Sender Ederkopf, Radio transmission tower on the Oberste Henn near Netphen, Germany.

Sender Ederkopf is a concrete transmission tower standing on the Oberste Henn mountain that reaches approximately 161 meters in height. Located at around 676 meters above sea level, the tower broadcasts digital radio signals to the surrounding mountainous region.

The concrete tower was constructed in 1981 by Westdeutscher Rundfunk and began broadcasting in November 1982. Since its operation began, it has continuously transmitted radio signals to the region.

The tower carries WDR's 1 Live, WDR 2, WDR 4 and WDR 5 on FM, with WDR 5 at 20 kW and 1 Live and WDR 4 at 15 kW each; WDR 2 on 101.8 MHz runs at only 11 kW to protect hr4 on 101.7 MHz in Hesse. Since 29 August 2012 the site has also broadcast the DAB+ multiplex Radio für NRW on channel 11D.

The site lies in dense forest on the Oberste Henn, a few metres west of the Erndtebrück municipal boundary and about 1 km north of the Eder spring. A plaque on the tower gives the elevation as roughly 676 m. The tower is not open to visitors; the surrounding forest tracks are the only access.

The antenna design uses directional characteristics to focus signals specifically over the Rothaar Mountains rather than radiating in all directions. This targeted approach helps reach the scattered mountain villages across the region more effectively.