5-l. OPERATING MODES

5-l. OPERATING MODES

 

switch. When either switch is pressed for 0.5 second or

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

longer, the frequency is shifted about 0.5 second inter-

vals.

 

 

 

 

 

 

 

 

 

 

 

using the MODE switch.

 

 

 

 

 

 

 

 

 

 

 

 

 

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

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

will be heard from the speaker. Adjust the control for

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

 

 

suitable level.

 

 

 

 

 

 

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

 

 

 

 

 

 

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

 

USB is normally used on 144 and 430 MHz bands.

 

sent, turn the SQL control.)

 

 

 

 

 

 

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

 

 

 

 

 

 

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

 

 

 

 

 

 

5-2. FM MODE

 

clearly while observing the “S” meter

deflection.

Reception

 

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

 

until the meter is centered while receiving the Signal of

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

the other Station. When the meter pointer indicates the

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

Center Position, it means that the transmit frequency

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

has tuned to the receive frequency. Set the meter

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

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

(Refer to 5-l 4).

 

 

slight deviation of frequency does not affect the recep-

1. Turn the POWER switch ON . The meter and diqital

tion. In transmitting Operation, however, the other Party

display are illuminated to indicate the power is on. The

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

digital display indicates 144.000 MHz and VFO A.

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

Select your operating frequency band by pressing the

VFO dial

knob.

 

 

 

 

 

 

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

 

 

 

 

 

 

* Zero-in

means that your transmit frequency coincides

band bv band at each oress of the DOWN (or

UP)

.~

 

precisely with the receive frequency.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-l

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T

 

 

 

 

 

 

 

“0”

(center

position)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

“0”

(Center

position)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turn fully counterclockwise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

,fCfully

counterclockwise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turn fully

counterclockwise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

iw\Turnfullycounterclockwise

&ZA \

F M

To 430 MHz ANTENNA

To 144 MHz~ANTENNA

Turn fully clockwise

OFF

Pre-setting for Reception i

Use of RIT Switch

The RIT (Receiver incremental Tuning) switch is used to shift the receive frequency by about f 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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Kenwood TS-780 manual 5-l.OPERATING MODES, Fm Mode, Za