Kenwood TS-480HX, TS-480SAT AM Transmission, Narrow Bandwidth for FM, Narrow Bandwidth for AM

6 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 ÒOPERATING BASICSÓ, beginning on page 18, for details on how to receive.

1Select an operating frequency.

2Press [MODE] until ÒAMÓ appears.

¥If ÒAMÓ does not appear, select ÒFMÓ first, then press [MODE] (1 s). The mode indicator changes to ÒAMÓ.

3Press [MIC/ 5/ RF.G] to enter the Microphone gain adjutment mode.

¥The current gain level appears on the sub- display.

4Press and hold Mic [PTT].

¥The LED lights red.

¥Refer to VOX function for information on automatic TX/ RX switching {page 36}.

5Speak into the microphone and adjust the MULTI control so that the 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 ÒSPEECH PROCESSORÓ {page 37} for details.

6Release Mic [PTT] to return to Reception mode.

¥The LED lights green or turns off, depending on the SQL control position.

7Press [MIC/ 5/ RF.G] to exit the Microphone gain adjustment mode.

Refer to ÒCOMMUNICATING AIDSÓ, beginning on page 34, for information on additional useful operation functions.

Note: When the TX power meter reading exceeds the value that you specified in TX Power setting {page 65}, decrease the microphone gain or adjust your tone and level of voice.

NARROW BANDWIDTH FOR FM

Select wide band or narrow band TX deviation depending on whether the other station is using wide band or narrow band filter for FM mode. While ÒNARÓ appears, the TS-480 transceiver transmits signals in narrow band FM but the reception IF filter bandwidth remains unchanged (Wide). The deviation selection is crucial to avoid audio distortion or insufficient intelligibility that the other station will encounter.

1Press [MODE] until ÒFMÓ appears.

¥If ÒFMÓ does not appear, select ÒAMÓ first, then press [MODE] (1 s). The mode indicator changes to ÒFMÓ.

2Press [FIL/ NAR] (1 s) to toggle the selection between wide and narrow TX deviation.

¥ÒNARÓ appears when the narrow TX deviation is selected.

NARROW BANDWIDTH FOR AM

When receiving AM, you can further decrease the bandwidth to eliminate interference. However, the transmission deviation of AM is not affected by this selection.

1Press [MODE] until ÒAMÓ appears.

¥If ÒAMÓ does not appear, select ÒFMÓ first, then press [MODE] (1 s). The mode indicator changes to ÒAMÓ.

2Press [FIL/ NAR] (1 s) to toggle the selection between Normal and Narrow.

¥ÒNARÓ appears when the narrow bandwidth is selected for the AM reception.

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