Abstract: Method and apparatus to produce a wideband RF signal covering an increased first bandwidth, utilizing at least one narrowband transceiver (1) capable of producing an output RF signal with a base frequency fbase and a second bandwidth, wherein the second bandwidth is lower than the first bandwidth, and wherein the base frequency Case depends on the setting of at least one frequency register (2, 2?, 2?), which is adjustable by a control unit, as well as method to estimate the position of a narrowband RF transceiver (1) using a multitude of coherent wideband RF receivers (12) and computer-readable medium comprising computer-executable instructions causing an electronic device to perform the method.