| Author | Message | | | eric | | Posted: Fri Sep 01, 2006 12:21 pm Post subject: RF marker generator | | | | Site Admin Joined: 01 Jan 1970 Posts: 311 | Anyone involved in
the construction of
radio receivers and
associated equipment
will have felt the need
for some means of
producing an accurately
calibrated dial.
The ability to confidently
set the tuning
to a particular frequency
is often half
the battle when
searching for a weak
transmission, and
greatly increases the
pleasure of using a
receiver of any kind.
The calibrator
described here relies
on a quartz crystal to
determine and hold
constant the frequency
of the oscillator
providing the
marker signals.
14
Design by Raymond Haigh
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