02-27-2011, 08:33 PM
Thanks for the responses. I do appreciate the inputs.
I don't think doing my own winding is in the cards. Though I was able to locate some info on bypassing defective IF transformers by using a coupling capacitor and a resistor. I might give that a try and hope for the best until something comes up. Still other issues to deal with in this set. One step at a time.
The Model 51, Baby Grand, was the successor to the Model 50 and used a superheterodyne circuit and five tubes. The radio is a superhet and not a TRF. The tubes are 24, 35, 24, 47 & 80. Even on the dial escutcheon it says Superhet 5 tube. The illustrated parts listing and the chassis component view, as found in Riders Volume 2, shows items # 12 and #16 as the 1st IF and 2nd IF respectively. They are identical components, both have two windings placed on a wooden spool and housed in a small round can. Since both are not adjustable, they have compensating capacititors attached, which I asume are for tuning the circuit for 175kc. This is what makes it difficult to find a replacement.
I don't think doing my own winding is in the cards. Though I was able to locate some info on bypassing defective IF transformers by using a coupling capacitor and a resistor. I might give that a try and hope for the best until something comes up. Still other issues to deal with in this set. One step at a time.
The Model 51, Baby Grand, was the successor to the Model 50 and used a superheterodyne circuit and five tubes. The radio is a superhet and not a TRF. The tubes are 24, 35, 24, 47 & 80. Even on the dial escutcheon it says Superhet 5 tube. The illustrated parts listing and the chassis component view, as found in Riders Volume 2, shows items # 12 and #16 as the 1st IF and 2nd IF respectively. They are identical components, both have two windings placed on a wooden spool and housed in a small round can. Since both are not adjustable, they have compensating capacititors attached, which I asume are for tuning the circuit for 175kc. This is what makes it difficult to find a replacement.
