09-24-2019, 12:21 AM
Installed the BC band antenna coil that Ed so kindly sent me into the radio. That solved a tuning problem I had with my home-brew coil. Re-aligned the radio using the procedure outlined in the Riders information. All bands tuned up very close. The BC band is within a couple of khz all the way until over 1450 khz. Then it's off by about 5 khz. I can live with that! Bands 4 and 5 are lined up as a compromise between 10.8 and 21.6 mhz. There was almost no compromise. Both are very close at that frequency. In reality I used 10 and 20 mhz as opposed to the suggested frequency. The suggested frequency comes from the original Philco single frequency, crystal controlled generator using harmonics to tune the entire radio. Sensitivity is good and the inter station silencer works well. I like it adjusted so that inter station noise is greatly reduced, but not entirely eliminated. The wire wound pot for that was open at one spot in the winding. A thin, narrow, tin plated piece of metal forced in between the windings and the insulator jumpered the open winding. I'll see how long it lasts.
I've replaced the grille cloth but will need to refinish the cabinet. I'll put it in the que. Not my favorite job and I have several to do. I'm procrastinating!
I'm pleased with the results and especially like the re-plated capacitor can and the tube shields. I'm glad that works as ugly, oxidized tube shields have always bugged me on other projects where I get the chassis looking halfway decent. I'll probably be going back to other projects to remedy the situation.
The stickers on the tubes are from 1937 and 1938 from a repair shop in Maine. The cabinet has had the normal tube layout diagram removed and was replaced by a shipping label sticker from the same company. I think I'll leave that as it is part of the history of the radio. Interestingly, the phone number of the "Elmer L. Dobbins" company in West Jonesport, ME is "77". I wonder if it still works.
The radio is tuned to WBZ, Boston. Comes in loud and clear here at night along with Zoomer Radio out of Toronto, my favorite station, and WSM when I'm in the mood for old country or bluegrass.
I've replaced the grille cloth but will need to refinish the cabinet. I'll put it in the que. Not my favorite job and I have several to do. I'm procrastinating!
I'm pleased with the results and especially like the re-plated capacitor can and the tube shields. I'm glad that works as ugly, oxidized tube shields have always bugged me on other projects where I get the chassis looking halfway decent. I'll probably be going back to other projects to remedy the situation.
The stickers on the tubes are from 1937 and 1938 from a repair shop in Maine. The cabinet has had the normal tube layout diagram removed and was replaced by a shipping label sticker from the same company. I think I'll leave that as it is part of the history of the radio. Interestingly, the phone number of the "Elmer L. Dobbins" company in West Jonesport, ME is "77". I wonder if it still works.
The radio is tuned to WBZ, Boston. Comes in loud and clear here at night along with Zoomer Radio out of Toronto, my favorite station, and WSM when I'm in the mood for old country or bluegrass.
