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AN/PVS-4

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simultaneously. Later designations such as the AN/PVS-4A use two common AA batteries (BA-3058/U) via a purpose-built adapter (PN A3009873) that attaches to one of the circular battery compartments. Use of the adapter negates the need for BA-5567/U and BA-3058/U. AN/PVS-4s still in use today are typically upgraded with the AA battery adapter even if they have not been upgraded to a third generation tube. Some AN/PVS-4A models made after 1984 feature an integral AA battery housing that does not require the use of an external AA battery adapter.
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The Stinger reticle is very different in that it is a rear-mounted illuminated reticle -the reticle is built into the tube and positioned on top of the screen so both the screen and reticle are in focus. It also allows red-on-green illumination which makes the reticle stand out. The top circle is the
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required firing a minimum of 20 rounds to seat before the zeroing procedures could begin, leading to an excessive expenditure of ammunition. The sight reticles were subsequently modified, requiring only 2 rounds for seating purposes. Early reticles for the M16/M203 could not be zeroed for each weapon
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Unlike earlier passive starlight weapon scopes the AN/PVS-4 provided a high quality image without significant distortion, could adjust to changing ambient light conditions, was able to take multiple reticles to operate in many roles and had protective features allowing it to shut down in the event of
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The MX-9644 tube was also continued in the form of the MX9644/UV which was a second generation tube although evidence exists that a further hybrid tube (Gen3 tube attached by FO to a Gen1 tube) was developed under this specification to provide far more gain, improved S/N and lower EBI. Hybrid tubes
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The AN/PVS-4 uses a 25mm screw-type variable-gain Image Intensifier tube. Operational voltage is 3.0 Volts. Early production models feature two circular battery compartments located on the main housing. These battery compartments are designed to accommodate one 3.0V BA-5567/U, or two 1.5V BA-3058/U
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The ITT F4849 and ITT F4960 (MX-11619 and MX-11620) were also developed which use a 25mm Gen3 tube. As these tubes were proximity focussed, it was necessary to add a Fiber-Optic inverter to the tube to both extend the optical length of the device and the Gen3 photocathode was also mounted in some
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Two other tube developments that occurred but were not widely manufactured included optical relays to invert the image both in front and behind a Gen3 25mm tube. This allowed for significant increases in tube resolution and performance over the FO based third generation tubes and involved a lens
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An example of a noted shortcoming ultimately considered insignificant was an enemies ability to detect the reflection of the AN/PVS-4 objective lens using an active infrared night vision device. The IR device needed to detect the AN/PVS-4 required a straight-on unobstructed view, and AN/PVS-4
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Reticle burn-in was also addressed. One issue that persists even in production models is the tendency for the projected reticle pattern to become washed out in bright light. This can be somewhat mitigated by adjusting the Reticle Brightness knob to its brightest position and keeping the Tube
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Much of the success and longevity of the AN/PVS-4 was due to the MX-9644 Image Intensifier tube. To make the tube more usable with simple optics, a second-generation MCP based image intensifier was adapted to an electrostatic inverter, similar to a first-generation image intensifier.
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A direct descendant of the AN/PVS-4 using an advanced Gen III+I F4844 Image tube, it is capable of identifying targets at ranges of up to seven kilometers. It is intended as the sighting mechanism for the Stinger missile. It features as 2.26x zoom and a 23.5 degree field of view.
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Although passive night vision technology capable of allowing vision under ambient starlight conditions has existed since the 1950s, it was not until the AN/PVS-4 was developed that a practical, high quality device that met military requirements was first made available.
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Due to its availability and affordability, the AN/PVS-4 has been used very successfully in the realm of electronically assisted astronomy. Astronomers have adapted the AN/PVS-4 for use with telescopes and other celestial observation equipment.
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Although not a hybrid tube (Gen1 and Gen2 in the same tube housing) it nonetheless produced a gain of around 20,000 making it suitable for use under starlight only conditions and even overcast starlight conditions in remote locations.
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detection only occurred using an active device (as opposed to passive). The IR light emitted from the enemy's active device would be clearly observable to a anyone employing an AN/PVS-4, making the enemies position easily known.
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Several issues noted were reliability, specifically with intensifier tubes being damaged due to moisture. This problem was fully addressed in final production. It was also noted the mount designed to secure the AN/PVS-4 to the
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In December 1974, the final AN/PVS-4 Development Test recorded the various shortcomings found during field testing. The majority of the issues were addressed in final production. Issues not addressed were deemed permissible.
