Page 77 of MFJ 2006 Catalog by MFJ Enterprises, Inc.

Feel the need for maximum legal HF output power? AMERITRONs AL-1500 will give it to you. Using the Herculean 3CX1500A/ 8877 ceramic tube with its high power gain, the AL-1500 needs only 65 watts of drive from your exciter to deliver the goods-- transceivers and other exciters just loaf at 1500 watts out. Cool, efficient operation is provided by a forced-air system with tube chimney, using a commercial grade die-cast ball bearing blower for maximum tube life. The tube is further protected by time delay starting and automatic over-current shutoff to remove drive power if the amplifier is mis-tuned. You get full legal power output from a whisper quiet desktop linear. Measures 18 1/2D x17Wx10H inches, and covers all bands, 160-15 Meters, including WARC and MARS (80% of full output set to nearest amateur band). 10/12 Meters modifiable. You get 1500 watts output (1/2 hour continuous carrier) and 2500 watts (30 second continuous carrier and 2500 wattsplus 30 minute PEP two-tone test). You get all this power, plus, 65% efficiency, pi-network tuned input, Pi/Pi- L output, inrush current protection, multi-voltage transformer, QSK compatability, and a one-year warranty. The guts of the AL-1500 is its heavy duty power supply, with a 32 lb. Peter Dahl Hypersil (R) trans-former using a high silicone steel core, computer grade capacitors (33 mfd total), heavy duty bleeders and twenty 3 amp, 1000 volt power rectifiers give you a stiff 3300 volts fully loaded. The AL-1500 is built on a rugged steel chassis with a separate RF compartment fully shielded to keep RF from leaking out, keeping RFI and TVI to a minimum. Superb RF design and layout, Hi-Q tank circuit and commercially rated RF power components give you 65% plate efficiency over the entire operating range. Power goes into the antenna instead of into heat. 50-ohm broadband Pi-Network tuned input with slug-tuned coils is used. Even fussy solid state transmitters deliver full power! A carefully designed Pi/Pi-L output network using the optimum Q for each band with vernier ball drives gives smooth tuning, wide matching range, full band coverage, and peak performance at all power levels. The AL-1500s grid overload circuit protects the tube from excessive grid current; if 175 mA of peak gric current is reached, the OPR LED will no longer light and the amplifier will go into a bypass condition until reset by the operator. Transformer provides many options Since excessive line voltage stresses components (low line voltage causes a soft tube effect, for example), Ameritrons exclusive Multi-Voltage Power Transformer TM lets you optimize for different line voltages. Select from 4 different primary voltage ranges, from 205-219 VAC to 252 to 265 VAC. The amplifier comes wired from the factory for 240 VAC. The AL-1500 has two illuminated panel meters. Grid Current meter provides continuous reading of the critical grid current and indicates proper, safe amplifier operation. The other meter can be selected to read Plate Voltage, Plate Current, Peak RF Watts, or ALC. A SSB/CW selector switch chooses bias voltage for best linearity on SSB or lowest dissipation on CW. The Operate/Standby switch, in Standby, maintains the tubes filament and plate voltages while allowing barefoot operation. Includes 12 volt DC auxiliary jack and an XMT LED to provide indication of proper amplifier keying by the exciter. Power required: 240 VAC, 15 amps. Frequency coverage: 1.8,3.5,7,14, 21 MHz Warc bands. Usermodifiable for 28 MHz (FCC license required). Size:18 1/2Dx17Wx10H . 77 pounds. UPS shippable, 3 boxes. Ameritrons AL-1500 Amplifier with Eimac (R) 3CX1500A7 AMERITRON . . . The Worlds High Power Leader 77 Ameritrons 3CX1200A7 Amplifier Ameritrons Dual 3-500Z Amplifier Ham Radios toughest tube the Eimac (R) 3CX1200A7 is in ham radios toughest amplifier! It has a 50-Watt control grid dissipation. It also has the same super heavy duty power supply thats in our AL-1500 amplifier that loafs at full power. A 3CX1200A7 has the lowest quantity history of field replacement of any modern transmitting tube that we use. It has the ruggedness and power handling of ceramic tubes combined with the long-life of thoriated tungsten filaments. This classic linear gives you full legal output using a pair of 3-500Z graphite tubes. Examine the features and component ratings of the AL-82 and compare it to any competing amplifier using two 3-500Zs. Most competing amplifiers using 3- 500Zs cant give you 1500 Watts because their lightweight power supplies cant use these tubes to their full potential. Our AL-82 amplifier uses the same Peter Dahl Hypersil (R) power transformer and used in the AL-1500 and AL-1200 amplifiers -powerful stuff, just loafs at full power! AL-1200 $2645 Suggested Retail AL-82 $2645 Suggested Retail AL-1500 $3045 Suggested Retail AMERITRON super legal limit amplifiers These three rugged linears all use a super heavy duty Hypersil (R) power supply capable of 2500 Watts! An inside look at the AMERITRON AL-1500 Peter Dahl Hypersil (R) Transformer weighs 32 lbs.

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