Collins Aerospace Museum

233D Transmitter Restoration Project

Nothing earthshaking this week, but I think we are starting to get a few things nailed down.

I have been concerned that the A0 shutdown command was only shutting off the PA filaments.

Turns out you have to be in remote to really be able to use the shutdown function. Also determined that when the system is in remote, applying power to the transmitter turns everything on, including the high voltage. With the power bay switch in remote, I can send dial functions from the tone control panel that shuts down the transmitter when the tone control panel is set to local. The importance of all this is that it means the basic control system is working properly.

We need to make sure the mode switch is in the tune position because the HV time-delay relay has been bypassed.

Jules has been going through the exciter tune up process that involves the Autotunes. We need a bigger wrench than the 1-1/8” that we have!

Probably will need a bigger hammer at some point, too!