Tait TM8110 Service Manual

TM8100/TM8200 Service Manual Description 51
© Tait Electronics Limited June 2006
Figure 2.16 Transceiver operation
Digital
Down-
converter
Squelch
Front
End
1st
IF
Channel
LPF
RSSI
Second LO UHF: 90.328 MHz VHF: 42.928 MHz
FM
Demod
Quad
Demod
RX
AGC
Audio
Filtering
De-
emphasis
Optional
Processing
Data and Signaling
Decoders
Side
Tones
Audio PA
Phase
locked to
TCXO
LPF
Control
Head
Power
Mag.
PLL
Frequency
Control
Triple-point
Equalization
Audio
Filtering
Pre-
emphasis
Optional
Processing
Data and Signaling
Encoders
ALC
Dir.
Coup.
Fin
Drv
/Ex
Pwr
Ctrl
Ramp
Control
TCXO:
13.000 MHz
VCO*
Control
Head
VCXO
Bias
Custom
Logic
Hardware
Hardware
DSP
Auxiliary
Mic
FGA
Loop
Filter
Primary
Volume
Control
Secondary
Volume
Control
Mic
PGA
Channel
LPF
Loop
Filter
Antenna
IF: UHF: 45.1 MHz VHF: 21.4 MHz
2nd IF: 64 kHz
Rx
Interface
RISC Processor
RISC Processor
Analog-to-digital conversion Digital-to-analog conversion System interface
Key Notes
(1) Noise blanker not shown (2) VHF configuration shown*
For UHF there are separate VCOs for RX and TX
Tx
Interface

Tait TM8110 Specifications

General

Brand	Tait
Model	TM8110
Category	Radio
Language	English