Hickok 121 Cardmatic found today.

[MadMan]

https://elektrotanya.com/hickok_card.../download.html

idk if that will help. May give you some ideas. Also you need to dl the stupid djview program to open the file, there's a dl for that in the fine print.

Other than that, my recommendation would be to use existing cards to determine which holes do what. Google for Hickok test data or tube test sheet, and you can use that data to cross-reference what you have on the cards for a given tube, and then determine what hole does what. Knowing that, you can then make your own cards. And maybe test some known-good tubes first to make sure your new cards work right.

Also:
https://www.flickr.com/photos/70039806@N00/16037911425/

[mr_fixer]

Originally Posted by MadMan

https://elektrotanya.com/hickok_card.../download.html

idk if that will help. May give you some ideas. Also you need to dl the stupid djview program to open the file, there's a dl for that in the fine print.

Other than that, my recommendation would be to use existing cards to determine which holes do what. Google for Hickok test data or tube test sheet, and you can use that data to cross-reference what you have on the cards for a given tube, and then determine what hole does what. Knowing that, you can then make your own cards. And maybe test some known-good tubes first to make sure your new cards work right.

Also:
https://www.flickr.com/photos/70039806@N00/16037911425/

Thanks but i already have that manual, The cards don't interchange between a 121 and the other models. I'm going to keep my eyes open for the Hickok 121 card making kit with blank cards, card punch, and the book used to select the holes to punched. If i find one I'll scan and post it here for everyone.