Kenwood TS-2000 Operation Manual - Page 39

Am Transmission, Narrow Bandwidth For Fm, Fm/ Am/ Nar], Mic/ Car], Send], Multi/ Ch, Func]

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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. 7 BASIC COMMUNICATIONS 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. Mode RX IF Filter TX Deviation FM FMN Wide Narrow1 Wide Narrow 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. 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 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. 29

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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.
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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.