Specifications

In this case, you should select the FSK or RTTY operating mode.
Adjust the volume to a comfortable listening level.
7.2.6 Tuning in AMTOR Stations
Tuning in AMTOR stations properly is critical to successful operation.
Since HF AMTOR stations use either 170 Hz or 200 Hz Frequency Shift
Keying to send data, tuning accuracy is very important. The BARgraph
command will select the type of tuning display. (See the display type
below). Follow the procedure below for the best results.
o Make certain your HF receiver is either in LSB or FSK depending
on your PK-900 set-up.
o Turn any IF-Shift and Passband-Tuning controls to the Center or
OFF position.
o Tune your receiver carefully between 14.065 and 14.085 MHz (or
another band where you know there is AMTOR activity) and listen
for the "chirp chirp" of ARQ or the steady data of FEC stations.
NOTE: When in the AMTOR Standby mode as you are now, you will not
be able to print the "chirping" ARQ signals. To print these
stations, you must be in the AMTOR Listen (ALIST) mode.
o When you find a station, slowly vary the VFO on your receiver and
look for a display on the PK-900 tuning indicator as shown.
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MARK |       | SPACE
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Tuning correct for discriminator indicator (BAR 0)
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|                 |
——————————————————————————————————————————————————————————————
Tuning correct for magic eye indicator (BAR 3)
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|   |
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Tuning correct for center tune indicator (BAR 2)
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