The Eldico Model SSB-1000 Linear Amplifier is a completely self-contained linear amplifier Incorporating the better features of modern engineering design. Together with any type of exciter, it provides a full kilowatt of talk power on the 80, 40, 20, 15, 11, and 10 meter amateur bands. Great pains have been taken to provide the utmost In convenience of operation, modern attractive styling, compactness without crowding, plus rugged construction and dependable operation. It is completely self-contained, virtually free of television Interference due to Its advance design and type of operation (AB1), and with Its exciter has talk power equal to transmitters of many times its size. 2. FEATURES (a) LOW DRIVE REQUIREMENTS. Eldico's SSB-1000 Linear Amplifier needs only 3 watts peak envelope power to drive it to Its full Input power rating of 1000 watts peak envelope power without flattening. This allows the SSB-1000 to be used with any commercial or amateur built exciter. (b) 1000 WATT PEAK POWER INPUT. The SSB*1000 Linear Amplifier loafs along at Its full rated input with extremely low third order distortion. Operating In pure AB1, It assures linear amplification, minimum band width, and faithful reproduction of its Input signal. (c) RADIAL BEAM POWER TETRODES. The use of Elmac's new 4X250B radial beam power tetrodes allows compactness yet high efficiency and dependability. Ample plate dissipation - 500 watts - for rated power input, together with excellent high frequency characteristics makes this tube the Ideal choice for this particular application. The high power sensitivity of this tube makes Class AB1 operation feasible with little or no sacrifice in efficiency, yet with remarkably Improved linearity. (d) RUGGED POWER SUPPLY. A heavy duty, compact, power supply is self-contained and supplies 2000 volts DC at far above the current requirements, the regulated screen voltage, bias voltage, and filament power. A 4 to 24 henry swinging choke and 10 mfd oil filled capacitor are used for good power regulation. A heavy duty rotary blower provides more than adequate cooling of the 4X250B's.