Meindert Sprang wrote:

I wondered about the inherent non-linearities and, of course, the
deviation at which the SINADs were measured is not known, either.


The SINAD is measured with a single tone and the measured audio output is
bandwidth limited with a filter with strict specifications, commonly known
as as CCITT or P53 filter.



Hello Meindert,

My comment about deviation referred to the fact the the EIA standard
specifies that the signal generator deviation be at 60% of the peak
deviation used for that service (if I recall correctly). While it is
probably safe to assume that the peak deviation was the same for all
three receivers, there is no way of knowing whether SINAD was measured
using the specified 60% deviation.

Chuck