The SODART telescope with two parallel 8 m focal length mirror systems and
eight different focal plane instruments, four for one mirror system and fou
r for the other one, is the largest instrument on board the SPECTRUM-RONTGE
N-GAMMA satellite. Among the focal plane instruments are two identical posi
tion sensitive detectors, KFRD, based on multiwire proportional counters.
The energy band of the KFRD detector is 2-25 keV.