COM : FROM 04/03/08 08:00 TO 04/03/14 16:00 B0391/04
D)JAMMER A: MAR 08-14 0800-1600
JAMMER B: MAR 09, 10, 11 2200-2245
E)GPS JAMMING EXERCISES.
GPS SIGNALS (1227.60MHZ AND 1576.42MHZ) WILL BE JAMMED DURING PERIODS
STATED ABOVE, GROUND BASED JAMMERS WILL BE LOCATED WI 3KM OF 5201N
00336W (SENNYBRIDGE DANGER AREA).
JAMMER A: OMNI DIRECTIONAL AFFECTING ACFT WI RAD 68NM (DEPENDING ON
ALTITUDE)
JAMMER B: DIRECTIONAL AFFECTING ACFT AT A DISTANCE OF UP TO 210NM IN
THE SECTOR 180 THROUGH TO 240 DEG (DEPENDING ON ALTITUDE).
THE EMERGENCY CEASE JAM POINTS OF CONTACT ARE:
EXERCISE OPERATIONS 01874-635599
TRIALS MANAGER 07813-592626
DURING THESE PERIODS, GPS RECEIVERS MAY SUFFER INTERMITTENT OR TOTAL
FAILURE, OR GIVE INCORRECT POSITION INFORMATION. CREWS SHOULD BE
AWARE OF THESE LIMITATIONS AND USE ALTERNATIVE MEANS OF NAVIGATION.
THE POLICY FOR THE USE OF GPS FOR U.K. AIR NAVIGATION SEVICES IS
GIVEN IN AIC 93/2002 (PINK 41)
one example that's already been posted on PPRuNe