Vacuum Tube - 1LA6, Heptode
New-Old-Stock (NOS) tube.
The 1LA6 is a low-voltage, low-current drain battery type pentagrid converter. It is designed for service as an oscillator and mixer in superheterodyne receivers which require only 90 volts of "B" battery and a single dry cell "A" battery. Its electrical characteristics are similar to those of the 1A7G.