Ameritron AL-1500

Description

Selling for my grandmother who is a HAM radio fanatic but no longer has the time to enjoy the hobby.  The amplifier works great. Comes with tube.
Ameritron AL-1500
Feel the need for maximum legal HF output power? Ameritron's AL-1500 will give it to you.
Using the Herculean 3CX1500A7/8877 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 i fhte amplifier is mis-tuned.
You get full legal power output from a whisper quiet desktop linear. Measures 18.5"D x 17"W x 10"H, 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 watts-plus 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. Hypersil transformer 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-1500's grid overload circuit protects the tube from excessive grid current; if 175mA of peak grid 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), Ameritron's exclusive Multi-Voltage Power Transformer lets you optimize for different line voltages. Select from 4 different
primary voltage ranges, from 205-219Vac to 252 to 265Vac. The amplifier comes wired from the factory for 240Vac.
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 shooses bias voltage for best linearity on SSB or lowest dissipation on CW.
The Operate/Standby switch, in Standby, maintains the tube's filament and plate voltages while allowing "barefoot" operation.
Includes 12 vold DC auxiliary jack and an "XMT" LED to provide indication of proper amplifier keying by the exciter.
Power required: 240Vac, 15 Amps.
Frequency coverage: 1.8,3.5,7,14,21MHz & WARC bands. User modifiable for 28MHz (FCC license required).
Size: 18.5"D x 17"W x 10"H. 77 pounds.
WEIGHT : 77LBS
TUBES : [1] EIMAC 3CX1500/8877
SHIPPING WEIGHT : 50lb UNIT,3 lb TUBE,35lb XFRM
POWER SUPPLY : FULLWAVE BRIDGE,CAPACITOR INP
OUTPUT POWER : 2500W PEP, 1500W CW
MAXIMUM DRIVE POWER: 100W
KEYING : +12Vdc @ 100mA
INPUT CIRCUIT TYPE : Pi-NETWORK,SLUG TUNED COILS
FREQUENCY COVERAGE : 160,80,40,30,20,17,15m
FREQUENCY COVERAGE : 10/12m WITH MODIFICATION
EFFICIENCY(SSB) : (ENVELOPE CREST) 62% TYPICAL
EFFICIENCY(CW) : 65% TYPICAL
DRIVE REQUIREMENT : 65W TYPICAL FOR FULL POWER
DIMENSIONS : 18.5"D x 17"W x 10"H