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RNAS Inskip or as it was otherwise known HMS Nightjar is a former Fleet Air Arm airfield near the village of Inskip, Lancashire, England at .
The site today is still owned by the Royal Navy and is now home to DCSA Inskip, a tri-service communication centre. Most of the communications that happen there are low frequency radio communications to submarines. The current station has four 600 feet high aerials and several other smaller aerials.
Back in the 1980s there were Marconi 50 kW transmitters operating in the VLF band, transmitting Morse to ships close to the UK.
For long distance work, the shortwave bands were used, again transmitting Morse to ships mostly based on Marconi transmitters, typically 10 kW or less. The same information would be transmitted on different frequencies and it was the ship's responsibility to find the right frequency to monitor. This was because of the different propagation characteristics of the various frequencies used.
The site has been used in the past to store natural, purified uranium ore (known as yellowcake) as part of the UK's reserve of such material.
The following units were here at some point:
- 735 Naval Air Squadron
- 737 Naval Air Squadron
- 747 Naval Air Squadron
- 760 Naval Air Squadron
- 762 Naval Air Squadron
- 763 Naval Air Squadron
- 766 Naval Air Squadron
- 787 Naval Air Squadron
- 811 Naval Air Squadron
- 813 Naval Air Squadron
- 816 Naval Air Squadron
- 819 Naval Air Squadron
- 825 Naval Air Squadron
- 828 Naval Air Squadron
- 838 Naval Air Squadron
- 1791 Naval Air Squadron
- 1792 Naval Air Squadron
Sea Cadet Training Centre Inskip, a national training centre to the Sea Cadet Corps, was situated on the same site until its closure on 31 Jan 2010, bringing to an end 68 years of uniformed presence in Inskip.
In January 2012, the former SCTC Inskip reopened as the Inskip Cadet Centre and is now the new home of Cumbria & Lancashire Wing, Air Training Corps. Appropriately the Wing Headquarters Offices are situated in what was the old Watch Tower when RNAS Inskip was a flying station.
The runway was demolished in the 1970s. The concrete from it was used to build the M55 motorway, from which the aerials can be clearly seen. Today only the smaller taxiways exist as proof of the airfield's former existence.