Saab 340B, Руководство по эксплуатации

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COMMUNICATIONS, HF COM
Operation
Aircraft Operations Manual
4/2.2
O
PAGE 5
Apr 01/15
COLLINS HF 230
CONDITIONS NORMAL PROCEDURES
2.3 FREQUENCY/
CHANNEL TUN-
ING
Do not tune or transmit on HF system during fueling since fire and/or injury to
personnel may result.
WARNING
1. XMIT SELECT HF pushbutton PRESS . . . . . . . . . . . . . . . . . . . .
− Check to be illuminated.
2. CLAR, clarifier control OFF . . . . . . . . . . . . . . . . . . . . . . . . . . .
Frequency selection
3. CHAN/FREQ selector FREQ . . . . . . . . . . . . . . . . . . . . . . .
4. Frequency SET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
− The HF will mute when selecting a new frequency. Wait until the HF is
no longer muted before continuing the tuning procedure.
5. PULL MODE knob SELECT. . . . . . . . . . . . . . . . . . . . . . . . . . .
− Select mode of operation.
− Successful HF communications depend on compatibility between the
airborne and the ground station. It is extremely important that the oper-
ator select the same operating mode on the HF that the ground station
the operator wish to contact will be using. The USB mode is the most
popular operating mode for airborne HF ssb communications and
should normally be tried first unless it is known that the ground station is
operating in another mode.
Proceed with item 6 below.
Channel selection
3. CHAN/FREQ selector CHAN . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. Channel number SET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
− Use any of the two selectors.
− The HF will mute when selecting a new channel. Wait until the HF is no lon-
ger muted before continuing the tuning procedure.
(Cont’d)