EIP 545A - Page 38

After each
measurement, the frequency of the IF is examined. If the input frequency has shifted more
than
10 MHz, new frequencies for the YIG and VCO are calculated to restore the IF to 125 MHz. This
method provides rapid tracking of a signal being tuned.
PATT- MIN
CONTROL
INCREMENT
FYIG
64 MHz
THRESHOLD
FYIG FHIGH
SIGNAL
Figure 4-8. DETECTED
INCREMENT
FY IG
64 MHz
/ Figure 4-8.
Figure 4-7.
Band 3 Search For Signal
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