Contents
Contents
1. Shearwater ECM 900 00004 Rev 2 4 1 4 2 4 2 4 3 4 4 4 5 4 5 Theory of Operation The Hunter V2 is intended to be used both but Technical Security professionals during Technical Security Inspections and by General Security or office staff supplementing physical searches This is possible because unlike most effective Technical Countermeasures equipment Hunter V2 is easy to use positive in operation and it does not require years of skill and technical ability to interpret the results Hunter V2 is a Differential Field Gradient Radio Microphone detector The Differential Field Gradient method of Radio Microphone detection works on the principle that the Radio signals from relatively distant sources generate a fairly constant Radio frequency field strength while the signal from a very close transmitter Radio microphone shows a very marked change in field strength close to the device The search Head of Hunter V2 contains two balanced ultra wide band detectors positioned side by side The Hunter V2 functions by comparing the outputs from the two detectors on the Search Head When the Search Head is detecting only innocent broadcast transmissions from distance sources the output from each of the two Search Head detectors is equal and Hunter V2 will give little or zero meter indication When the Search Head is moved over a Radio Microphone the Hunter V2 metering detects the imbalance providing indication on the LED meter2. items in the sweep location Use it like a vacuum cleaner and clear the floors walls ceilings Get within 10 cm of everything Routine Maintenance and Adjustments The Hunter V2 counter surveillance equipment requires no routine maintenance Should any defect be noted the equipment should be returned to Shearwater 2000 or a locally appointed maintenance facility of Shearwater 2000 for repair Policy of Continual Improvement Shearwater 2000 reserve the right to upgrade improve and modify our product line in keeping with our policy of providing our customers with the best tools possible to perform their work In order to provide leading edge equipment which satisfies customer needs we appreciate feedback about our products and through requests for changes can create better equipment more closely suited to your requirements Your needs are our next product Page No 9 Shearwater ECM Shearwater House 7 Deerfern Close Milton Keynes MK14 5BZ UK Tel IDD 44 0 1908 677062 Fax 0 1908 230732 E Mail john shearwater ecm fsnet co uk
3. microphones computer data is just as valuable Others Signals stored in Radio Microphone Noise will be heard no cadence Rapid deflection of metering occurring occasionally Pulses heard in headset Very hard to locate dependant of how often the bursts a transmitted Signal is only present when noise is present in Target location Tapping suspected microphone will cause cadence to be detected in the headset Bursts of data corresponding to the operation of data Processing equipment should be suspect Note that most electronic equipment radiates to some degree so care in identification is necessary As technology evolves so does the eavesdropper Be suspicious of any localised high strength Hunter V2 meter indication irrespective of what it sounds like Cadence This is the property whereby when the Radio Microphone detects a sound the transmission from the microphone does not contain the sound in a form which is identifiable as the sound but is still notable as a change in the transmission which is correlated to sounds in the search location A example would be a hand clap which sounds on a CVSD transmission as a burst of noise The noise is not recognizable as a clap but instantly recognizable as a change in transmission caused by the clap Shearwater ECM Shearwater House 7 Deerfern Close Milton Keynes MK14 5BZ UK Tel IDD 44 0 1908 677062 Fax 0 1908 230732 E Mail john shearwater ecm fsnet co uk
4. Shearwater ECM 900 00004 Rev 2 Contents Introduction f z 2 System Description 2 System Capabilities f 3 Theory of Operation 5 System Controls p 7 Operation i 2 3 8 Inspection guidelines f f 9 Routine Maintenance and Adjustments f 9 Policy of Continual Improvement 9 Page No 1 Shearwater ECM Shearwater House 7 Deerfern Close Milton Keynes MK14 5BZ UK Tel IDD 44 0 1908 677062 Fax 0 1908 230732 E Mail john shearwater ecm fsnet co uk Shearwater ECM 900 00004 Rev 2 1 2 1 2 2 Introduction The Shearwater 2000 Hunter V2 is an equipment designed to detect locate and identify Radio transmitters used for surreptitious surveillance Radio Microphones Hunter V2 is designed to detect virtually all known or theoretically possible Radio Microphone attacks with an ease of use previously impossible Hunter V2 is capable of extremely high degrees of effectiveness when used by seasoned professionals or by casual staff after a few hours of training System Description Hunter V2 is a Differential Field Gradient Radio Microphone Detector The system works by detecting the rapidly changing Electromagnetic field created by an adjacent Radio microphone while rejecting the strong but essentially constant Electromagnetic fields due to distant but powerful broadcast transmitters The system has the following parts 1x Search He
