Initial Preparation; Operation - Icom IC-201 Instruction Manual

ЗЕСПОМ У - ОРЕКАПОМ
5.1
5.2
5.3
INITIAL PREPARATION
(a)
(b)
(c)
Make sure the power switch is in the 'OFF' position and the T-R switch is in | the 'R?
position.
For AC operation using the exclusive IC-3PU, power. A make sure the AC
voltage of the IC-3PU is set for your AC line voltage. The IC-3PU is for 117V or
220V AC.
For DC operation, note the IC-3PU must be removed from the IC-201, then con-
nect the DC power cord to the DC power source and black lead to the negative side.
In the event that these leads are improperly connected, the IC-201 will not func-
tion. However, no damage will be incurred since protection provided in the IC-201
will cause the fuse to blow.
Don't remove and replace the power supply cord, antenna and external speaker
with the power on.
If the fuses blow, a 1A for 220У AC or a 2A for 117V AC and a 5A in 13.8V DC
should be used. |
Connect the antenna to the antenna coax connector. Make sure the coax line is of
the correct impedance (50 ohms) and is neither shorted nor open.
(g) Turn the volume and squelch controls to the maximum counter clockwise position.
OPERATION
(a) Place the function switch in the 'VFO' position, and the Course Switch i in the 144,
145 or Duplex position.
(b) Place the tuning scale at any frequency you desire.
(c) Place the RIT in the О" position.
(d) Turn the SQL control clockwise to just before the CAL position, if FM is desired.
(е) Ші advisable that the Noise Blanker be in the 'OFF' position.
(f) Make sure the VOX switch is 'OFF'.
(g) Turn RF Gain to the high (H) position.
RECEPTION
(a) Turn the power switch on (before turning on, make sure the T R Switch is in the R
(b)
(c)
(d)
(e)
position.)
Slowly adjust the volume control to a suitable level.
Turn the tuning knob until the S meter reads maximum.
In case, SSB does not receive normal sound, switch to USB, or LSB. For CW adjust
the tuning knob until you hear a tone of about 1KHz. (This freguency is the same
for the TX and RX frequency.) Tune the center meter to 'O' position for FM.
Carefully adjust the squelch control clockwise until the noise just disappears. This |
is the proper squelch threshold setting and must be done when no signal is present.
Your transceiver will now remain silent until and in-coming signal is received which
opens the squelch. If the Squelch is unstable due to the reception of weak or un-
stable stations, er the squelch control further until the proper threshold is
obtained.
For FM, the center meter shows the difference between your receiver frequency
and the frequency of the receiving signals. If there is some difference, you can
compensate for it with the RIT control. |