Operation instruction, L. operating modes, 2. fm mode – Kenwood TS-780 Benutzerhandbuch

Seite 12

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5-l. OPERATING MODES

The TS-780 can be operated in the following modes by

using the MODE switch.

CW - Transmission and reception of Morse Signals (Al ).

FM - Transmission and reception of FM Signals (F3).

USB - Upper side band transmission and reception (A3j).

USB is normally used on 144 and 430 MHz bands.

LSB - Lower side band transmission and reception (A3j).

switch. When either switch is pressed for 0.5 second or

longer, the frequency is shifted about 0.5 second inter-

vals.

2. Turn the AF GAIN control clockwise and noise or Signal

will be heard from the speaker. Adjust the control for

suitable level.

(To eliminate the noise which is heard when Signal is ab-

sent, turn the SQL control.)

3. Turn the VFO dial slowly until the Signal is heard most

5-2. FM MODE

Reception

Set the knobs and switches as shown in Fig. 9, then

proceed as follows: When the shift switch is at SIMP (in

simplex Operation), the mode switches FM-A and FM-B

operate in the same way so either of which may be used.

(Refer to 5-l 4).

1. T u r n t h e P O W E R s w i t c h O N . T h e meter a n d diqital

clearly while observing the “S” meter deflection.

4. Set the meter switch to ALC/CEN and turn the VFO dial

until the meter is centered while receiving the Signal of

the other Station. When the meter pointer indicates the

Center Position, it means that the transmit frequency

has tuned to the receive frequency. Set the meter

switch to RF/S. Since the IF band is wide in FM mode, a

slight deviation of frequency does not affect the recep-

display are illuminated to indicate the power is on. The

digital display indicates 144.000 MHz and VFO A.

Select your operating frequency band by pressing the

DOWN (or UP) BAND switch. The frequency is shifted

tion. In transmitting Operation, however, the other Party

may be using a fixed channel, so it is advisable to set the

meter in the Center Position (Zero-in) by adjusting the

VFO dial knob.

*

b a n d b v b a n d a t each o r e s s o f t h e D O W N (or UP)

Zero-in means that your transmit frequency coincides

.~

precisely with the receive frequency.

“0” (center position)

A

“0” (Center position)

Turn fully counterclockwise

,fCfully c o u n t e r c l o c k w i s e

Turn fully counterclockwise

fullycounterclockwise

Turn fully clockwise

F M

OFF

T o 4 3 0 MHz ANTENNA

T o 1 4 4 M H z A N T E N N A

Pre-setting

for Reception

Use of RIT Switch

The RIT (Receiver incremental Tuning) switch is used to

shift the receive frequency by about

1.5 kHz without

affecting the transmit frequency (the indication of digital

display remains unchanged).

When the receive frequency is offset, turn on the RIT

switch (the RIT indicator will light) and turn the RIT control

so that the transceiver is tuned in the frequency.

Note that the receive frequency is offset from the

transmit frequency when the RIT switch is turned on, so

the switch must be set to OFF after QSO.

Use of RF GAIN Control

This is used to adjust the receiver

RF Stage gain. Normal-

ly, leave it fully clockwise. for a very strong incoming

Signal, turn it counterclockwise. If there is a strong Signal in

the vicinity of your operating frequency, lower the RF gain

to reduce intermodulation interference.

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