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AL-1500

AL-1500
AMPLIFIER, HIGH POWER, ONE 3CX-1500/8877


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
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