05-08-2016, 04:58 PM
Welcome and Congrats!
The 680 is a rare find and Philco's top of the line set for'36. Second in line to have the variable bandwidth IF( the 200X in 1934 being the 1st and the 37 and 38 116/690 3rd and 4th.)Philco's departure in the the High Fidelity line of sets. Where not a lot built so probably not a lot of hands on info on this model. I would be careful about replacing the caps inside the bakeolite blocks you may find that there is an inductor inside one rather than a cap. Some of the HiFi chassis use a small choke to attenuate the hf audio response in the low level audio stage.
Have fun but go slow.
Terry N3GTE
The 680 is a rare find and Philco's top of the line set for'36. Second in line to have the variable bandwidth IF( the 200X in 1934 being the 1st and the 37 and 38 116/690 3rd and 4th.)Philco's departure in the the High Fidelity line of sets. Where not a lot built so probably not a lot of hands on info on this model. I would be careful about replacing the caps inside the bakeolite blocks you may find that there is an inductor inside one rather than a cap. Some of the HiFi chassis use a small choke to attenuate the hf audio response in the low level audio stage.
Have fun but go slow.
Terry N3GTE
