What should the current be on a 4CX250B linear amplifier?

What should the current be on a 4CX250B linear amplifier?

The 4CX250B linear. Operation is very simple, The only controls are tune, load, bandswitch, meter and bias set. Bias should be set for about 100 to 150 ma resting current with 2000 volts on the plates, Once set, this current does not need adjustment.

What is maximum dissipation of 4CX250B / 7203?

The 4CX250B/7203 has a maximum plate dissipation rating of 250 watts and a maximum input power rating of 500 watts. The 4CX250B/7203 is designed to operate with a heater voltage of 6.0 volts.

What is the power rating of a 4cx250fg heater?

This tube utilizes a ruggedized internal structure and utilizes a welded anode cap for improved reliability. The 4CX250FG/8621 has a maximum plate dissipation rating of 250 watts and a maximum input power rating of 500 watts. The 4CX250FG/8621 is designed for operation at a heater voltage of 26.5 volts.

Where is the blower on a 4CX250B linear?

These readings are with full carrier. The side view of the linear shows the 4CX250B ‘s mounted horrzontalfy with the blower fastened to the back of the cabinet. The 4CX250B linear. Operation is very simple, The only controls are tune, load, bandswitch, meter and bias set.

What kind of amplifier is used for CW?

General description The amplifier was designed for high power operation in CW or SSB mode and employs a pair of ceramic tetrodes type 4CX250B in push-pull configuration. The original construction was developed and published by KY4Z, but later improved by LA1BEA, DF8LC and LAØBY.

Can a 1cx250b be used as a grounded grid?

The 1CX250B tube is not suitable for regular grounded grid operation (that is? with the control and screen grids both grounded), for screen and grid currents will run too high and ruin the tube, But they work fine as tetrodes with drive applied to the cathode, the grid grounded and the screen at about 350 volts.