Eimac continued to advance the technology and developed modern, high-power ceramic tubes which incorporate innovative Pyrolytic graphite grids for short-wave and UHF television broadcast. Regarded as a technical innovator, Eimac has become the worldwide leader in broadcast tubes with customers located in virtually every country in the world.

The 254W is a radiation-cooled tube suitable for use as an RF power amplifier, frequency multiplier or oscillator, and as an AF power amplifier and modulator. The tube is widely used in base-station communications equipment and is exceptionally efficient in VHF operation.

2024年7月9日 · Publisher Eimac Collection dlarc-catalogs; dlarc; americana Contributor Digital Library of Amateur Radio & Communications Language English Item Size 239.6M

Eimac is a trade mark of Eimac Products, part of the Microwave Power Products Division of Communications & Power Industries. It produces power vacuum tubes for radio frequency applications such as broadcast and radar transmitters.

EIMAC transmitting tubes are recommended for new equipment design and for replacement of older triode, tetrode and pentode tubes in the redesign of older equipment. Compact EIMAC tubes feature reduced internal coupling between input and output circuits, low internal inductance and capacitance, improved linearity and high operating efi ciency.

Varian EIMAC has pioneered the use of Pyrolytic grids in power tubes for the broadcast industry, making use of a novel laser-milling operation to achieve in-creased tube performance, stability and higher power output.

This catalog is intended for use as a guide in selecting the right Eimac product for your application. Products are divided into categories for RF amplifier and RF oscillator applications. Both triodes and tetrodes are presented for amplifier applications. The bar charts give a graphical means to select tubes based on output power and cooling ...

The Eimac 304TH is a medium-mu power triode intended for use as an amplifier, occilator or modulator. It has a maximum plate dissapation rating of 300 watts and a maximum plate voltage rating of 3000 volts at frequencies up to 40 Mc. 1200 watts plate power output with 53 watts driving power. New Old Stock * New In Box * Not Available for Export

8251 3CX2500H3 The Eimac 3CX2500 family of medium-Mu triodes are widely used in broadcast and industrial heatin. applications. The -A3 version has a coaxial base, the -F3 has flexible leads on all terminals and the –H3 has flexible filament leads and …

Varian Eimac developed super-power tubes for broadcast service using pyrolytic graphite grids made using a novel laser-milling operation to achieve increased tube performance, stability and higher power output.