Manual | Buy One Now | Checkout Commander HF-2500 1500 Watt High Frequency RF Amplifier Price: $3995.00 No-Compromise When Palstar bought the Command Technologies high power amplifier line, we knew that we were taking over a proud tradition of quality and performance. But, as good as they were, they represented the state of the art of an earlier time. Palstar's engineers immediately undertook a modernization and improvement program. Palstar's Command Technologies amplifiers now incorporate a microprocessor-based controller to provide more precise T/R and electronic bias sequencing. The amplifiers now feature true step-start, limiting in-rush current to the HV power supply and also to the tube filaments. This translates into greater reliability and tube life, since the HV rectifier, filter stack, tube filaments, and even the fuses, are not stressed on startup. The new keying interface is now opto-isolated and fully compatible with solid-state transceivers, requiring the transceiver's keying circuit to only sink 20mA @ 5VDC. The controller, HV power supply, and tuned input circuit boards are now fully silk-screened and solder-masked, with plug-in connections enabling them to be easily removed for repair or trade out. New dual-scale cross-neddle metering provides continuous readouts of grid current, plate voltage and current, and relative power output without the need to switch between functions. The Commander HF-2500 is a no-compromise HF high-power classic. A grounded grid, class AB2 HF linear power amplifier, the Commander HF-2500 utilizes a pair of Eimac 3CPX800A7 pulse rated ceramic metal triodes. These robust tubes give the HF-2500 a 100% duty cycle at its rated 1500 Watts output with nominal 50 Watts of drive, making it the logical choice for high duty cycle modes such as RTTY and SSTV. The no-compromise design includes a conservatively rated voltage-doubler power supply, a massive band switch, and spectral purity that established a higher standard in amateur radio amplifiers. Always a great amplifier, the HF-2500 is now even better! One Year Palstar Factory Warranty Palstar stands behind the HF-2500 with a one (1) year limited warranty. Click here for eHam.net independent product reviews of the Commander HF-2500. Order online: Order by phone:   1-800-773-7931 (USA Toll-Free)                              1-937-773-6255     (International) Order by fax/mail: Click here for order form Specifications Band Coverage: 160, 80, 40, 20, 17, 15, 12, and 10 meter amateur radio bands. High speed electronic bias switching. True step-start control circuitry. Opto-isolated keying interface. Types of Emissions: SSB, FM, CW, AM, RTTY, SSTV. Driving Power Required: 20 to 60 Watts nominal at rated continuous carrier output. Maximum Output Power: 1500 Watts Continuous Carrier. Duty Cycle: 100% in Amateur service at 1500 watts output power Input impedance: 50 Ohm unbalanced Output Impedance: 50 Ohm unbalanced: SWR 2:1 or less Harmonic Suppression: Exceeds all FCC requirements Metering (continuous): Relative power, grid current, plate voltage & plate current Shipping Weight: 28 Lbs. (12.7 kg); (Transformer shipped separately, 33Lbs. (14.9kg)). Cabinet Size: 18.25" W x 8.5" H x 20.75" D (46.3cm x 21.6 cm x 52.7 cm) Tube Compliment: two 3CPX800A7 pulse rated ceramic metal triodes. Cooling: pressurized chassis forced air. Power Requirement: 200/234 VAC, 50/60 Hz, 20 Amperes Images: HF-2500 Front View | HF-2500 Rear View | HF-2500 RF Deck Manuals: Commander HF-2500 Manual (Click here to download PDF)