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The addition of a "A" after the model, e.g., AN/PVS-4A, signifies a third-generation image intensifier tube and may be designated either after upgrade or at original manufacture. "A" variants typically use "AA" batteries.
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The AN/PVS4 also has a Day/Night adapter that allows sighting in of the units during the day time or for daytime operation of the sight. Under extremely bright nighttime conditions, it may be necessary to use this adapter.
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Because of the limited availability of 25mm image intensifier tubes and housings to civilians, and what AN/PVS-4s did become available tended to have well used tubes and as a result, civilians tended to avoid buying them.
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Although production has ceased, as recently as 2008 the US military was still obtaining parts to both repair AN/PVS-4s and convert AN/PVS-4s to AN/TVS-5As. It is still presently also upgrading AN/PVS-4s to AN/PVS4As also.
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Under moonlight or lower conditions, the AN/PVS-4 can be used without the adaptor and the ABC or Automatic Brightness Controls will reduce the gain, although the image may be too bright for the reticle to show correctly.
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cases on a Fiber Optic plate rather than the usual Gen3 glass plate to match the focal point of the AN/PVS-4 optics. These tubes provided significant performance increase in gain but very little in the way of resolution.
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While considered an older scope, it still shows up from time to time as a second-hand or used item at weapon shows and through private sales, although good quality units are still sought after and difficult to come by.
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When used, the image of the AN/PVS-4 is reduced and appears somewhat triangular. Due to the small apertures and resulting light diffraction, focusing behavior differs from normal operation due to the increased
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Additionally, companies such as AB Night Vision also produce after-market surveillance device housings such as the NVM-4A for law enforcement and civilian use that take surplus military MX9644 tubes.
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Despite being obsoleted by newer technology, especially third-generation night vision, the AN/PVS-4 is still a capable device and still far exceeds the quality of many contemporary civilian devices.
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Although the AN/PVS-4 has not had a great deal of cultural impact, its legacy of high quality night vision has become a staple of movies and television shows which often do not show real equipment.
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Although not specifically considered "variants" there are a number of other models that share the AN/PVS-4 lineage and often use interchangeable components, including the image intensifier tube.
1369:"Technical Manual, Unit and Direct Support Maintenance Manual (Including Repair Parts and Special Tools List) for Night Vision Sight, Individual Served Weapon AN/PVS-4 (TM 11-5855-213-23&P)" 959:
However the AN/PVS-4 does have a reputation for holding zero and being able to withstand high recoil, making it popular amongst enthusiasts who are able to get a reasonable good condition item.
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The M16 reticle features a range-estimator and a three-point cross-hair that provides an aiming point for close range, 200m and 400m. The same reticle is also used for the M203 and the M79.
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A simple crosshair reticle can be seen on the photo taken through a surveillance AN/PVS-4. The image was taken during a wide-area blackout on a moonless night in a remote suburban area.
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The Star-Tron 426 is a surveillance device designed to make use of the Civilian version of the MX9644 tube, the F4845. It is thought that the F4845 were tubes that did not pass the
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A small surveillance scope intended primarily for Law Enforcement use, that is designed specifically to use surplus MX9644 tubes from AN/PVS-4s that are upgraded to Gen III tubes.
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The AN/PVS-4 is one of the most widely manufactured night vision sights in the world, with many countries making their own version either under license to the US or as a variant.
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The lower control is an on/off switch for the image intensifier tube and secondarily controls the gain of the tube, allowing the operator to control the brightness of the image.
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Although the military is phasing this unit out, older devices are frequently donated to police services for reuse and so the AN/PVS-4 is likely to remain in use for some time.
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Related development for driving based devices included Fiber Optic expanders that magnified the image and could be retrofitted to driving scopes that also used this tube.
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As a result, the AN/PVS-4 can be used in lighting conditions ranging from midday-sun in the desert, through to very-bright-moonlight and high levels of urban lighting.
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New Noga Light, a subsidiary of Star Night Technologies, manufactures a range of NVDs including the NL84, NL87 and NL89 variants of the AN/PVS4, AN/TVS5 and AN/PVS20
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There are also surveillance model derivatives specifically designed to use civilian versions of the tube, such as the Star-Tron, which uses the ITT F4845 25mm tube.
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The M60 reticle is similar to the M16 reticle but contains points rather than crosshairs for 200m, 400m and 600m. This reticle is used for the M14 and M249 also.
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Parts are still being sourced for repair and maintenance of the AN/PVS-4 as recently as 2008 suggesting this device is still in current use in the US Military.
