Channel
Frequency Range
Operating mode
Frequency Control
Frequency Tolerance
Operating Temperature Range
Microphone
Input Voltage
Size
Weight
Antenna Connector
Power Output
Modulation
Frequency Response
Output Impedance
Harmonic Suppression
Current Drain
Receiving System
IF Frequencies
Sensitivity
Audio Output Power
Audio Distortion
Image Rejection
Adjacent Channel Rejection
Conducted Spurious
Frequency Response
Built-in Speaker
Squelch
* Specification is subject to change without prior notice.
T
R
A
N
S
M
I
T
T
E
R
R
E
C
E
I
V
E
R
G
E
N
E
R
A
L
40 (See the frequency band chart)
26.96 MHz ~ 27.99125 MHz
F3E (FM), A3E (AM)
PLL Synthersizer
0.002%
-10 to + 55 C
Plug-in Type
13.2V DC ± 15%
140 (W) x 186 (L) x 37 (H)
990 g
Antenna Connector
Duty cycle 10% 4 Watts @13.8V DC
AM:from 85% to 95%
FM:1.8KHz ± 0.2KHz
300Hz to 3000Hz
50ohms, Unbalanced
More than -36dBm
AM Full Mod. 1.6A Max.
Dual conversion superheterodyne
Double Conversion 1st 10.695MHz/2nd 455KHz
0.7 V for 10dB(S+N)/N in AM Mode
0.5 V for 20dB SINAD in FM Mode
2.0W @ 8 Ohm
Less then 8% @ 1KHz
60 dB
60 dB
More than 60 dB
300 to 2500Hz
8 Ohms, round
Adjustable; Threshold less than 1 microvolt
SECTION1 SPECIFICATIONS
Summary of Contents for Freequency TCB-770
Page 31: ...5 1 Main PCB Top side SECTION5 BOARD LAYOUT ...
Page 32: ...Main PCB Bottom side ...
Page 33: ...5 2 Front PCB Top side ...
Page 34: ...Front PCB Bottom side ...
Page 35: ...5 3 LED PCB Top side ...
Page 36: ...LED PCB Bottom side ...
Page 37: ...5 4 Volume PCB ...
Page 38: ...5 5 MIC PCB ...
Page 39: ...SECTION6 BLOCK DIAGRAM ...
Page 40: ...SECTION7 SCHEMATIC ...