In article ,
says...


Update:

It appears this whole topic is meaningless and the result of
somebody's error.

It turns out that all current GA nav radios support 50kHz spacing
(therefore 40 channel glideslope). A few very old (Narco 12A with UGR2
glideslope Rx's ?) units may still be around, but all Garmin and
Honeywell and Narco equipment produced in the last 20 years or more is
certainly compliant.


You should inform the appropriate authorities (French DGAC) of your
discovery. Also Garmin, Bendix King and others, who list their
specifications for glideslope spacing as 150KHz.

Do you have any documentation for your assertions?
This would be a start. . .