Rx Gain Adjustment; Fm S-Meter Adjustment - Yaesu FT-897 Manual

RX Gain Adjustment

a. Select the CW mode. Tune the transceiver to 1.8MHz band. Select "HF1RXG" in the menu by
rotating VFO/M-CH knob. Inject a RF signal from a signal generator at 2dBu output.
b. Set the parameter "HF1RXG" at the value of lighting the first dot of the S-meter (S1) on the LCD by
rotating the main dial.
c. Other RX gain adjustment should be performed as this routine. Output levels of the signal
generator at each frequency are shown as follows.
Frequency Output Level of SG
1.8MHz Band
7MHz Band
21MHz Band
50MHz Band
144MHz Band
430MHz Band
SSB S-Meter Adjustment
a. Tune the transceiver to 21MHz band on CW mode. Inject a RF signal from a signal gen erator at
36dBu output.
b. Set the parameter "SSB-S9" at the value of lighting the 6 dots of the S-meter (S9) on the LCD by
rotating the main dial.
c. Tune the transceiver to 21MHz band on CW mode. Inject a RF signal from the signal generator at
86dBu output.
d. Set the parameter "SSB-FS" at the value of lighting all the dots of the S-meter on the LCD by
rotating the main dial.

FM S-Meter Adjustment

a. Tune the transceiver to 144MHz band on FM mode. Inject a RF signal from a signal generator at
-3dBu output, 3.5KHz deviation FM Modulation of 1KHz AF.
b. Select the menu item "FM-S9" and press [A] key to set the parameter.
c. Increase the output level of the signal generator up to 22dBu. Select the menu item "FM-FS" and
press [A] key to set the parameter.
FM Center Meter Adjustment
a. Tune the transceiver to 144MHz band on FM mode. Inject a RF signal from a signal generator at
10dBu output, 3.5KHz deviation FM Modulation of 1 KHz AF.
b. Set the frequency of the signal generator 3KHz below the receiving frequency of the transceiver.
Select the menu item "DISC-L" and press [A] to set the parameter.
c. Set the frequency of the signal generator 3KHz above the receiving frequency of the transceiver.
Select the menu item "DISC- H" and press [A] to set the parameter.
12 dBu
12 dBu
9 dBu
0 dBu
0 dBu
0 dBu
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FT-897 Alignment
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