5. ad 1 x Signal Processor Extendable boom assembly 1 x Headset 1 x Audio Cassette Training Aid 1 x Test Source Training aid 1 x User Manual 1x Transit Case Page No 2 Shearwater ECM Shearwater House 7 Deerfern Close Milton Keynes MK14 5BZ UK Tel IDD 44 0 1908 677062 Fax 0 1908 230732 E Mail john shearwater ecm fsnet co uk Shearwater ECM 900 00004 Rev 2 3 System Capabilities 3 1 Hunter V2 is designed to be effective against virtually all known or possible types of Radio Microphone The system is unique in that while capable of detecting the most sophisticated types of attack Hunter V2 can be used effectively by an average person after rudimentary instruction The following types of device are detectable by Hunter V2 together with the sounds expected in the headset Radio Microphone Expected Audio from Headset Type Frequency Modulated Simplest and most Room noises same as the F M common type microphone detects Amplitude Modulated Little used because Room noises same as the A M F M offers better microphone detects qualit Double Modulated In common use for Silence Headset will go quiet Sub Carrier 25 years Tapping the suspected Radio microphone may cause corresponding sounds in the Hunter V2 headset Double Similar to Double May hiss may hum or may sound Modulated Noise Modulated but with like anything but only at one location masking masking added to in the room Tapping suspected ma
6. ashes yellow when the SENSITIVITY switch is in the reduced gain HUNT HOME setting ON A green indicator which illuminates when power is turned on LOW BAT A flashing red indicator which illuminates when the batteries are almost exhausted PHONES 1 4 Jack socket for connection to a stereo headset 32 Ohm minimum impedance A closed back headset is recommended to prevent sounds from the headset from being detected by the Radio Microphone SIGNAL STRENGTH A centre zero LED Bargraph meter When Hunter V2 is in a uniform Radio Frequency field no indication on the meter is normal If the field is stronger to the left hand side of the search head the meter deflects to the left If stronger to the right of the search head the meter deflects to the right BALANCE On Search Head Used to set the FIELD STRENGTH meter to zero prior to starting work MODE SONAR LISTEN This switch changes the sound heard in the headset from detected audio from the radio transmission to a sonar style ping which increases in frequency when the FIELD STRENGTH meter deflects Page No 7 Shearwater ECM Shearwater House 7 Deerfern Close Milton Keynes MK14 5BZ UK Tel IDD 44 0 1908 677062 Fax 0 1908 230732 E Mail john shearwater ecm fsnet co uk Shearwater ECM 900 00004 Rev 2 6 Note a Note c Note Operation Before the operation make sure the batteries are fully charged or a spare set of batteries is available Ass
7. cent ambient signals will normally be noted at several points in the search location sometimes they will be large enough to cause a full scale indication on the Bargraph meter This tape should not be listened to at the search location unless a closed back headset is used Using a cassette player With the loudspeaker active will alert the listening post that Hunter V2 is about to be used Sometimes when a Radio Microphone is detected the headset will at first indicate increased levels of innocent ambient signals As the Radio Microphone is approached the true nature of the Raio Microphone signal will be recognizable Page No 6 Shearwater ECM Shearwater House 7 Deerfern Close Milton Keynes MK14 5BZ UK Tel IDD 44 0 1908 677062 Fax 0 1908 230732 E Mail john shearwater ecm fsnet co uk Shearwater ECM 900 00004 Rev 2 system Controls Hunter V2 has the following controls and switches VOL ON OFF A rotary control located on the base unit Function self explanatory SENSITIVITY NORMAL HUNT HOME A rotary control with integral switch This control reduces the gain of Hunter V2 to allow the pin pointing of powerful Radio Microphones when discovered The control is also useful when Hunter V2 is used in an extremely high ambient Radio Frequency environment When the control is rotated from NORMAL a flashing LED labelled Sense Low informs the user that the system detection sensitivity is reduced SENSE LOW Indicator Fl
8. emble the Hunter V2 system put on the headset and turn on Ensure sensitivity is set to NORMAL turn POWER to ON and adjust VOLUME to a comfortable level MODE should be set to LISTEN Putting the headset on before switching on prevents sound from the headset from reaching the eavesdropping microphone which could alert the listening post Ensure meter reading is Zero when the search head is held in space away from all objects Centre of the room is the best place Adjust Search Head mounted BALANCE control if necessary until no LED s in the SIGNAL STRENGTH meter are illuminated Perform a sweep of the target location The Search Head of Hunter V2 should be moved close to every object and surface of the test location including the walls floors and ceilings As the Hunter V2 search head is moved around the search location sounds will be heard in the headset and occasionally some of the meter bars will illuminate showing the presence of field imbalance This is quite normal and the signals causing the imbalance will normally be easily identifiable from the sound in the headset Should a Radio Microphone be encountered the meter bars will deflect to full scale and will go from full scale left to full scale right as the search head is moved by the Radio Microphone and at the same time the sound in the headset will change indicating the presence of another type of transmission at this location Do not forget the ceilings and floors d
