Hi
The tempco gotcha' with the10811 relates to crystal yields.
With a true SC, the operating point on the 10811 is very close to the middle
of the crystal curve (inflection temperature). You can indeed have a crystal
with no turning points (temperature zero TC points). All it has to do is to
List,
Wrote Some on this list mentioned having had less-than-optimal performance
with their HP 10811 series oscillators. James Miller G3RUH made a slight
mention of optimizing performance by readjusting the set point temperature in
one of his phase detector articles. He said though time
Perry Sandeen wrote:
List,
WroteSome on this list mentioned having had less-than-optimal performance with
their HP 10811 series oscillators. James Miller G3RUH made a slight mention of
optimizing performance by readjusting the set point temperature in one of his
phase detector articles. He
Gents,
Some on this list mentioned having had less-than-optimal performance with their
HP 10811 series oscillators. James Miller G3RUH made a slight mention of
optimizing performance by readjusting the set point temperature in one of his
phase detector articles. He said though time consuming
Regardless of isolated anecdotal data on one oscillator, it
is probably not advisable to change the set point. The majority
of 10811 crystals do NOT have a turnover, only a region of
low tempco around 82 degrees.
Instead of that, change the circuit to B-mode and optimize
the heat between the two
