[vorlonwolf]

Ron, The literature I was refering to was Philco-Essential Service Data on All Models that lists the IF for model 43 as 460kc. Also the book "Complete Instructions for Adjusting All Philco Receivers" lists the IF as 460kc on page 23. This radio also has a type 44 in the 1st detector and Riders 3-14 says that the 44 is replaced with a type 36 but it doesn`t state that the 1st detector should be changed to a type 36. The power Xformer is a replacement that only puts out 450v plate to plate-about 216 volts at the 1st filter cap [prt. no. 72 ]but I have left it in until all of the repair work it needs is done. I plan to replace it before alignment and that lead to my question about the IF difference as the voltages will be higher when the new Xformer is installed. Thanks, Mike.