9. esks and window frames Depending on the skill of the user it is possible to perform a sweep with Hunter V2 which does not in any way alert the listening post that their Radio Microphone has been compromised Itis up to the user to decide whether to remove the device or not but it is suggested that if the Radio Microphone has been banged by the Search Head or if the user has been very close to the device when performing the search the user s normal breathing sounds like thunder to the listening post in this situation that the Radio Microphone is removed immediately Unless you are certain that the Radio Microphone user could not be aware that his attack has been discovered Remove it or Loose it Page No 8 Shearwater ECM Shearwater House 7 Deerfern Close Milton Keynes MK14 5BZ UK Tel IDD 44 0 1908 677062 Fax 0 1908 230732 E Mail john shearwater ecm fsnet co uk Shearwater ECM 900 00004 Rev 2 7 1 7 2 7 3 7 4 7 5 8 1 9 1 9 2 Inspection guidelines Radio microphones can be built into anything Radio Microphones can sound like anything Use both the LED metering and headset with MODE set to LISTEN The LED meter will show you that a signal is present the headset will tell you what it is or is not Use at maximum sensitivity unless the ambient field is so high that full scale meter deflection occurs frequently due to broadcast transmissions Hunter V2 search head must be close to all surfaces and
10. indicates if the signal causing the R F field disturbance is Broadcast Television Broadcast A M or F M or something more sinister The Hunter V2 will find virtually all Radio Microphones irrespective of sophistication Not all Radio Microphone signals can be demodulated by Hunter V2 as modern technology allows digital encryption which effectively masks the nature of the signal to all except those with the appropriate decryption Key Hunter V2 will easily find and identify even the most sophisticated encryption technique by the simple fact that the signal is there emanating from one spot Standing waves from broadcast transmitters can cause a full scale deflection of the Hunter V2 metering in urban locations These standing waves are usually notable at similar strength at a number of points in the sweep location A full scale deflection even if silent noted adjacent to an object or part of a wall at signal strength higher than is noted elsewhere in the sweep location is almost certainly a Radio Microphone especially if the deflection is still full with the gain reduced by rotation of the NORMAL LOCATE control Normally Hunter V2 will encounter innocent ambient signals when conducting an eavesdropper search Hunter V2 is provided with a cassette tape which allows the user to become familiar with these sounds and it is recommended that the user has listened to this tape and is familiar with these sounds prior to using Hunter V2 Inno
11. ing usually a full scale deflection Hunter V2 is equipped with a Centre Zero Light Emitting Diode LED meter Full scale deflections left and right correspond to the movement of the head over the object generating the high local field Radio microphone When the field is stronger to the left of the search head meter deflection is to the left Hunter V2 is equipped with an audio demodulation system enabling the nature of the transmission detected to be ascertained Hunter V2 looks like a metal detector and is used the same way The system search head is a lightweight antenna system which is connected by a shaft to the signal processor The user connects to search head to the signal processor shaft plugs in the headset switches on and commences use The differential detection system means that typically no activity is noted on the LED meter until a severe R F field imbalance is noted Power conduits and metal window frames will typically cause a small indication an adjacent Radio Microphone will cause a large indication typically full scale deflection swinging from right to left as the search head is moved over the Radio Microphone The recovered audio in the user headset Page No 5 Shearwater ECM Shearwater House 7 Deerfern Close Milton Keynes MK14 5BZ UK Tel IDD 44 0 1908 677062 Fax 0 1908 230732 E Mail john shearwater ecm fsnet co uk Shearwater ECM 900 00004 Rev 2 4 6 Note 47 Note Note clearly
12. ke the detected microphone may cause quiet carrier less corresponding sounds in headset notable Delta Modulated Simplest approach Sounds like noise but containing the including CVSD to digital cadence of room noises communication PCM Pulse Coded More sophisticated Often sounds like noise Often lees including digital contains the cadence of room noises ADPCM communication but not always Sometimes silent Noise Modulated Spread Spectrum White Noise no cadence DSSS FM Frequency Hopper Spread Spectrum Room Noises o Noises Digital Hopper Spread Spectrum N like noise but containing the cadence of room noises Inverted Speech FM Elementary method The cadence of room noises will be Time Domain of Scrambling heard Tapping the suspected Interleaving including speech to conceal microphone will cause very marked split band inversion the true nature of sounds the signal Quite popular Page No 3 Shearwater ECM Shearwater House 7 Deerfern Close Milton Keynes MK14 5BZ UK Tel IDD 44 0 1908 677062 Fax 0 1908 230732 E Mail john shearwater ecm fsnet co uk Shearwater ECM 900 00004 Rev 2 Digitally Encrypted High security transmission Available but not common Burst Mode memory and transmitted in rapid bursts Not in common use Single Side Band Not common SSB because of difficulties in achieving good sound qualit Data Attacks Not all Radio eavesdroppers use
Download Pdf Manuals
Related Search
Contents contentstrack contentstack contentsquare contents track login contents meaning contents synonym contents insurance contents page contents and devices contents tracker contents insurance for shared renters contents insurance uk contents of big beautiful bill contents of a box labeled smtwtfs contents collaboration contents home insurance content store contentshake contentscale ai contents ai contents picture contents tokyo contents page layout contentstack api contents square