Squelch threshold level, S-meter level (s-1), S-meter level (s-9) – Vertex Standard FT-1807M User Manual

Page 11: Tx power (high), Tx power (low 3), Tx power (low 2), Tx power (low 1), Tx deviation, Alignment

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11

Squelch Threshold Level
ˆ Inject a 435.100 MHz signal at a level of –14 dBµ

(with 1 kHz modulation @±3.5 kHz deviation)
from the RF signal generator.

ˆ Rotate the SQL knob to the 10-o’clock position.
ˆ Rotate the DIAL knob to set the alignment param-

eter to “435.100 tL

435.100 tL

435.100 tL

435.100 tL

435.100 tL.”

ˆ Press the [D/MR(MW)] key to enable adjustment

of the “Squelch Threshold Level.”

ˆ Press the [D/MR(MW)] key three times.
ˆ Press the [D/MR(MW)] key.

S-meter Level (S-1)
ˆ Inject a 435.100 MHz signal at a level of –5 dBµ

(with 1 kHz modulation @±3.5 kHz deviation)
from the RF signal generator.

ˆ Rotate the DIAL knob to set the alignment param-

eter to “435.100 S1

435.100 S1

435.100 S1

435.100 S1

435.100 S1.”

ˆ Press the [D/MR(MW)] key to enable adjustment

of the “S-meter Level (S-1).”

ˆ Press the [D/MR(MW)] key three times.
ˆ Press the [D/MR(MW)] key.

S-meter Level (S-9)
ˆ Inject a 435.100 MHz signal at a level of +23 dBµ

(with 1 kHz modulation @±3.5 kHz deviation)
from the RF signal generator.

ˆ Rotate the DIAL knob to set the alignment param-

eter to “435.100 S9

435.100 S9

435.100 S9

435.100 S9

435.100 S9.”

ˆ Press the [D/MR(MW)] key to enable adjustment

of the “S-meter Level (S-9).”

ˆ Press the [D/MR(MW)] key three times.
ˆ Press the [D/MR(MW)] key.

TX Power (High)
ˆ Rotate the DIAL knob to set the alignment param-

eter to “435.000 HP

435.000 HP

435.000 HP

435.000 HP

435.000 HP.”

ˆ Press the [D/MR(MW)] key to enable adjustment

of the “TX Power (High).”

ˆ Press the PTT switch to activate the transmitter,

adjust the DIAL knob so that the RF Power Meter
reading is 50 W (±1.0W).

ˆ Press the [D/MR(MW)] key.

TX Power (Low 3)
ˆ Rotate the DIAL knob to set the alignment param-

eter to “435.000 L3

435.000 L3

435.000 L3

435.000 L3

435.000 L3.”

ˆ Press the [D/MR(MW)] key to enable adjustment

of the “TX Power (Low 3).”

ˆ Press the PTT switch to activate the transmitter,

adjust the DIAL knob so that the RF Power Meter
reading is 25 W (±1.0 W).

ˆ Press the [D/MR(MW)] key.

TX Power (Low 2)
ˆ Rotate the DIAL knob to set the alignment param-

eter to “435.000 L2

435.000 L2

435.000 L2

435.000 L2

435.000 L2.”

ˆ Press the [D/MR(MW)] key to enable adjustment

of the “TX Power (Low 2).”

ˆ Press the PTT switch to activate the transmitter,

adjust the DIAL knob so that the RF Power Meter
reading is 10 W (±0.5 W).

ˆ Press the [D/MR(MW)] key.

TX Power (Low 1)
ˆ Rotate the DIAL knob to set the alignment param-

eter to “435.000 L1

435.000 L1

435.000 L1

435.000 L1

435.000 L1.”

ˆ Press the [D/MR(MW)] key to enable adjustment

of the “TX Power (Low 1).”

ˆ Press the PTT switch to activate the transmitter,

adjust the DIAL knob so that the RF Power Meter
reading is 5 W (±0.5 W).

ˆ Press the [D/MR(MW)] key.

TX Deviation
ˆ Inject a 1 kHz, 50 mV signal from the Audio Gen-

erator.

ˆ Rotate the DIAL knob to set the alignment param-

eter to “435.000 dU

435.000 dU

435.000 dU

435.000 dU

435.000 dU.”

ˆ Press the [D/MR(MW)] key to enable adjustment

of the “TX Deviation.”

ˆ Press the PTT switch to activate the transmitter,

adjust the DIAL knob so that the Deviation Meter
reading is 4.2 kHz (±0.1 kHz).

ˆ Press the [D/MR(MW)] key.

Alignment

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