5
3.3
TL-922 Revival
(
tm
)
Hardware Upgrade Kit Features
Kessler Engineering’s TL-922 Revival
(
tm
)
hardware upgrade kit provides:
1. Step-Start In-Rush Current Protection
2. Low-Voltage PTT Switching for use with modern solid-state transceivers
3. Quiet T/R Switching
4. QSK Operation
5. Electronic Bias Control
6. LED “On-Air“, “Standby”, and Meter Illumination
The upgrade kit utilizes four high-quality, removable circuit boards, with complete documen-
tation to facilitate installation, service and maintenance of the modified TL-922 amplifier.
The kit comes with all circuit boards assembled and tested. Should a fault develop on any
of these circuit boards, it may be removed and serviced. If necessary, they may also be
returned to Kessler Engineering for repair.
The complete modification kit comes with the items listed in Table 3.1 and shown in
Figure 3.1.
Table 3.1: TL-922 Revival
(
tm
)
Modification Kit Contents
Quantity
Description
1
LED Circuit Board
1
Step-Start Circuit Board
1
QSK T/R Relay Circuit Board
1
Electronic Bias Circuit Board
1
Wiring Harness
8
Heat Shrink Tubing
12
Plastic Wire Ties
2
8mm Hex Nuts
2
Flat Steel Washers
2
Flat Nylon Washers
1
Rubber Grommet
1
LED Diffuser Paper
www.KesslerEngineeringLLC.com
Содержание TL-922 Revival (tm)
Страница 7: ...vii List of Tables 3 1 TL 922 Revival tm Modification Kit Contents 5 www KesslerEngineeringLLC com...
Страница 13: ...6 Figure 3 1 TL 922 Revival tm Upgrade Kit Contents www KesslerEngineeringLLC com...
Страница 18: ...11 Figure 3 4 LED Circuit Board Correctly Installed www KesslerEngineeringLLC com...
Страница 30: ...23 Figure 3 19 QSK PCB to QRO Output Connections www KesslerEngineeringLLC com...
Страница 34: ...27 Figure 3 23 Electronic Bias PCB Installed www KesslerEngineeringLLC com...
Страница 46: ...39 3 8 7 Electrical Schematics Figure 3 29 Step Start Schematic Diagram www KesslerEngineeringLLC com...
Страница 47: ...40 Figure 3 30 Step Start PCB www KesslerEngineeringLLC com...
Страница 48: ...41 Figure 3 31 QSK T R Relay Schematic Diagram Figure 3 32 QSK T R Relay PCB www KesslerEngineeringLLC com...
Страница 49: ...42 Figure 3 33 LED Schematic Diagram Figure 3 34 LED PCB www KesslerEngineeringLLC com...
Страница 50: ...43 Figure 3 35 Electronic Bias Schematic Diagram www KesslerEngineeringLLC com...
Страница 51: ...44 Figure 3 36 Electronic Bias PCB www KesslerEngineeringLLC com...
Страница 54: ...47 User Notes www KesslerEngineeringLLC com...
Страница 55: ...48 5 1 User Notes Continued www KesslerEngineeringLLC com...
Страница 56: ...49 5 2 User Notes Continued www KesslerEngineeringLLC com...
Страница 57: ...50 5 3 User Notes Continued www KesslerEngineeringLLC com...
