'Night Effect' which causes loss of signal and fading, resulting in bearing errors from NDB transmissions, is due to:

1) A VOR and an ADF are co-located. In NIL wind conditions you cross the VOR radial of 240 on a heading of 360°(M). In the vicinity of the station you should read an  ADF bearing of:

2) Factors liable to affect most NDB/ADF system performance and reliability include:

3) In order to obtain an ADF bearing on a system using sense and loop aerials, the:

4) 'Night Effect' which causes loss of signal and fading, resulting in bearing errors from NDB transmissions, is due to:

5) Quadrantal errors associated with aircraft Automatic Direction Finding (ADF) equipment are caused by: