Other Operations - Icom IC-R71A Instruction Manual

5-8 AM OPERATION
Set the operating mode for AM, by pushing the MODE
SELECT switch "AM". The other controls are the same as
those for SSB reception.
When tuning an AM signal, tune for maximum signal
strength as indicated on the S-meter and the clearest audio.
The FILTER SWITCHES select three conditions. The
selectivity and Pass-Band-Tuning function will be as
follows:
FILTER SWITCH | BAND WIDTH
PBT CONTROL
NORMAL 2.8KHz EFFECTIVE
* When optional CW filter, FL-32 is installed.
When you wish to receive lower frequency than 1600KHz
with a single wire anntenna, connect the antenna to the
LOW BAND ANTENNA terminal and set the antenna
switch to the "1" position. :
If you use an antenna tuner to convert the antenna
impedance to 50 ohms, connect its feeder to the ANTEN-
NA connector and set the antenna switch to the ''2"
position.
When using the supplied sing]
wire antenna instantly. |
Set the antenna switch
to the "'2" position.
Insert the banana plug
into the antenna connector
5-9 FM OPERATION (Option)
Set the operating mode for FM, by pushing the FUNCTION
KEY first, then the MODE SELECT switch "AM". The
other controls are the same as those for SSB reception,
however, the Pass-Band-Tuning control, Notch Filter, Noise
Blanker, AGC circuits and FILTER SWITCHES do not
work in this mode.
When tuning an FM signal, tune for maximum signal
strength as indicated on the meter and to be indicated
the letters '"TUNE" on the frequency display.
NOTE: Most counteries do not allow use of the FM
mode on HF bands except the 28MHz HAM band.
5-10 OTHER OPERATIONS
5-10-1 WWV RECEPTION
To receive WWV (or other standard frequency station), set
the operating band to 10MHz, and the MODE to AM or
SSB. Tune to 10.000.0MHz on the frequency display. i
Since the IC-R71 has a General Coverage capability, any of
WWV's frequencies can be received.
5-10-2 SIMPLE FREQUENCY ALIGNMENT
A very accurate frequency counter is necessary to align the
frequency of the IC-R71. However, the frequency can be
aligned simply by receiving the WWV signal. .
1. Set the frequency display to 10.000.0MHz and be sure
that you are receiving the WWV signal.
2. Set the operating mode to USB or LSB. Some beat tone
can be heard.
3. Rotate the FREQUENCY SET Control, located under
the access cover, so that the beat tone becomes zero
beat.
5-10-3 SCOPE TERMINAL
This terminal brings out the -7OMHz IF signal from the
mixer in the receiver. Observation of not only the received
signal, but also of signals of the selected band width are
possible by using a panadapter or panascope. (ICOM does
not manufacture a panadapter.)
5-10-4 TRANSMITTER CONNECTION
This receiver can be used with a transmitter or transceiver
for amateur radio service or other services.
Cable connections with a transmitter or transceiver are
shown below.
Be sure to ground the mute terminal in the transmit mode.
Cable Connections for a Transceiver or Transmitter
ANTENNA
Shielded wire
ACRTIA/E/D TRANSMITTER
*The SEND terminal should
Coaxial Cable be grounded in the transmit
mode.
ey jae