Relative to the last notice, a CW jammer would be at a single frequency, so it seems odd they specify a band. Perhaps a CW anywhere in that band.
I talked to the USAF about their jamming, and they use white noise over the band. A certain COTS Marconi (IIRC) signal generator produces the band limited noise and puts it on the carrier. -----Original Message----- From: "David J Taylor" <[email protected]> Sender: [email protected] Date: Mon, 3 Dec 2012 12:16:12 To: Time-nuts mailing list<[email protected]> Reply-To: Discussion of precise time and frequency measurement <[email protected]> Subject: [time-nuts] UK: GPS Jamming Notices I have received the three following notices: ________________________________________________ NOTIFICATION OF GPS JAMMING EXERCISES STANFORD TRAINING AREA, EAST ANGLIA, FEBRUARY 2013 Dates: Between 11 and 15 February 2013. Times: 0900 -1600 GMT. Location of MULTIPLE jammers: Land based within 5km of N52° 29.0’ E000° 45.0’. Frequency: A 24 MHz band centred around 1575.42MHz (GPS L1). Total Power: Up to 10 Watts EIRP. It is stressed that, as in previous exercises, Safety of Life operations will at all times take precedence over exercise activities. ________________________________________________ ________________________________________________ NOTIFICATION OF GPS JAMMING EXERCISES OFF THE COAST OF EAST ANGLIA, FEBRUARY/MARCH 2013 Dates: 25 to 26 February and 28 February to 1 March 2013. Times: Intermittently for a 90 minute period in each time slot 0930-1200 GMT and 1400-1630 GMT. Location of jammers: Sea based omni-directional jammer onboard a vessel sailing within the Experimental Buoys area, as charted, but no further North than 51°55’N in the area bound by following boundary positions (WGS84): * 51.916667°N 1.453745°E (51° 55.0’N 1°27.2’E) * 51.883980°N 1.445504°E (51° 53.0’N 1°26.7’E) * 51.883607°N 1.397795°E (51° 53.0’N 1°23.9’E) * 51.916667°N 1.421994°E (51° 55.0’N 1°25.3’E) Frequency: 24 MHz bands centred around 1575.42MHz. Total Power: 0.0005 Watts ERP maximum so as not to effect vessels outside the area bounded by the co-ordinates above or aircraft flying above 2500ft. It is stressed that, as in previous exercises, Safety of Life operations will at all times take precedence over exercise activities. ________________________________________________ ________________________________________________ NOTIFICATION OF GPS JAMMING EXERCISES RAF SCULTHORPE AIRFIELD, EAST ANGLIA, MARCH 2013 Dates: 25th and 29th March 2013. Times: 0700 -1700 BST. Location of SINGLE jammer: Land based within 2km of 52° 50′ 54″ N, 0° 45′ 38″ E Frequency: A 20 MHz band centred around 1575.42MHz (GPS L1). Power: Up to 0.3 Watts EIRP (300mW). Jammers: Omni-directional jammers radiating CW. It is stressed that, Safety of Life operations will at all times take precedence over exercise activities. ________________________________________________ David -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: [email protected] _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
