The development and testing of fiber optic coils designed for fiber optic lengths of 40, 45 and 50 km have been completed.
This collection of extended range coils is called "Air" - 150mm diameter, reinforced, updated;.
- with and without built-in fastening; - Domes of 3 types for bearings 18, 22 mm and eyelets; - Inserts of 3 types for transmitters and blinds;.
- Fastening a dovetail to the body. and reserve at MAX.