Kenwood TS-780 Specifications, General, Transmitter, Receiver Section, Receiver Sensitivity

Models: TS-780

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TS-780

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TS-780

SPECIFICATIONS

 

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GENERAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Frequency

Range

.144.0~ 1 4 6 . 0

MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

4 3 0 . 0 ~4 4 0 . 0 M H z

 

 

 

 

 

 

 

Mode

........................................................

 

 

 

SSB (USB, LSB), CW, FM

 

 

 

 

 

Antenna

 

impedance

..................................

..5 0 9 (144 MHz, 430 MHz)

 

 

 

 

Voltage

Requirements

..22 0 V AC, 50/60.

Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

1 3 . 8 V DC&l5%

 

 

 

 

 

 

 

 

Power

Consumption

Receive (no Signal): 45 Watts

(220

V AC), 1.2 A (13.8 V DC)

 

 

 

 

 

 

 

Transmit:

130

Watts

(220

V AC), 5

A (1 3.8

V DC)

 

Backup

current (Battery)

..Les s than

10

yA

 

 

 

 

 

 

 

 

 

Semiconductor

Complement

..Transistors:

 

 

1 4 9

 

 

 

 

 

 

 

 

 

 

 

 

 

FETs:

 

 

 

 

3 5

 

 

 

 

 

 

 

 

 

 

 

 

 

ICs:

 

 

 

 

 

41

 

 

 

 

 

 

 

 

 

 

 

 

 

Diodes:

 

 

 

1 9 5

 

 

 

 

 

 

 

Dimensions

.290

 

(W)

x 124

(H)

x 322

(D)

mm

 

 

 

 

 

 

 

 

 

(1 1 “-7/16)x

(4”.7/8)x

(12”-5/8)

 

 

 

Weight

 

 

. lO . l

 

kg

(22.2 Ibs)

 

 

 

 

 

 

 

 

TRANSMITTER

SECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RF Power

Output

SSB,

CW,

FM:

1 0

Watts

 

 

 

 

 

 

 

 

 

 

 

FM

(LOW):

 

 

Approx.

1

watt

 

 

 

Modulation

 

.SSB:

 

 

 

 

Balanced

modulation

 

 

 

 

 

 

 

 

FM:

 

 

 

 

 

Variable

reactance

frequency

shift

 

Maximum

frequency

deviation (FM)

f 5

kHz

 

 

 

 

 

 

 

 

 

 

 

 

Carrier

Suppression

.....................................

Better

than 4 0

dB

 

 

 

 

 

 

 

 

Unwanted

Sideband

Suppression

.Better than 40 dB

 

 

 

 

 

 

 

 

Spurious

Radiation

..Bette r than

- 60 dB

 

 

 

 

 

 

 

Microphone Impedance

,500

 

~600

Q

 

 

 

 

 

 

 

 

 

 

AF Response

of Transmitter (SSB)

.400~

2600

Hz

(- 9

dB)

 

 

 

 

 

Repeater

Frequency

Shift

- 600 kHz or +

600

kHz

(144.0~

146.0 MHz)

 

 

 

 

 

 

 

- 7 . 6 MHz or - 1 . 6 M H z ( 4 3 0 . 0 - 4 4 0 . 0 MHz)

 

RPT

Tone

Frequency

1 7 50 Hz

 

 

 

 

 

 

 

 

 

 

 

 

RECEIVER SECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Receiver Sensitivity

....................................

.SSB,

CW:

 

 

 

0.2

yV

for 10

dB (S + N)/N

 

 

 

 

 

 

 

 

FM:

 

 

 

 

 

1 yV for 30 dB (S +

N)/N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.2 yV for 12 dB SINAD

 

 

Intermediate

Frequency

.l st:

 

3 0 . 8 6 5 MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2nd: 10 . 695 MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3rd: 455 kHz (FM only)

 

 

 

 

 

Squelch

Sensitivity

.O. 1

6

yV (At threshold)

 

 

 

 

 

 

 

Audio

Output

 

.2.0

Watts

(with

less than 10% distortion) into an 8 ohm load

 

Receiver Selectivity

.SSB,

CW:

 

 

 

2 . 2 kHz ( - 6 dB)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 . 8 kHz (-60 dB)

 

 

 

 

 

 

 

 

 

FM:

 

 

 

 

 

14 kHz ( - 6 dB)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30 kHz (- 60 dB)

 

 

 

Circuit and ratings are subject to Change without notice for improvement.

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Kenwood TS-780 manual Specifications, General, Transmitter, Receiver Section, Receiver Sensitivity