Ric, Did the removal of the Bendix receiver necessitate the removal of the Bendix control box?
As I understand it, what we are calling the control box included a readout that gives the compass heading when a null is found on a homing signal. When the Bendix receiver was removed, the overhead open loop via its coupler was then connected to the original WE receiver under the co-pilot's seat. And the control box could likewise be connected to the WE receiver, without necessarily being moved or removed? And the control box would remain connected directly to the overhead loop, because it has to know what compass direction the loop is facing, as it is being turned?
If the Bendix control box were to be removed, what device would then provide that crucial compass heading?
This is getting into the nitty-gritty of the DF apparatus and procedure on the second attempt, but I keep wondering, I guess we all do, whether there was something about the apparatus itself that could have misled AE into thinking that she could home in on a high-frequency signal. She requested 7500 kcs from Itasca, and then misdiagnosed the problem when she could not get a null on Lae's high frequency signal on July 1.