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Originally manufactured by Optic-Electronic Corp in Texas, also manufactured by Varo (Litton), ITT and Northrop Grumman and Ni-Tec Inc. in Niles Illinois.
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The MX-9644 was later replaced by the MX-11620 Third-generation tube, which is a direct replacement for devices that were designed to use the MX-9644.
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Initial engineering development of the AN/PVS-4 was undertaken by Optic Electronic Corporation of Dallas, Texas, in 1975 as a replacement for the
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One of the unique capabilities of the AN/PVS-4 that is not available in many other night vision weapon sights is the field-changeable reticles.
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These pass by three larger aperture holes and three dark glass lenses to allow for six different levels of light reduction into the scope.
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The optics are considered exceptional, even by contemporary standards and the biggest drawback compared to modern scopes is the weight.
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The upper control is an on/off switch for the illuminated reticle and secondarily allows the brightness of the reticle to be adjusted.
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The result was that the tube produced an inverted image, simplifying the optical requirements of any night vision device that used it.
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of higher quality for professionals would have provided another option for shooters while the lower cost of first-generation consumer
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By replacing the reticle, the AN/PVS-4 is able to provide service to a wider variety of weapons than any other weapon sight including
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the AN/PVS-4 became one of the most widely used night vision scopes and has been in active use for more than a quarter of a century.
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lens and higher zoom level, it is rated with a detection range of over 1 Kilometer with a third-generation image intensifier tube.
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The AN/TVS-5 is an observation scope, although it does come with reticles and can be used as a weapon sight as well. With a larger
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As a result, very few people that do not have military, firearm or night-vision experience are likely to recognize one visually.
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exposure to bright light, but still recover in time after a muzzle flash for the operator to see the round hit the target.
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The NVS-700 is the original designation of the Optic Electronics Corp. AN/PVS-4. This model is also manufactured in Iran.
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The AN/PVS-4 is also commonly used for surveillance operations and surplus units are commonly donated to police forces.
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is the most basic reticle for the AN/PVS-4 and is available as either a simple crosshair, A mildot crosshair or as an
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are capable of gains well in excess of 100,000 times. The Stinger Night Sight is a good example of Gen3+1 technology.
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Elevation and Windage adjustment is made through turrets located on the objective lens. Each click equals 1/4 moa.
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The NVS-800 is the original des of the Optic Electronics Corp. AN/TVS-5. This model is also manufactured in Iran.
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The M67 reticle is similar to the M72A1 reticle, but contains range marks for 200, 400, 600, and 800 metres.
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The M72A1 reticle contains a rangefinder with marks for 100, 200, and 300 metres. This sight is used on the
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represented the first war in which ground combat operations continued both day and night through the use of
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16,927 more units were produced between 1985 and 1989 and 24,046 more units produced between 1990 and 1992.
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Variant information is taken from datasheets supplied by the manufacturer or published specifications.
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Much of the information above has been taken from the AN/PVS-4 service manual and operational manual.
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simultaneously. Rubber eye guard separation from the sight was a common problem that was addressed.
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In 1976, the first production contract was awarded for 47,074 units, and first deployed in 1978.
1221:"Development Test II (Service Phase) of Night Vision Sight, Individual Served Weapons, AN/PVS-4" 1337:"Operator's Manual, Night Vision Sight, Individual Served Weapon AN/PVS-4 (TM 11-5855-213-10)" 1008: 501:
When the Day/Night adapter is used, the image field of view is reduced and appears triangular.
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Operation of the device is through two controls located on the left side of the tube housing.
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thermal weapon sight began in 1996 and production of the AN/PVS-4 ceased entirely by 2002.
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Iran Electronics Industries manufacture the NVS-700(AN/PVS-4) and NVS-800(AN/TVS-5)
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was difficult to install and prone to loss of zero. The sight reticles for both the
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Euroatlas manufacture the AN/PVS-4 and AN/TVS-5 Night Vision Sights under license.
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By 2002, more than 150,000 units had been produced within the United States alone.
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Thales Optronics Systems manufacture the NVS-700(AN/PVS-4) and NVS-800(AN/TVS-5)
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Observation version of the AN/PVS-4 without a reticle, manufactured in Iran.
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The adapter consists of three hole sizes spaced evenly around the periphery
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assembly being housed in a container that matched the MX-9644 tube exactly.
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would have led to lower end consumers purchasing cheaper imported scopes.
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Binocular Night Vision scope, based on AN/TVS-5, manufactured in Iran.
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designation for a specification of the first second generation passive
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range finding circle and the lower three locations are for sighting.
