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5.5 XF
(Crystal Filter)
BOARD
(X51-1010-10)
(See Figure 18)
USB FIL
This circuit filters one of the sidebands from the DSB signal
from the generator unit. The circuit employs a 3 MHz band
crystal filter. Separate USB and LSB filters keep the carrier
frequency unchanged (3.395 MHz) between sidebands.
LSB FIL.
The USB filter serves as the CW filter when the optional CW
filter is not used.
The optional CW filter can be easily inserted into the circuit
cw
FIL
when desired.
(Optional)
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XF Unit (X51-I010-10)
FIGURE 19.
XF Schematic
25
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