Vacuum Tube - 5763, Tetrode, Beam Power
New-Old-Stock (NOS) tube.
The 5763 is a heater-cathode type transmitting beam power amplifier in the 9 pin miniature construction. It is intended for use in compact, low-power mobile transmitters and in the low-power stages of larger fixed station transmitters. The 5763 is particularly useful in the doubler and tripler stages of transmitters.