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and has since been replaced by modern third-generation weapon sights.
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Binocular version of AN/PVS-4 without reticle, manufactured in Iran.
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Individual Night Vision Sight, With Reticle, manufactured in Iran.
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The Day/Night adapter allows use of the AN/PVS-4 during the day.
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US Marine with a M240G machine gun in the Persian Gulf, 2004.
854:(IOP) manufactures the AN/PVS-4 and AN/TVS-5 under license. 1168:
Federation of American Scientists Military Analysis Network
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New versions of this scope are being manufactured in Iran
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Although more modern equipment was available during the
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AN/TVS-5 derivative made in Israel by New Noga Light.
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Night Vision Sight, Individual Served Weapon, AN/PVS-4
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Extract from Janes regarding the AN/PVS-4 and NVS-700
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Tube information is taken from public specifications.
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Archived from 703:Shoulder-launched Multipurpose Assault Weapons 445:Subsequent Image Intensifier Tube Development 8: 1312:"Image Intensifier and Dark Hydrogen Clouds" 641:AN/PVS-4 made in Israel by New Noga Light. 1424:Military equipment introduced in the 1970s 18: 1419:Military electronics of the United States 672: 1164:"AN/PVS-4 Individual Weapon Night Sight" 1124:Euroatlas Night Vision Sight (AN/PVS-4) 364: 1154: 933:Cultural impact and civilian ownership 124:Optic Electronic Corporation of Dallas 108:Optic Electronic Corporation of Dallas 948:The availability of third-generation 7: 1225:Defense Technical Information Center 1195:"U.S. Patent Office Patent D273,960" 561:Brightness knob as low as possible. 14: 333:and later some deployment in the 184:320mm (l) x 120mm (h) x 100mm (w) 1219:Army Infantry Board (Dec 1974). 1059: 1040: 1020: 1001: 979: 27: 1283:Vondragonnoggin (20 Nov 2015). 1193:Carl P. Kummer (May 22, 1984). 1035:(Special Operations Group, GEO) 673:ITT's F4960 Stinger night sight 286:Northrop-Grumman Gen3 MX-11620, 284:Northrop-Grumman Gen3 MX-11619, 1015:and police Special Task Units. 429:MX-9644 Image Intensifier Tube 377:era AN/PVS-2 Starlight Scope. 137: 1: 1033:Grupo Especial de Operaciones 16:US passive night vision scope 270:ITT F4845 (civilian Gen3+1), 1199:United States Patent Office 825:Stinger night sight reticle 1445: 996:Royal Australian Air Force 813:F4960 Stinger night sight 278:Northrop Grumman MX-9644, 47:Place of origin 26: 1116:Manufactured in Pakistan 276:ITT F9860 Gen3 FO+twist, 274:ITT F4849 Gen3 FO+twist, 1285:"PVS-4 Gen 3 Astronomy" 1258:Jane's Infantry Weapons 1070:: Formerly used by the 1051:: Formerly used by the 830:Location of manufacture 691:Squad Automatic Weapons 290:Alpha Optics AC-22525R, 288:Newcon Optik NC107663I, 189:Resolution (lp/mm) 181:Dimensions (L×H×W) 33:"PVS-4 Starlight Scope" 1310:cnoct (8 March 2014). 