[Openbts-discuss] Amplitude variation in TX?

[Ralph A. S. d. <ra...@sc...>]

Hi,

As I am back again with full TX power (thanks, Tom!), I noticed that the
signal produces the typical 1.7something KHz tone in the PC speakers here in
the office. As this is GMSK there should be only some frequency/phase
variation, at constant amplitude. Also the bandwidth is small enough that I
do not expect differing sensitivity of the PC speaker from the frequency
deviation. 283 KHz are nothing at 1800 MHz :) So why can I hear the frame
rate in the speakers? Did I miss something, or is there some inconsistency
in the modulation code, causing some amplitude variations? 

Ralph.