This is a WIP thread and is using place holder text for the most part, I will keep updating it. Keeping it limited to frontline aircraft, I’m aware the trainer versions of alot of these aircraft also carried the systems and in some cases the development aircraft too.
Here we can discuss the various British ECM systems.
Sky Shadow ARI 23246/3
The Sky Shadow ECM pod is a software-programmable auto-responsive noise and continuous wave (CW) repeater jammer operating in two overlapping frequency bands. The low band operates in the frequency range of 5.0 - 9.4 GHz and the high band covers 9.15 -16.4 GHz. The pod is able to jam simultaneously up to two pulse radar threats in each band concurrently. It can also produce repeater jamming of CW radars. For practical purposes Sky Shadow’s antenna polar diagram comprises solid cones of 60° semi-angle directed fore and aft and centred on the pod axis. The software is designed to ensure that radars associated with the greatest threat are countered first and that threats ahead of the aircraft have a higher priority than those behind.
- Tornado GR.1
- Tornado GR.1A
- Tornado GR.1B
- Tornado GR.4
- Tornado GR.4A
- Harrier GR.3 (crammed into a ADEN gun pod known as Blue Eric) ARI-23353/1
AN/ALQ-101-10 (aka the Dash 10) ARI 23234
The frequency coverage of the pod is 2.6 to 16.5 GHz. This range is divided into 3 bands; 2.6 to 5.5 GHz, 4.85 to 9.7 GHz, and 8.9 to 16.5 GHz known as low, mid and high bands respectively. In the Jaguar fit, low band has been deleted, however it maybe replaced by another band at a later date. Each band has a travelling wave tube(TWT)amplifier, the power output is 200 watts per band. The overlap between 8.9 and 9.7 GHz is designed to cover the frequencies containing multiple threats and allow more power to be concentrated on these. Frequency coverage is not continuous across the whole range, as each band is divided into a number of sub-bands. Each sub band covers the expected frequency range of a particular threat and contains the noise or repeater modulation designed to counter a specific Soviet threat radar.
- Jaguar GR.1
- Jaguar GR.1A
- Jaguar GR.1B
- Jaguar GR.3
- Jaguar GR.3A
- Buccaneer S.2B
- Vulcan B.2
AN/ALQ-101-8 (Westinghouse ECM pod) ARI 23234
The Westinghouse 4111 101-8 RCM pod, which is a completely enclosed ECIVI system to be esrs4ed On the No 3 Weapons Station Pylon, will be fitted to the Buccaneer Mk 21, for both overland and maritime use. The pod operates in 3 radio frequency (RF) bands: 2.6-5.2 GHz, 4.8-9.6 G111 and 8.9-16.5 GHz, with separate noise and deception techniques available in each band. There are two overlap areas, 4.8-5.2 GHz and 8.9-9.6 GHz, designed to cover the frequencies containing multiple threats and to allow additional power to be concentrated on these threats. Each band is divided into a number of sub-hands and the particular noise or deception technique used in a sub-band is called a programme - each programme being designed to counter a specific Soviet threat radar. The Control Unit (C-6631), to be fitted on the port side of the navigators cockpit just beneath the hood rail, was designed to provide switch selection for the simultaneous operation of two nods with different functions and the annotation. of the master switch positions Standby (SBY), Transmit 1 (Tx1), Transmit 2 (Tx2) and BOTH, and of the lamps, is not fully compatible with the operation of the single 101-8 ECM pod. To overcome this problem, and to provide increased flexibility. in the selection of pod programmes, a new Control Unit (C-9492) will be fitted from 1976 onwards. The method of operation of the ECM pod and the programmes presently available are given
- Buccaneer S.2B
AN/ALQ-167 (Yellow Veil)
There are many AN/ALQ-167 variants, each using different combinations of the ULQ-21 countermeasures modules, Using a frequency range of 425 MHz to 18 GHz, it generates Noise, Deception/Repeater, or a Combination of the ECM jamming modes The Noise mode attempts to mask the illumination radar return signal with a larger RF power signal. In the Deception /Repeater mode, it attempts to provide false information (range, angle, velocity) to break the weapon system track by applying various types of modulation to the illumination signal. The ALQ-167 produces Combination modes by logically combining various noise and deception modes. The pod mounts externally on aircraft. Cable assemblies to each aircraft type permit interface between pod assembly and the control indicator via aircraft wiring.
- Lynx Mk.1
Towed Radar Decoy (aka the TRD)
The TRD system is housed in a modified BOZ-107 pod mounted on the port out-board pylon. The pod contains a RF receiver processor system that identifies and prioritises the threat. A Techniques Generator provides the appropriate jamming signal which is then transmitted by fibre-optic link to an active decoy which, when selected, is ejected from the pod and is towed approximately 100 meters behind the aircraft. Once it has been streamed, the decoy cannot be rewound into the pod; for recovery, the decoy is jettisoned and it drops to earth beneath a drogue parachute. Frequency coverage is NATO H-J bands (6-18Ghz)
- Tornado F.3
- Nimrod MR.2
Zeus ECM ARI 23333/1
The TG holds the available jammer techniques; it generates RF signals related to a particular RWR input in response to an initiation message from the EWP. The TG can monitor threats being jammed and can inform the EWP of the apparent loss of a threat being jammed. It will, however, only stop jamming when instructed by the EWP. Either of the following techniques may be called up by the EWP in response to a threat. Noise jamming by synthesis of the received radar signal frequency, combined, if necessary, with angle deception modulation. Repetition jamming of the threat signal with velocity and/or angle deception modulation. Noise Jamming. Noise jamming by synthesis techniques is the normal response for pulse type threats the reference frequency being taken from the receiver local oscillator. RF oscillators in the TG are set to the frequency of the threat and either or both of the Following modulations are then applied. Variable bandwidth amplitude modulated noise for range deception. Low frequency amplitude modulation (fixed or random depth) for angle and modulation type denial; the duty cycle, modulation depth and frequency is scheduled in the PFM. Skirt jamming can also be employed in which case the RF is offset. Repetition Jamming. Repetition techniques are only selected for CW threats using a portion of the receiver RF input as the jamming signal source. The required frequencies are then amplified with one or more of the following modulations applied (commutation between up to three separate repetition responses is possible). Velocity gate pull-off, with programmed rate and range pull-off. Low frequency amplitude modulation for angle denial. The duty cycle, modulation depth and modulation frequency are scheduled in the selected program. Variable bandwidth, pseudo random frequency modulated noise. Multiple frequency offset.
- Harrier GR.5
- Harrier GR.7
- Harrier GR.7A
- Harrier GR.9
- Harrier GR.9A
information on Praetorian
- Typhoon F Mk.2
- Typhoon FGR.4
AP101B-0607-15B Harrier GR.7 Aircrew Manual - Book 2 - Avionics and Weapons
AP101B-0605-15B Harrier GR.5 Aircrew Manual - Navigation And Attack
AWC Tornado GR1 Tactics Manual
AP-101B-4103-15B Tornado F Mk 3 Aircrew Manual Book 2 Weapons Systems
AP101B-1202-15C Buccaneer S.2B Aircrew Manual - Weapon System
CTTO Jaguar Tactics Manual 3rd Edition
DEFE 58-538 Tornado F.3 TRD