The PHILCO Phorum

Anybody know if you can test 01a tubes? There is no listing for them for my Precision series 612 tube tester.
I'm going way back on my next project, a 1925 Grebe Synchrophase MU-1, and would like to know what kind of shape the tubes are in. Should be an interesting project. I've never worked on a set this early before. Looks to be very well made and I've read that they are considered to be the best TRF sets ever designed.
Kevin

Look for 201 or 301. I have a hickock and a knight that both test them. Try the B.A.M.A. site for obsolete tube manuals for your tester.

http://oldradios.50webs.com/precision/60...series.pdf This manual has 01a data for your tester

http://oldradios.50webs.com/precision/ this is the parent site with all info on 612 tester