Specifications

10.2.1 Tuning in FSK Narrow and Wide Stations
Tuning in the Frequency Shift Keying (FSK) signal properly is critical
to successful SIAM operation. SIAM can only decode a signal properly
if it is tuned correctly. Follow the tuning procedure below carefully
for the best results in tuning HF FSK stations.
o Set the default Signal Identification modem (QSIGNAL) to the
number you wish to use.
o Make certain your HF receiver is either in LSB or FSK depending
on your PK-900 setup.
o Turn OFF any IF-Shift and Passband-Tuning controls.
o Tune your receiver carefully across the band looking for the
distinctive two tone sound of an FSK signal.
o When you find a station, slowly vary the VFO tuning knob on
your receiver and look for a display on the PK-900 tuning
indicator like the one shown below.
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MARK |       | SPACE
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Tuning correct for discriminator indicator (BAR 0)
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|                 |
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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)
3/93 10-2