[Boatanchors] Questions

[AWFremmer at aol.com]

Fellow Collectors Restorers,
 
I have two questions.  I have a homebrew transmitter with  a power 
transformer marked ST-3041 followed by 394203.  Any idea as to its  specifications?  
 
I have a B & K Dyna-Jet Model 707 Tube Tester.  I  would like to test some 
1625 tubes but the tube chart doesn't list them or  807's.  Any suggestions?
 
Thanks in advance for all your help.
 
Alan - KB2HEI