tube digital interest / was Re: Running Computers Cold

joe lobocki wrote: I figure the depths of winter is a good time to fire up my larger tube equipment to cycle it for a while or work on it: get the dual benefit from the energy use. It's cosy working on it in the winter, in the summer one can end up dripping all over it. -- Speaking of digital tube equipment, while I'm not ready to get rid of this stuff myself just yet, I'd like to ask whether others (the nearer the better) might have any interest in tube-based digital frequency counters and such; e.g: http://people.cs.ubc.ca/~hilpert/e/edte/HP521C/index.html http://people.cs.ubc.ca/~hilpert/e/edte/HP524B/index.html http://people.cs.ubc.ca/~hilpert/e/edte/HP524C/index.html No, they're not computers (unless one really wants to stretch the definition), they are boat anchors and of limited to no practical use, but they are manageable (barely) examples of vacuum-tube-based digital equipment. A few months ago I was offered another 524B, I declined as it would have been my 3rd 524, 2 is (more than) enough for me. I believe the thing has since been scrapped or dismantled. Should such a situation arise again I'd like to have an idea whether I should make more of an effort to find another home for such.