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FT-897 Alignment
Vertex Standard Co., Ltd.
7
FM Squelch Adjustment
a. Tune the transceiver to 144MHz band on FM m ode. Confirm that the squelch knob is turned
to fully counterclockwise.
b. Select the menu item "FM-TH1" and press [A] key without antenna input to set the
parameter. Select the menu item "FM-TH2" and press [A] key again.
c. Inject a RF signal from a signal generator at 3dBu output, 3.5KHz deviation FM modulation
of 1KHz AF. Select the menu item "FM-TI1" and press [A] key to set the parameter. Select the
menu item "FM-TI2" and press [A] key again.
Pow er Supply Voltage Adjustment
a.
Tune the transceiver to 144MHz band on FM mode. Confirm that the power supply voltage is
13.8V ±0.1V.
b.
Select the menu items "VCC" and adjust the parameter for "138" displayed on LCD.
Over-current Protection Adjustment
a.
Set the mode on CW. Select the menu item "HF1-IC". Tune the transceiver to 1.8MHz band and
key the transceiver. Adjust the parameter for 120W transmission power.
b.
Other over-current protection adjustment menu, "HF2-IC", "HF3-IC", "50M-IC", "V HF-IC", and
"UHF IC" should be adjusted as the same routine on 7MHz, 21MHz and 50MHz band respectively.
c.
Set the mode on CW. Select the menu item "VHF-IC". Tune the transceiver to 144MHz band and
key the transceiver. Adjust the parameter for 60W transmission power.
d.
Set the mode on CW. Select the menu item "UHF-IC". Tune the transceiver to 430MHz band and
key the transceiver. Adjust the parameter for 25W transmission power.
RF Pow er Adjustment
a.
Tune the transceiver to 1.8MHz band on CW mode. Select the menu item "HF1 -MAX". Key down
and adjust the parameter for 100W ±5W transmission power.
b.
Select the menu item "HF1-MID2" Key down and confirm that the output power is 50W ± 5W. In
case the transmission power is not within the tolerance, adjust the parameter for 50W ± 5W
transmission power.
c.
Select the menu item "HF1-MID1" Key down and confirm that the output power is 10W ± 1W. In
case the power is not within the tolerance, adjust the parameter for 10W ±1W transmission power.
d.
Select the menu item "HF1-MIN". Key down and confirm that the output power is 5W ± 1W. In
case the power is not within the tolerance, adjust the parameter for 5W ±1W transmission power.
e.
Other RF power adjustment menu, such as [HF2-**], [HF3-**], [50M-**], [VHF-**], [UHF-**] should
be adjusted as the same routine on 7MHz, 21MHz and 50MHz band respectively.
f.
Tune the transceiver to 144MHz band on CW mode. Select the menu item "VHF-MAX". Key down
and adjust the parameter for 50W ±2.5W transmission power.
g. Select the menu item "VHF-MID" Key down and confirm that the output power is 20W ±
