AMERITRON AL-1200 Kullanım Kılavuzu - Sayfa 3
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FEATURES
1. Inexpensive tubes: the AL-1200 uses a single rugged
3CX1200A7 tube.
2. Fast warm-up time:
few seconds of warm-up time.
3. SSB/CW switch: the bias voltage is switched to provide
the best linearity on SSB or the lowest dissipation on
CW operation.
4. ALC Indicator: the drive level is detected to provide a
control voltage for the exciter. ALC prevents over-
driving of the linear and reduces distortion from ex-
cessive drive power.
5. Vernier Plate and Load Adjustments: both tuning con-
trols have vernier 6:1 reduction drives for smooth tuning.
TECHNICAL SPECIFICATIONS AL-1200*
Input
Circuit type: Pi-network, slug tuned coils
maximum VSWR at resonance: 1.2:1 minimum
2:1 VSWR bandwidth: 20% maximum drive
power permissible: 130 watts typical drive for
full power output: 100 watts
Output
circuit type: Pi-L, Pi
hour continuous carrier: 1500 watts (Below 18MHz) 30
in
second continuous carrier: 1800 watts plus
in hour PEP two-tone test: 1800 watts
Power Supply
circuit type: full wave bridge, capacitor input no
load voltage: 3600V
full load voltage. 3300V full load current: .8 amp
regulation: 10% or better transformer: 32 lbs.,
hypersil capacitors: 26 mfd total, computer grade
maximum draw at rated output: 13 amps at 240V
AC, 50/60 Hz
Tube
type: (1) 3CX1200A7
continuous dissipation: 1200 watts
warm-up time: 10 seconds
the 3CX1200A7 requires only a
6. Two Illuminated Panel Meters: the AL-1200 has two il-
luminated panel meters. . The Grid Current meter pro-
vides a continuous reading of grid current and indicates
proper operation of the amplifier. The other meter reads
Plate Voltage (HV), Plate Current (IP), Peak RF Watts
(PO) and ALC.
7. Operate/Standby Switch: filament and plate voltages are
maintained while allowing the amplifier to be bypassed
for "barefoot" operation.
8.12 Volt Auxiliary Jack: 12 volts at 100 mA is provided
for accessories such as the ATR-15 Antenna tuner.
9. XMT Indicator LED: provides a front panel indication of
proper amplifier keying by the exciter during operation.
Caution: This amplifier must be disconnected from the
power mains before removing the cover. See the warning
on page 10.
Metering: multimeter: plate current, plate voltage,
drive/ALC, power output (PEP watts). Grid: grid
current
ALC: negative going, 0-20V, adjustable, phono jack
Efficiency CW: 65% typical
Efficiency SSB (envelope crest): 62% typical
MARS/WARC: yes, bandswitch set to nearest amateur
band
Keying: requires relay closure or sinking to ground of
positive (+) 12 VDC at 100 mA, phono jack
RF Connectors: S0239
Line Connector: NEMA 6-15P 240V style
1
Dimensions: 18
D x 17" W x 10"H
/2"
Weight: 77 lbs.
Frequency Coverage: 1.8 through 21 MHz amateur bands
Third Order IMD at Rated Output: -34 dB at 1500
output
*
specifications are subject to change without notice or obligation.
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