Tait TM9100 Service Manual

TM9100 Service Manual Description 49
© Tait Electronics Limited August 2005
Figure 2.13 Transceiver operation in digital mode
IF: UHF: 45.1 MHz VHF: 21.4 MHz
Digital
Down-
converter
Front
End
1st
IF
Channel
LPF
Second LO UHF: 90.328 MHz VHF: 42.928 MHz
Quad
Demod
RX
AGC
2nd IF: 64 kHz
Audio PA
Phase
locked to
TCXO
LPF
Control
Head
Power
PLL
Frequency
Control
Triple-Point
Equalization
Dir.
Coup.
Fin
Drv
/Ex
Pwr
Ctrl
Ramp
Control
TCXO:
13.000 MHz
VCO*
Control
Head
VCXO
Bias
Hardware
Hardware
Auxiliary
Mic
FGA
Loop
Filter
Primary
Volume
Control
Secondary
Volume
Control
Mic
PGA
Channel
LPF
Loop
Filter
Antenna
RSSI
FM
Demod
Voice
FEC
DSP
Voice
Packets
Rx
Signaling
FEC
Rx
Burst
Builder
Vocoder
Signaling
Packets
C4FM
Demod
Voice
Packets
Tx
Burst
Builder
C4FM
Modulator
Tx
Signaling
FEC
Signaling
Packets
Rx
Interface
Tx
Interface
Voice
FEC
Vocoder ALC
Arbitrator
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 separateVCOs for RX andTX
Custom
Logic
RISC Processor
Side
Tones

Tait TM9100 Specifications

General

Brand	Tait
Model	TM9100
Category	Radio
Language	English