alan ralph wrote...

Looking on the Web I see very little information about this tuner, apart
from one for sale in France and the other in New Zealand. Any ideas why ?

The L indicates that it has Long wave as well as FM/AM so a ST-40 would
be functionaly identical if you can find a manual for that.

hiFiengine.com , which is treasure trove of manuals and info
for electronic equipment has a manual (in german) for the ST-50
Which is one of the same range at
http://www.hifiengine.com/manuals/marantz/st-50.shtml

Another handy site for older audio kit is
hifigoteborg.se which shows it to date from 92-93
http://www.hifigoteborg.se/Price_marantz_stereo.htm

--
Ken
Analogue link site:
http://www.members.lycos.co.uk/buddyduck/