On 10/11/16 9:43 AM, Eric Christopherson wrote: > Sark on IRC told me you can use pretty > much any tube of the right size Depending on the length of the HV lead, you may need side or bottom anode button. VT100 is bottom, newer terminals tend to have it on the side. I've got an ADM3 in storage nearby, there are probably pics of the insides on the web, though.