Vco Vcv Adjustment; Dc Voltmeter - Yaesu FTM-400DR/DE Technical Supplement

VCO VCV Adjustment

Connect the DC voltmeter to TP1503 (MAIN) and
TP1502 (SUB). Referring to the table below, turn
the transceiver to each frequency listed. Confirm
that the correct voltage is present, or adjust the list-
ed setting for the required voltage.
MAIN
Tune to: TX/RX
440.05 MHz
440.05 MHz
146.05 MHz
146.05 MHz
130.00 MHz
174.00 MHz
299.99 MHz
549.95 MHz
550.00 MHz
SUB
Tune to: TX/RX
440.05 MHz
146.05 MHz
130.00 MHz
174.00 MHz
299.99 MHz
549.95 MHz
550.00 MHz
TP1503
for
RX 2.6 ± 0.25 V
TX 2.1 ± 0.25 V
RX 1.4 - 0.25 V/+0.30 V
TX 2.2 ± 0.25 V
RX 0.35 ~ 0.70 V
RX 0.40 ~ 0.70 V
RX 5.0 ~ 6.1 V
RX 3.5 ~ 5.3 V
RX 0.15 ~ 0.35 V
for
RX 2.6 ± 0.30 V
RX 1.2 - 0.25 V/+0.30 V
RX 0.55 V
RX 0.5 ~ 0.90 V
RX 5.0 ~ 6.2 V
RX 3.5 ~ 5.2 V
RX 0.15 ~ 0.35 V
ALIGNMENT-3

DC Voltmeter

1. Set the power supply voltage to 13.8 V.
2. Press the [ P1 ] key of the Microphone to set the
alignment menu Item to "Adj 10 BAT".
3. Press the [ P3 ] key of the Microphone, to save
the new setting.
FTM-400DR/DE Technical Supplement
Alignment
TP1502