"gareth"  wrote in message 
...
 Is backlash in tuning mechanisms necessarily a problem, because
 a little bit of looseness in the drive means that an accidental nudge of 
 the
 tuning control won't cause a frequency change, as it would if
 tightly-coupled and backlash free?
A sign of a good operator is the ability to just deal with minor quirks such 
as this without moaning.
-- 
;-)
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73 de Frank Turner-Smith G3VKI - mine's a pint.
..
http://turner-smith.uk