1.5KW Output Linear Amplifier w/ 3CX1500A on 240V for US

 

Download the AL-1500 Manual
Click here for a parts chart for the AL-1500.

 

The Ameritron AL-1500 Linear Amplifier will deliver 1500 Watts CW output with only 65 Watts drive. It gives you the Herculean 3CX1500/8877 tube for full legal output with minimum exciter wear.

The AL-1500 also features time delay starting to protect the tube and over-current shut off to remove the drive if mistuned. A commercial grade die-cast ball bearing blower provides quiet operation at full rated airflow to maximize tube life.

Specs:
Input:
Circuit type: Pi-network, slug tuned coils.
Maximum VSWR at resonance: 1.3:1.
Minimum 2:1 VSWR bandwidth: 20% of center frequency
Maximum drive power permissible: 100 Watts
Typical drive for full power output: 65 watts
Output: Circuit type: Pi-L/Pi network
1/2 hour continuous carrier: 1500 watts
30 second continuous carrier: 2500 watts
1/2 hour PEP two-tone test: 2500 watts plus
30 second PEP two-tone test: 2500 watts plus

Power Supply
Circuit type: Full wave bridge, capacitor input
No Load voltage: 3600V
Full load voltage: 3300V
Full load current: 1 amp
Regulation: 10% typical
Transformer: 34lb., Hypersil
Capacitors: 26mFd total, computer grade
Maximum draw at rated output: 15 amps at 240 VAC

Tube
Type: Eimac 3CX1500/8877
Continuous dissipation: 1500W
Warm-up time: 180 seconds

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: Approx. 67%
Efficiency SSB (envel. crest): 67%

MARS/WARC: 80% of full output, set to nearest amateur band

Keying: Requires relay closure or sinking to ground of 12 VDC at 100 mA phono jack

RF Connectors: SO-239

Line Connectors: NEMA 6-15P 240V style

Dimensions:18 1/2"D x 17"W x 10"H
Weight: 77 lb.

Frequency Coverage: 1.8, 3.5, 7, 14, 21 MHz and WARC bands. Export AL-1500X includes 28 MHz.

Third Order IMD at Rated Output: -36 dB

All metal cabinet

*WARC Bands may offer slightly less performance than primary amateur bands