38
4. Set the “LINEAR” switch to
OPERATE
.
Confirm illumination of the
STBY
light.
5. Electrically short the “Open” end of the keying line cable.
Confirm
ON AIR
light illuminated,
STBY
light extinguished.
Observe and note anode idling current (
IP
) for proper ZSAC level.
6. Open the keying line.
Confirm that anode current returns to “0”.
7. Switch the amplifier
OFF
.
If necessary, the idling current should be adjusted to achieve approximately 180mA (“MODE”
switch to
SSB
). To do so, unplug the amplifier from the AC mains. Wait approximately 30
minutes for the HV to bleed off, then move the bias jumper in the appropriate direction to
increase/decrease idling current. Secure the bottom cover, and repeat the previous test until
proper idling current is achieved.
Congratulations!!
If you’ve gotten to this point, passing all of the tests, then
you’ve successfully upgraded your TL-922 with QSK, Step-Start, Electronic Bias, etc., and
it should provide reliable service for years to come. Congratulations on a job well-done!
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...
