WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
They are from a Daven transmission measuring equipment. they are labeled X1 and X2. The trafos are labeled T1 and T2 and the inductors are labeled L1 and L2. They are connected as frequency matching as in the panel of the equipt.
