Henry Radio 3K Ultra Amplificatore
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The 3K Ultra and 8K Ultra are a family of high quality, console model, single stage linear RF amplifiers designed around rugged and economical ceramic triode power tubes. All models employ the same grounded grid design to insure simplicity of concept and all employ conservatively rated components to insure years of reliable operation. The amplifiers are completely self-contained and use the highest quality RF, DC and AC components available today. AH that is necessary for operation is an HF Transceiver, a 230 VAC AC mains source (other voltages available) and a 50 ohm Antenna system. The 3K Ultra uses a single 3CX1200D7 tube offering about 11 to 13 dB of power gain (the output power is approximately 20 times the input power). This makes it easy to drive to full output with most popular low power solid state transceivers. It will delivery 1500 watts PEP and 1500 watts continuous wave into a 50 ohm load. FCC regulations require that the units supplied in the United States can not be capable of operating above 25 MHz. The 8K Ultra uses a single 3CX3000A7 tube ovvering about 13 dB of power gain which will deliver a minimum of 3500 watts PEP in SSB service and 2500 watts in a CW mode. It is not available for sale to amateur radio operators in the United States. With proof of a valid amateur service license, Henry Radio will give a United States purchaser information on how to extend the frequency coverage to 30 MHz. All other customers are considered export customers and their units will be supplied with coverage through 30 MHz. The 3K Ultra and 8K Ultra are for amateur, industrial, scientific, medical, commercial and export users in the 1.8 through 30 MHz frequency range. All models are designed around the same basic RF chassis which employs a pair of unique rotary tank inductors not found in any other line of production amplifiers. All models can be used for AM, FM, SSB, CW RTTY or pulse operation. Frequency coverage is instantaneously in any 200 KHz segment between 1.8 and 30 MHz and can be tuned to any frequency between 1.8 and 30 MHz. The amplifiers are shipped with their tubes installed at the factory. No tube installation is required.
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07 August 2015
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