Thread: Backlash?
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Old January 24th 16, 09:53 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
Brian Reay[_5_] Brian Reay[_5_] is offline
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First recorded activity by RadioBanter: Aug 2013
Posts: 393
Default Backlash?
On 24/01/2016 19:30, wrote:

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?

And conversely, if what you WANT is a little nudge, you are out of luck.

Not really, you can still give the frequency determining element
(usually a variable C) a small nudge.

The anti-backlash gears are to improve consistency, for example between
the frequency dial and the variable C position.

Any apparent 'slack' between the tuning control knob and the variable C
don't really matter, unless it is significant, as the user will soon
ignore it. What you don't want is 'slack' between the dial and the
variable C.


Of course ALL this is solved with modern tuning controls with an
adjustable rate.



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