user manual

29
7 BASIC COMMUNICATIONS
AM TRANSMISSION
Each mode used on the HF Amateur bands has its
own advantages. Although long distance DX
contacts may be less common while using AM, the
superior audio quality characteristic of AM operation
is one reason why some hams prefer this mode.
When looking for others operating on AM, check the
following frequencies first:
3885 kHz, 7290 kHz, 14286 kHz, 21390 kHz, and
29000 ~ 29200 kHz
If necessary, refer to “OPERATING BASICS”,
beginning on page 18, for details on how to receive.
1 Select an operating frequency.
2 Press [FM/ AM/ NAR] to select AM mode.
• “AM” appears.
3 Press [MIC/ CAR] to activate the Microphone
Gain Adjust.
• The current gain level appears.
4 Press [SEND], or press and hold Mic [PTT].
• The MAIN band LED lights red.
• Refer to “VOX” {page 39} for information on
automatic TX/RX switching.
5 Speak into the microphone and adjust the
MULTI/ CH control so that the calibrated power
meter slightly reflects your voice level.
• Speak in your normal tone and level of voice.
Speaking too close to the microphone or too
loudly may increase distortion and reduce
intelligibility at the receiving end.
• You may want to use the Speech Processor.
Refer to “SPEECH PROCESSOR” {page 40}
for details.
6 Press [SEND] or release Mic [PTT] to return to
receive mode.
• The MAIN band LED lights green or turns off,
depending on the MAIN SQL setting.
7 Press [MIC/ CAR] to quit the Microphone Gain
Adjust.
Refer to “COMMUNICATING AIDS”, beginning on
page 37, for information on additional useful
operation functions.
Note: If necessary, adjust the carrier level before speaking into the
microphone. Press [FUNC], [MIC/ CAR] to enter the adjustment
mode. While transmitting only carrier signals, turn the MULTI/ CH
control so that the ALC meter just begins to indicate. Press [FUNC],
[MIC/ CAR] again to complete the adjustment.
NARROW BANDWIDTH FOR FM
When operating in FM mode, you can select wide or
narrow bandwidth operation. The table below shows
the RX IF filter bandwidth and TX deviation
combination for each operating mode. The
bandwidth selection is crucial to avoid audio distortion
or insufficient intelligibility that the other station will
encounter.
edoM retliFFIXR noitaiveDXT
MFediWediW
NMFworraN
1
worraN
1
K-type: Main transceiver only.
All E-types: Main transceiver and sub-receiver.
1 Press [FM/ AM/ NAR] to select FM mode.
2 Press [FUNC], [FM/ AM/ NAR] to toggle the
selection between Wide and Narrow.
• “FM” or “FMN” appears to indicate which
bandwidth is selected.
NARROW BANDWIDTH FOR AM
When receiving AM on the main transceiver, you can
further decrease the bandwidth to eliminate
interference. However, the TX deviation of AM is not
affected by this selection.
1 Press [FM/ AM/ NAR] to select AM mode on the
main transceiver.
2 Press [FUNC], [FM/ AM/ NAR] to toggle the
selection between Normal and Narrow.
• “AM” or “AMN” appears to indicate which IF
bandwidth is selected for the main transceiver.