Has anyone ever seen or maybe even built one of these (or a similar product ?). Interested in it because I would like to EXACTLY know what voltage the heater gets from the replacement Amplifone HVTs. After all, the 25” med-res tube I’ve got in my SW cockpit is the only thing I probably will ever have around here…. Schematic looks simple enough…..finding time to build it is something else and regretfully no PCB lay-out with the article… Cheers, André André Huijts andre.huijts@upcmail.nl _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/