Then there would be one wire from each end of the output transformers winding that feed to each of the '45's
Shut down if ripple inches up and shows its ugly head,greater than 3.5 V AC.
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Everything in this set is intact underside wise. no apparent repairs have been made. I got it off E-bay cuz it just looked neat. the e-bay pics show it on and all tubes lit but no audio exept static..he didnt have ant hooked up..duh Looked it over and decided it would be in the best interest for the set and myself if I recapped it and checked resistors..but to do that means finding values..
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: : : :Sir DON . . . . : : : :From your photos, seems like you have an outboard mounted AF output transformer. : : :Accountability for the 5 wires would be 2 that feed to the field coil of the speaker ( coil is hidden within the cavity ). : : :Then there would be one wire from each end of the output transformers winding that feed to each of the '45's :plates, then the fifth wire would be the center tap of the output transformer which goes to high level B+. : : :No chance that this was the set that had wires pulled off from it ?, otherwise it should just be plug in and the set is :then ready for further initial analysis. : : :To wit, if the power supply is evaluated by VERY slowly bringing up AC line input on VARIAC, while monitoring :B+ for DC level and also test in AC mode for ripple. : : Shut down if ripple inches up and shows its ugly head,greater than 3.5 V AC. : : : : : : : :73's de Edd : : : : : |
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Suspect that this may be an Airline chassis which was made for Wards by several different manufacturers. I have one am rebuilding that has almost the same tube makeup except for three 24's and two 27's. The 1st. 27 is the detector and the second is the 1st. audio with the 45's listed as the 2nd. audios. Haven't determined the model # of mine as the back cover was missing but was made by U.S. Radio & Television Corp. in Marion, Indiana. My chasis # is a 29 and the Riders schematic lists it as a model 29 - pre 1932.
Yours is probably near same vintage? You can go thru the Airline and or U.S Radio/TV schematics to find same tube makeup and attempt to find correct chassis/model # by tracing all components and wiring -a lengthly process to say the least! Had to trace components this way on mine as the schmetic did not list component #'s only values which is typical for this vintage. Not sure what your 4th. knob may be for?
Good Luck.
::She is a TRF circut, tube lineup is 4- 24a,27,2- 45, 80 from what i gather the 24a tubes are rf amp. then 27 audio dect. 45 are push-pull audio amp and 80 rectifier tube. dont understand the four knobs one is tuning obviously then one is a switch and one is a pot? one is one is pot with switch like power and vol. switch for local/ long dist? one tone control?
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:Don,
:Suspect that this may be an Airline chassis which was made for Wards by several different manufacturers. I have one am rebuilding that has almost the same tube makeup except for three 24's and two 27's. The 1st. 27 is the detector and the second is the 1st. audio with the 45's listed as the 2nd. audios. Haven't determined the model # of mine as the back cover was missing but was made by U.S. Radio & Television Corp. in Marion, Indiana. My chasis # is a 29 and the Riders schematic lists it as a model 29 - pre 1932.
:Yours is probably near same vintage? You can go thru the Airline and or U.S Radio/TV schematics to find same tube makeup and attempt to find correct chassis/model # by tracing all components and wiring -a lengthly process to say the least! Had to trace components this way on mine as the schmetic did not list component #'s only values which is typical for this vintage. Not sure what your 4th. knob may be for?
:Good Luck.
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:The swithch is prob. a tone control. Or unlikely ..but it could be another power switch. I have a few Montgomery Wards Airline sets that have a switch for when you power line voltage was low you could switch the switch and the power would be boosted....hmmm
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:::She is a TRF circut, tube lineup is 4- 24a,27,2- 45, 80 from what i gather the 24a tubes are rf amp. then 27 audio dect. 45 are push-pull audio amp and 80 rectifier tube. dont understand the four knobs one is tuning obviously then one is a switch and one is a pot? one is one is pot with switch like power and vol. switch for local/ long dist? one tone control?
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::Don,
::Suspect that this may be an Airline chassis which was made for Wards by several different manufacturers. I have one am rebuilding that has almost the same tube makeup except for three 24's and two 27's. The 1st. 27 is the detector and the second is the 1st. audio with the 45's listed as the 2nd. audios. Haven't determined the model # of mine as the back cover was missing but was made by U.S. Radio & Television Corp. in Marion, Indiana. My chasis # is a 29 and the Riders schematic lists it as a model 29 - pre 1932.
::Yours is probably near same vintage? You can go thru the Airline and or U.S Radio/TV schematics to find same tube makeup and attempt to find correct chassis/model # by tracing all components and wiring -a lengthly process to say the least! Had to trace components this way on mine as the schmetic did not list component #'s only values which is typical for this vintage. Not sure what your 4th. knob may be for?
::Good Luck.
::
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:She is a TRF circut, tube lineup is 4- 24a,27,2- 45, 80 from what i gather the 24a tubes are rf amp. then 27 audio dect. 45 are push-pull audio amp and 80 rectifier tube. dont understand the four knobs one is tuning obviously then one is a switch and one is a pot? one is one is pot with switch like power and vol. switch for local/ long dist? one tone control?
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Don,
I think you have a Westinghouse model WR-5. The tube line up matches along with the chassis design. The schematic will be listed as an RCA Radiola 80. I had a WR-5 several years ago and recognised the cabinet.
Hope this helps,
Jon.
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::She is a TRF circut, tube lineup is 4- 24a,27,2- 45, 80 from what i gather the 24a tubes are rf amp. then 27 audio dect. 45 are push-pull audio amp and 80 rectifier tube. dont understand the four knobs one is tuning obviously then one is a switch and one is a pot? one is one is pot with switch like power and vol. switch for local/ long dist? one tone control?
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