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22
5 BASIC COMMUNICATIONS
FM TRANSMISSION
FM is a common mode for communicating on VHF or
UHF frequencies. As for HF and the 6 m band,
29 MHz and 51-54 MHz bands are commonly used
for FM operation. You can also utilize 10 m/ 6 m band
repeaters to reach your friends when they are outside
or skipped over from your coverage. Although FM
requires a wider bandwidth when compared to SSB
or AM mode, it has the fi nest audio quality among
these modes. When combined with the full-quieting
aspect of FM signals, which suppresses background
noise on the frequency, FM can be the best method
for maintaining casual communications with your local
friends.
If necessary, refer to “OPERATING BASICS”,
beginning on page 10, for details on how to receive.
1 Select an operating frequency.
2 Press [FM/AM (FM-N)] until “FM” appears.
• If “FM” does not appear, select “AM”, then press
[FM/AM (FM-N)]. The mode indicator changes
to “FM”.
3 Press and hold Mic [PTT].
• The TX-RX LED lights red.
• Refer to “VOX” {page 31} for information on
automatic TX/ RX switching.
4 Speak into the microphone in your normal voice.
• Speaking too close to the microphone or too
loudly may increase distortion and reduce
intelligibility at the receiving end.
• You can switch the Microphone gain for FM
between 1 (Normal), 2 (Medium), and 3 (High)
by using Menu No. 53. 1 (Normal) is usually
appropriate; however, select 3 (High) if other
stations report that your modulation is weak.
5 Release Mic [PTT] to return to Reception mode.
• The TX-RX LED lights green or turns off,
depending on the SQL control position.
Refer to “COMMUNICATING AIDS”, beginning on
page 29, for additional information on useful operation
functions.
Note: Microphone gain adjustment for SSB or AM has no
effect in FM mode. In FM mode, you must select 1 (Normal), 2
(Medium), or 3 (High) in Menu No. 53.
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 fi lter for FM mode. While
“NAR” appears, the TS-590SG transceiver transmits
signals in narrow band FM but the reception IF
fi lter bandwidth remains unchanged (Wide). The
deviation selection is crucial to avoid audio distortion
or insuffi cient intelligibility that the other station will
encounter.
1 Press [FM/AM (FM-N)] until “FM” appears.
•
If “FM” does not appear, select “AM” fi rst, then
press [FM/AM (FM-N)].
The mode indicator
changes to “FM”.
2 Press and hold [FM/AM (FM-N)] to toggle the
selection between wide and narrow TX deviation.
• “
” appears when narrow TX deviation is
selected.
CW TRANSMISSION
CW operators know that this mode is very reliable
when communicating under worst conditions. It may
be true that newer digital modes rival CW as being
equally as useful in poor conditions. These modes,
however, do not have the long history of service nor
the simplicity that CW provides.
This transceiver has a built-in electronic keyer that
supports a variety of functions. For details on using
these functions, refer to “ELECTRONIC KEYER”
{page 34}.
If necessary, refer to “OPERATING BASICS”,
beginning on page 10, for details on how to receive.
1 Select the operating frequency.
2 Press [CW/FSK (REV)] until “CW” appears.
• If “CW” does not appear, select “FSK” fi rst, then
press [CW/FSK (REV)]. The mode indicator
changes to “CW”.
• To precisely tune in another station, use Auto
Zero-beat. Refer to “AUTO ZERO-BEAT”
{page 23}.
3 Press [SEND].
• The TX-RX LED lights red.
4 Operate the Keys or Paddle.
• As you transmit, you should hear a sidetone
that lets you monitor your own transmission.
5 Press [SEND] to return to Reception mode.
• The TX-RX LED lights green or turns off,
depending on the SQL control setting.