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To change link positions, remove the access cover by the
two black snap fasteners. Loosen the screws holding the
shorting bars, a few turns only. (Do not loosen excessively
as they could drop into the Amplifier.) Draw each shorting
bar upward
for removal.
Replace the shorting bars for the
operating voltage desired as illustrated in Fig. 2-4. Tighten
firmly.
Also, be sure to tighten the screws from which the
shorting bars were removed.
NOTE:
Fuses need not be changed in current rating when
the input voltage is changed.
CAUTION:
Excess force may break the terminal strip.
2.6
POWER CABLE
The power cable supplied with your TL-922A has no plug
at its end.
Connect a plug mating with the wall outlet.
The blue and brown leads are power, the green lead ground
as illustrated in Figure 2-5.
2.7
EXCITER
An HF Amateur band SSB or CW transmitter or transceiver
having an RF output impedance of 502 and output power of
80W to 120W is sufficient to drive the TL-922A.
Exciter
output exceeding
120W will cause overdrive, resulting in
shortened power tube life and distorted output.
To limit the
power level above 120W, use an exciter having an external
ALC input terminal.
CAUTION:
BE SURE TO TIGHTEN ALL
LOOSENED SCREWS.
Use # Philips screwdriver.
Spare shorting bars
are secured at terminals 3 and 4.
a: 240V setting
b: 120V setting
Figure 2-4 — Input Voltage Terminal Boards
Trio-Kenwood's
transceivers
Series
TS-930,
TS-830,
TS-820,
TS-530,
TS-520,
TS-430,
TS-180,
TS-130,
TS-120 and TS-900 and transmitters Series TX/T-599
are all suitable exciters and will match the TL-922A in de-
sign as well as appearance.
2.8
ANTENNA
Your TL-922A
requires an antenna
having a 50 to 752
impedance
and providing it is:
(1)
Rated for 2 kW P.E-P input power
(2)
and, exhibits a low standing-wave ratio (SWR)
Desired SWR
is 1.5 to 1. or less. A higher SWR, 2 or
3 to 1, may
cause difficult matching with your TL-
922A.
Excessive SWR
could melt the coaxial cable
and
antenna.
To protect
your
TL-922A
against
adverse SWR effects, use an antenna tuner. Note that
feeder radiation due to mismatching will cause TVI,
BCI, or similar RFI.
BLUE
TO GROUND
GREEN
Figure 2-5 —
Power Cable Color Code
Figure 2-6
Exciter Connections for RL and ALC Controls.
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