it has a metal top. i was working to get a ham license and these things radiate square waves like crazy. that was my attempt to quieten it down some. helped. there’s a corcom ac filter bolted inside.
haven’t decided what to do with it yet—improve its build some, or restore it. in this form there’s very little problem with cable problems... but it’s ugly...
if anyone has a list of the screw sizes for the model 1 and the expansion interface, i may put it back. i have the cases, just no screws.