It is not practical to provide monitoring for
erroneous operation could occur without a
fault indication. It is the responsibility of
the pilot to detect such an occurrence by
means of cross-checks with redundant or
correlated information available in the
(1) Equipment Turn On. The ADF-60
receiver and the CTL -62 ADF control are turned on by
rotating the power and mode switch on the ADF
control to the ANT, ADF, or TONE position.
After power is applied, the CTL -62 displays the
same active and preset frequencies that were preset
when the equipment was last turned off.
selection is made using either the frequency select
knobs, the XFR / MEM (transfer/memory recall switch).
For future developments, the CTL -62 has a
normal frequency range of 190.00 to 1799.5 kHz.
However, when used with the ADF-60, the upper
frequency is limited to 1749.5 kHz. Rotation of either
frequency select knob increases or decreases the
frequency in the preset frequency display. The larger
outer knob changes the frequency in 1000- and 100-
kHz increments (first and second numbers from the
left). The smaller inner knob changes the frequency in
10's, units, and tenths kHz increments (third, fourth,
and fifth numbers from the left).
After the desired frequency is set in the preset
frequency display, it can be transferred to the active
frequency display by momentarily setting the XFR /
MEM switch XFR. At the same time that the preset
frequency is transferred to the active display, the
previously active frequency is transferred to the preset
display. The ACT annunciator on the control flashes
while the receiver is tuning to the new frequency.
If the ACT annunciator continues flashing,
it indicates that the receiver is not tuned to
the frequency displayed in the active
The CTL-62 has a memory that permits storing
up to four preset frequencies. Once stored, these
frequencies can be recalled to the preset display by
positioning the XFR / MEM switch to the MEM
position. The storage location (CH 1 through CH 4) for
the recalled frequency is displayed in the active
frequency display while the XFR / MEM switch is held
in the MEM position. All four stored frequencies can
be displayed one at a time in the preset display by
repeatedly positioning the XFR / MEM switch to the
MEM position. After the desired stored frequency has
been recalled to the preset display, it can be
transferred to the active display by momentarily
positioning the XFR / MEM switch to the XFR position.
During normal operation, all frequency selections
and revisions are done in the preset frequency display.
However, the active frequency can be selected
directly, as described in the following paragraph.
(3) Direct Active Frequency Selection. The
active frequency can be selected directly with the
frequency select knobs by pushing the ACT button for
about 2 seconds. The active frequency selection
mode is indicated by dashes appearing in the preset
display. Also, the ACT annunciator will flash as the
frequency select knobs are turned to indicate that the
transceiver is being re-tuned.
If the ACT annunciator continues flashing
after the frequency has been selected, it
indicates that the receiver is not tuned to
the frequency displayed in the active
To return to the preset frequency selection
mode, merely push the ACT button again for about
As a safety feature, the CTL-62 automatically
switches to the active frequency selection mode when
a frequency select knob is operated while the STO,
TEST, or XFR / MEM switches are actuated, or the
memory recall inputs to the control are grounded.
(4) Frequency Storage. Up to four preset
frequencies can be stored in the memory in the
CTL -62 for future recall. To program the memory,
select the frequency in the preset frequency display
using the frequency select knob and push the STO
button once. One of the channel numbers (CH 1
through CH 4) will appear in the active display for
approximately 5 seconds. During this time, the
channel number can be changed without changing the
preset frequency by momentarily positioning the XFR /
MEM switch to the MEM position. After the desired
channel number has been selected, push the STO
button again to store the frequency.