20
Over-current Protection Adjustment
1. Set the transceiver to the CW mode.
2. Select menu item “
18: HF1-IC
.” Tune the transceiver
to the 1.8 MHz band and key the transceiver. Adjust
this parameter for 140 Watts of transmission power.
3. Select menu item “
19: HF2-IC
.” Tune the transceiver
to the 7 MHz band and key the transceiver. Adjust this
parameter for 130 Watts of transmission power.
4. Select menu item “
20: HF3-IC
.” Tune the transceiver
to the 21 MHz band and key the transceiver. Adjust
this parameter for 130 Watts of transmission power.
5. Select menu item “
21: 50M-IC
.” Tune the transceiver
to the 50 MHz band and key the transceiver. Adjust
this parameter for 120 Watts of transmission power.
6. Select menu item “
22: VHF-IC
.” Tune the transceiver
to the 144 MHz band and key the transceiver. Adjust
this parameter for 60 Watts of transmission power.
7. Select menu item “
23: UHF-IC
.” Tune the transceiver
to 430.000 MHz and key the transceiver. Adjust this
parameter for 25 Watts of transmission power.
Alignment
RF Power Adjustment
1. Tune the transceiver to the 1.8 MHz band in the CW
mode.
2. Select menu item “
24: HF1-MAX
.” Key the transmit-
ter, and adjust this parameter for 100 Watts (±5 W) of
transmission power.
3. Select menu item “
25: HF1-MID2
.” Key the transmit-
ter, and confirm that the output power is 50 W (± 5W).
In case the transmission power is not within the speci-
fied tolerance, adjust this parameter for 50 W (± 5 W)
of transmission power.
4. Select menu item “
26: HF1-MID1
.” Key the transmit-
ter, and confirm that the output power is 10 W (± 1
W). In case the power is not within the specified toler-
ance, adjust this parameter for 10 W (±1 W) of trans-
mission power.
5. Select menu item “
27: HF1-MIN
.” Key the transmit-
ter, and confirm that the output power is 5 W (±1 W).
In case the power is not within the specified tolerance,
adjust this parameter for 5 W (±1 W) of transmission
power.
6. The other RF power adjustment menus, [
HF2-
**
] and
[
HF3-
**
], should be adjusted in the same manner as
shown above for the 7 MHz and 21 MHz bands re-
spectively.
7. Tune the transceiver to the 50 MHz band in the CW
mode.
8. Select menu item “
36: 50M-MAX
.” Key the transmit-
ter, and adjust this parameter for 100 W (±5 W) of
transmission power.
9. Select menu item “
37: 50M-MID2
.” Key the trans-
mitter, and confirm that the output power is 50 W (±5
W). In case the transmission power is not within the
specified tolerance, adjust this parameter for 50 W (±5
W) of transmission power.
10.Select menu item “
38: 50M-MID1
.” Key the trans-
mitter, and confirm that the output power is 20 W (±
2W). In case the power is not within the specified tol-
erance, adjust this parameter for 20 W (±2 W) of trans-
mission power.
11.Select menu item “
39: 50M-MIN
.” Key the transmit-
ter, and confirm that the output power is 5 W (+0/–1
W). In case the power is not within the specified toler-
ance, adjust this parameter for 5 W (+0/–1 W) of trans-
mission power.
12.Tune the transceiver to the 144 MHz band in the CW
mode.
13.Select menu item “
40: VHF-MAX
.” Key the transmit-
ter, and adjust this parameter for 50 W (±2.5 W) of
transmission power.
14.Select menu item “
41: VHF-MID
.” Key the transmit-
ter, and confirm that the output power is 20 W (±2 W).
Summary of Contents for FT-857 series
Page 4: ...4 Note...
Page 6: ...6 Note...
Page 7: ...7 Connection Diagram...
Page 8: ...8 Block Diagram...
Page 23: ...23 MAIN Unit Circuit Diagram...
Page 24: ...24 MAIN Unit Note...
Page 49: ...49 PLL Unit Circuit Diagram...
Page 55: ...55 PA Unit Circuit Diagram...
Page 56: ...56 PA Unit Note...
Page 67: ...67 PANEL Unit Circuit Diagram...
Page 81: ...81...
