Kenwood - TK-780 - Transceiver
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Equipment:
TK-780
Date:
2001
Category:
Group:
Sub Group:
Information
GENERAL
Frequency Range ................................ K,HK : 146
to 174MHz K2,HK2 : 136 to 162MHz
Number of Channels ........................... Maximum 600
channels (LTR model), Maximum 250 channels (Conventional model)
Channel Spacing ................................. Wide :
25/30kHz, Narrow : 12.5/15kHz (PLL channel step 2.5, 5,
6.25, 7.5kHz)
Input Voltage ....................................... 13.6V
DC negative ground
Current Drain ...................................... 0.4A on
standby
1.0A on receive TK-780 8A on transmit TK-780H : 12A on transmit
Temperature Range ............................ –30°C to
+60°C (–22°F to +140°F)
Dimensions & Weight TK-780 140
(5.51) W x 40 (1.58) H x 145 (5.73) D mm (inch), 0.94kg
(2.07 lbs)
TK-780H : 140 (5.51) W x 40 (1.58) H x 173 (6.84) D mm
(inch), 1.05kg (2.31 lbs) Receiver (Measurements made per EIA standard EIA/TIA-204-D)
RF Input Impedance ........................... 50Ω
Sensitivity (EIA 12dB SINAD) ............. 0.25μV
Selectivity ........................................... Wide
: 80dB Narrow : 70dB
Intermodulation................................... Wide :
75dB Narrow : 65dB
Spurious and Image Rejection............ 90dB
Audio Power Output ........................... 4W at 4Ω less
than 5% distortion
Frequency Stability ............................. ±2.5ppm
from –30°C to +60°C
Channel Frequency Spread ................ K,HK : 28MHz
K2,HK2 : 26MHz Transmitter (Measurements made per EIA standard EIA-152-C)
RF Power Output TK-780 25W TK-780H : 45W
Spurious and Harmonics..................... 70dB
Modulation .......................................... Wide :
16K0F3E Narrow : 11K0F3E
FM Noise ............................................ Wide :
50dB Narrow : 45dB
Microphone Impedance...................... 600Ω
Audio Distortion .................................. Wide :
Less than 3% Narrow : Less than 5%
Frequency Stability ............................. ±2.5ppm
from –30°C to +60°C
Channel Frequency Spread ................ K,HK : 28MHz
K2,HK2 : 26MHz
1 Manual
Service manual supplement
Manual type:
Service manual supplement
Pages:
69
Size:
3.9 MB
Language:
english
Revision:
Manual-ID:
B51-8581-00 (N) 1370
Date:
May 2001
Quality:
Electronic document, no scan, very well readable.
Upload date:
Jan. 1, 2017
MD5:
8e473f9f-eb3b-6c5f-4cf1-5a31a1fe7dad
Downloads:
1520
Information
This service manual applied to products with 30200001 or
subsequent serial numbers.
In terms of the products with the serial numbers earier than
30200001, refer to the TK-780 H
service manual as per part No. B51-8461-10.
GENERAL
...
2
OPERATING FEATURES ... 3
REALIGNMENT...
15
INSTALLATION...
20
CIRCUIT DESCRIPTION... 28
SEMICONDUCTOR DATA... 33
DESCRIPTION OF COMPONENTS ... 35
PARTS
LIST...
37
EXPLODED VIEW
... 47
PACKING
...
48
ADJUSTMENT
... 49
PC BOARD VIEWS
PLL/VCO (X58-4540-11) : K2,HK2 ... 57
PLL/VCO (X58-4712-70) : K,HK ... 58
TX-RX UNIT (X57-6480-XX) (A/2) ... 59
TX-RX UNIT (X57-6480-XX) (B/2)... 65
SCHEMATIC DIAGRAM ... 69
BLOCK
DIAGRAM... 77
LEVEL
DIAGRAM... 80
TERMINAL FUNCTION ... 82
SPECIFICATIONS...
83