R. L. Drake L7 Wide Range Linear Ham Radio Amplifier 2000 Watts NO POWER SUPPLY
PLEASE READ: Appears to be in good used condition. No power supply so we were not able to test this unit. Please review all photos, including the internal shots showing all components. Came from the estate sale of a large ham radio collection. Please ask if you have any questions. This unit has graphite tubes, which provides for instant warm up. The tubes are cooled by a quiet, dual-speed internal fan. A transmitting AGC circuit controls the exciter gain to allow the highest average power without peak clipping.
An internal changeover relay feeds the antenna through (bypassing the L7) when the L7 is turned off. A pair of relay contacts bias the output tubes to cutoff, eliminating unwanted heat and diode noise when receiving. Two meters indicate plate current, grid current, plate voltage, RF output power, and RF reflected power.
