS AN FPS-91A). THE MANUFACTURER REFERRED TO ABOVE HAS, IT IS UNDERSTOOD, CARRIED OUT WORK IN CONNECTION WITH NATO AND IS BELIEVED TO HAVE AFFILIATIONS WITH THE
AMERICAN RAYTHEON CORPORATION. I HOPE THEREFORE THAT THERE WILL BE
NO DIFFICULTY IN PLACING HIM IN POSSESSION OF THE INFORMATION HE
REQUIRES EVEN THOUGH IT MAY BE CLASSIFIED INFORMATION. I SHALL
BE GRATEFUL IF YOU CAN SECURE CLEARANCE FOR THE RELEASE TO THE
MANUFACTURER ON REQUEST OF TECHNICAL INFORMATION ON THE FOLLOWING
POINTS :-
(1) FOR THE ASSESSMENT OF INTERFERENCE TO THE BEACON HILL RADAR :- - PEAK POWER,
- PULSE WIDTH,
PULSE SHAPE,
P.R.F. WHETHER FIXED OR STAGGERED (AND STAGGER RATIO),
SINGLE OR DIVERSITY OPERATION,
- TRANSMITTER ANTENNA GAIN AT FUNDAMENTAL FREQUENCY,
· SIDELOBE LEVEL,
· SPILLOVER AND BACK RADIATION LEVEL,
POLARISATION,
VERTICAL POLAR DIAGRAM,
(11) FOR THE ASSESSMENT OF INTERFERENCE TO THE TAI MO SHAN EQUIPMENT:
RECEIVING ANTENNA GAIN,
RECEIVER BANDWIDTH,
RECEIVER NO I SEFIGURE,
WHETHER VIDEO INTEGRATION INCORPORATED,
WHETHER VIDEO CORRELATION INCORPORATED,
- WHETHER P.R.F. DISCRIMINATION INCORPORATED,
- WHETHER PULSE LENGTH DISCRIMINATION INCORPORATED,
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/WHETHER