PNK-6

The PNK-6 (Ukrainian: ПНК-6) is a Ukrainian commander's panoramic tank optic used on the T-84 Oplot-M tank. It was developed by the Sokol Central Design Bureau (TsKB Sokol) and later by its successor NPK Fotopribor (now part of UkrOboronProm) which produced the optic. It combines features such as a day sight, a thermal sight and a laser rangefinder. It also features duplicate controls of the gunner's station, allowing the tank commander to operate the weaponry.

While the T-84 Oplot-M has been the only application thus far, the optic has also been offered to be used on Ukrainian T-64B, T-72 and T-80 tanks.



Features and specifications
The system has a two-axis stabilizer with a 0.05 milliradian error margin. It can traverse all around with a minimum elevation of -20° and a maximum of 60°. The daylight optic has three magnification levels to choose between: 1.2×, 6× and 12×. The maximum effective range where a tank target can be identified is 5500 metres.

Thermals
The thermal camera is based on the Catherine-FC from the French company Thales, similar to the Russian Sosna-U gunner's sight. The identification range on the thermal camera is 500 metres less than the day channel, giving a maximum of 5000 metres for detection.

Laser rangefinder
The laser rangefinder of the system has a minimum range of 200 metres and a maximum range of 9500 metres.

Components
The PNK-6 sight complex features multiple subcomponents.


 * TKN-6 - The optical instruments which are on the tank exterior
 * EB-6 - Electrical unit
 * BUG-6 - Main control unit
 * BK-6 - Switching unit
 * Four-bar linkage drive unit
 * Gun position sensor
 * Weaponry traverse control unit
 * Thermal optics control panel