Ameritcon Al-80b ( $1000.00) used pickup preferredOverview Brand: Ameritron Manufacturer's Part Number: AL-80B Part Type: Amplifiers Product Line: Ameritron HF Power Amplifiers DXE Part Number: AME-AL-80B UPC: 650619013726 Line Cord NEMA Plug: 120 Vac, 5-15P Amplifier Type: Tube Amplifier Band Coverage: 160-15 meters Amplifier Power Output PEP: 1,000 watts Amplifier Input Power: 100 watts Amplifier Supply Voltage: 120 Vac Maximum Line Current: 12 A External Power Supply: No Amplifier Width: 14.500 in. Amplifier Height: 8.500 in. Amplifier Depth: 15.500 in. Amplifier Weight: 48.00 lbs. Quantity: Sold individually. Notes: Ameritron AL-80B amplifiers carry a 2-year manufacturer's warranty. Only this model has a two year warranty, excluding vacuum tube. Note: For additional information, please look at the files under the “Documentation” tab. Ameritron HF Power Amplifiers You get up to a full kilowatt PEP output from a whisper-quiet compact desktop linear with Ameritron AL-80B Linear Amplifiers. They cover all bands from 160-15 meters, including WARC and MARS and may be user-modified for 10 and 12 meters by FCC licensed Amateurs. You get up to 1,000 watts output on SSB, 800 watts output on CW, and 500 watts output on RTTY. The AL-80B amplifiers' exclusive Dynamic ALC gives you high-level/low-distortion RF processing. When activated, they can more than double your average SSB power and produce up to 6 dB improvement in intelligibility. This maximizes your talk power without distortion and splatter. A convenient front panel control lets you adjust your output power level. AL-80B amplifiers' exclusive instantaneous RF bias completely turns off the 3-500ZG tube (except filaments) between words or CW dits and dahs. This feature eliminates wasting RF power as heat, to give you cooler operation and longer component life. Ameritron AL-80B amplifiers use a genuine 3-500ZG tube--not the cheaper, less reliable 3-500 tubes used by some competitors. The guts of the AL-80B amps are their heavy duty power supplies. A 26 lb. transformer using a high silicone steel core, computer-grade capacitors, heavy duty bleeders, and ten 3 amp, 1,000 V power rectifiers give you a stiff 2,700 V fully loaded. AL-80B amplifiers are built on a rugged steel chassis. They have a separate RF compartment that's fully shielded to keep RF from leaking out. This keeps RFI and TVI to a minimum. Their superb RF design and layout, Hi-Q tank circuit, and commercially rated RF power components give you nearly 70 percent plate efficiency over most of the amateur bands. Power goes into your antenna instead of heating up your amplifier! A whisper-quiet internal fan draws in cool air over power supply components and pressurizes the tube compartment to remove heat for long life. A 50 ohm broadband Pi-network tuned input is used. Even the fussiest solid-state transmitter will deliver full power to the amp. Low loss slug tuned coils, tunable from the rear panel, let you optimize performance. A carefully designed Pi/Pi-L output network using optimum Q for each band gives you exceptionally smooth tuning, extremely wide matching range, full band coverage, and peak performance at all power levels. Ball bearing Venier reduction drives with logging scales on both the plate and load controls make tuning precise and easy. You can also rapidly retune to your favorite frequency. Massive inrush current will eventually damage your amplifier, so AL-80B amplifiers feature special Step-Start inrush protection that's easy on your tube and power supply components. Another exclusive Ameritron feature is the multi-voltage power transformer that lets you optimize for different line voltage. Select from 14 different primary voltages from 90-140 Vac and 205-250 Vac. The high-voltage secondary can be wired to reduce plate voltage for efficient operation below 400 watts for use outside the USA. Ameritron's dual illuminated cross-needle meters give you four separate meters to monitor your operating conditions. Grid current, plate current, and forward PEP output power are continuously monitored to tell you of improper loading and abnormal conditions with your amps. The fourth meter can be switched to monitor tube DC plate voltage, reflected PEP power, SWR of the output, ALC voltage to your rig, and the grid current.