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Neptun (radar)

Neptun (Neptune) was the code name of a series of low-to-mid-VHF band airborne intercept radar devices developed by Germany in World War II and used as active targeting devices in several types of aircraft. They were usually combined with a "backwards warning device", indicated by the addition of the letters "V/R" Vorwärts/Rückwärts, meaning Forward/Backward). Working in the metre range, Neptun was meant as a stop-gap until scheduled SHF-band devices became available.

Variants
FuG 216: Experimental series to plan the further development. Installed in Fw 190 A-6/R11 and Bf 109 G-6 The aircraft were used by NJGr 10 until March 1944, after which some machines of 6./JG 300 () were equipped. • Manufacturer: (FFO, German for airborne radio research institut in Bavaria) • R1 version (backwards warning device) :*Frequency: 182MHz :*Power: 1.0kW :*Transmitting and receiving antennas each consist of twin dipoles, mounted under and above the wings, respectively :* Single display device with distance readout • V version (for single engined night fighters) :*Frequency: 125MHz :*Power: 1.2kW :*Range: 500 to 3,500m :*Antennas in the form of spikes or (Fw 190) as "antlers" on right and left wings FuG 217: Installed mainly in Ju 88 G-6, only a few Bf 110 G-4, He 219 or Me 262 received the . It could be combined with the additional device to automatically measure the target distance and fire the guns at a set range. • Manufacturer: FFO • R2 version (backward warning device) • J2 version (for single-engined night fighters) • V/R (combined night fighter and backward warning device for two-engined fighters) :*Two switchable frequencies: 158 and 187MHz :*Search angle: 120° :*Range: :*Spike or "antler" antennas FuG 218: mass-produced • Manufacturer: Siemens / FFO • R3 version (backward warning device) • J3 version (for single-engined night-fighters) • V/R version (combined night fighter and backward warning device for two-engined fighters) :*Six switchable frequencies: 158 to 187MHz :*Search angle: 120° :*Range: :*Weight: :*R3 and J3 with spike antennas and V/R with "antler" antennas. • G/R version (combined night fighter and backward warning device for two-engined fighters) :*Only one single device built, replacing the 2kW transmitter with a 30kW transmitter. Range increased to up to . This device was intended for the Dornier Do 335. "Antler" antennas. == See also ==
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