An ultra-rare photo of a P57N direction finder in use. Note the two men with the transit-compass to the left. They are keeping a certain deistance from the P57N so that it's electro-magnetic field does not affect the compass. This ensures that the most accurate compass reading is taken of the detected signal.

A great photo showing a standard "modern" radio direction finding van. Here you have the EP1 and EP2 direction finding receivers. A radio clock is also visible here.

Peilempfänger E535F or E556F (72.5 - 527 kHz) used with H-Adcock-Anlage Fu Peil A40b

 

 

Peilempfänger (direction finding receiver) E535F or E556F (72.5 - 527 kHz) used with H-Adcock-Anlage Fu Peil A40b

 

 

Antenna of the H-Adcock-Anlage Fu Peil A40b (Trenkle: Die deutschen Funkpeil und Horch-Verfahren bis 1945)