1120:Institute of Optronics 852:Institute Of Optronics 826: 809: 793: 773: 757: 741: 717: 502: 494: 370: 355:Image Intensifier tube 296:DEP-Photonis XX-2052Q, 1013:Georgian Armed Forces 824: 807: 791: 771: 755: 739: 715: 500: 492: 368: 304:Harder Digital XX1450 294:DEP-Photonis XX-2050, 292:Noga Light Type 6014, 1429:Night vision devices 1381:on 24 September 2016 1174:on 24 September 2021 992:ground defence units 954:night vision devices 939:night vision devices 756:M16/M203/M79 reticle 403:night vision devices 241:Range of recognition 1084:Night Vision Device 1053:Turkish Land Forces 990:: Formerly used by 716:Mildot-type reticle 324:Night vision device 265:Can use these tubes 61:Night Vision Device 1291:. Southern CA, USA 1234:on August 16, 2016 1141:2011-07-17 at the 827: 810: 794: 774: 758: 742: 718: 503: 495: 371: 353:Using the MX-9644 298:HiOptic 1XZ25/25W, 233:Range of detection 100:Production history 1072:U.S. Marine Corps 707:recoilless rifles 699:grenade launchers 485:Day/night adapter 308: 307: 302:Ei-SOVA XX-2500, 282:MX9644/UV Gen3+1, 272:ITT F4844 Gen3+1, 221:Field of vision ( 197:Mode of Operation 1436: 1391: 1390: 1388: 1386: 1380: 1373: 1365: 1359: 1358: 1356: 1354: 1349:on 15 April 2015 1348: 1341: 1333: 1327: 1326: 1324: 1322: 1316:CloudyNights.com 1307: 1301: 1300: 1298: 1296: 1289:CloudyNights.com 1280: 1274: 1273: 1271: 1269: 1260:. Archived from 1250: 1244: 1243: 1241: 1239: 1233: 1216: 1210: 1209: 1207: 1205: 1190: 1184: 1183: 1181: 1179: 1170:. 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Retrieved 1172:the original 1167: 1157: 967: 964: 961: 958: 947: 943: 936: 928: 924: 921: 912: 904: 901: 898: 895:Surveillance 885: 877: 869: 861: 849: 841: 833: 816: 800: 780: 764: 761:M60/M14/M249 748: 745:M16/M203/M79 733:crosshair. 724: 688: 685: 676: 668: 656: 648: 640: 632: 624: 616: 608: 600: 592: 583:catadioptric 580: 571: 568: 559: 555: 538: 534: 521: 517: 514: 511: 508: 504: 480: 477: 474: 471: 463: 459: 455: 451: 448: 439: 436: 432: 423: 407: 392: 388: 385: 382: 379: 372: 352: 348: 344: 341:Introduction 328: 315: 311: 309: 269: 268:ITT FX9860, 228:14.5 degrees 143:> 150,000 121:Manufacturer 80:Used by 75:1978–present 950:riflescopes 808:M67 reticle 531:Limitations 393:During the 375:Vietnam War 249:System zoom 140: built 1413:Categories 1095:References 1011:: Used by 613:Auto NVS-2 605:Auto NVS-1 257:Generation 987:Australia 909:Astronomy 874:Singapore 727:crosshair 721:Crosshair 653:Star-Tron 637:IWS NL-84 629:NVS-T 800 621:NVS-T 700 550:M14 rifle 546:M16 rifle 468:Operation 414:AN/PAS-13 318:) is the 151:AN/TVS-5, 132:1977–2002 1139:Archived 1078:See also 846:Pakistan 731:aimpoint 682:Reticles 577:AN/TVS-5 565:Variants 410:Iraq War 399:Gulf War 395:Gulf War 335:Iraq War 331:Gulf War 312:AN/PVS-4 192:32 lp/mm 153:NVS-700, 148:Variants 129:Produced 113:Designed 105:Designer 57:Category 22:AN/PVS-4 1385:11 June 1353:11 June 1321:13 July 1295:13 July 1268:10 June 1238:13 July 1204:11 June 1178:11 June 1118:by the 1009:Georgia 994:of the 918:Summary 858:Germany 783:M72 LAW 772:M14-M60 659:milspec 597:NVS-800 589:NVS-700 361:History 205:II tube 200:Passive 155:NVS-800 42:Passive 1064:  1048:Turkey 1045:  1025:  1006:  984:  882:Israel 208:MX9644 172:(1800 165:Weight 1379:(PDF) 1372:(PDF) 1347:(PDF) 1340:(PDF) 1232:(PDF) 1131:Janes 1111:Janes 1028:Spain 972:Users 777:M72A1 665:NVM-4 645:NL-87 1387:2016 1355:2016 1323:2016 1297:2016 1270:2022 1240:2016 1206:2016 1180:2022 866:Iran 850:The 725:The 705:and 548:and 252:3.6x 216:25mm 168:4.0 116:1975 90:Wars 39:Type 797:M67 138:No. 1415:: 1314:. 1287:. 1256:. 1223:. 1197:. 1166:. 1031:: 785:. 709:. 701:, 697:, 693:, 527:. 405:. 326:. 170:lb 1389:. 1357:. 1325:. 1299:. 1272:. 1242:. 1208:. 1182:. 314:( 260:2 225:) 223:° 176:) 174:g

Index


United States
Night Vision Device
United States
Persian Gulf War
lb
g
°
U.S. military
Night vision device
Gulf War
Iraq War
Image Intensifier tube

Vietnam War
Gulf War
Gulf War
night vision devices
Iraq War
AN/PAS-13


depth of field
M60 machine gun
M16 rifle
M14 rifle
catadioptric
milspec
Squad Automatic Weapons
rocket launchers

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