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Schematic for Emerson 7BW-179-15
2/2/2007 7:51:28 AMAndy Rolfe
Hi everyone!
I purchased the above small table wooden radio, probably dating from the late late 30's, early 40's. There are no other identifiable marks on the chassis other than the above numbers on the back of the set. Now this had to be the most discusting and filthy looking chassis that I've ever come across with a rectifier tube laying loose inside the chassis and the plug had been cut off. Normally I don't do this, but I tested the rectifier tube, found it was bad and put in a new rectifier tube; put a plug on and plugged in the set through an isolation transformer and I couldn't believe the multitude of stations it picked up, all crisp and clear!! So now I've decided to take it all apart, clean it, raecap it, etc. and give it a new life. Any information such as a schematic for this set would be be appreciated. Andy
2/2/2007 9:50:11 AMCarl
:Hi everyone!
:I purchased the above small table wooden radio, probably dating from the late late 30's, early 40's. There are no other identifiable marks on the chassis other than the above numbers on the back of the set. Now this had to be the most discusting and filthy looking chassis that I've ever come across with a rectifier tube laying loose inside the chassis and the plug had been cut off. Normally I don't do this, but I tested the rectifier tube, found it was bad and put in a new rectifier tube; put a plug on and plugged in the set through an isolation transformer and I couldn't believe the multitude of stations it picked up, all crisp and clear!! So now I've decided to take it all apart, clean it, raecap it, etc. and give it a new life. Any information such as a schematic for this set would be be appreciated. Andy

Hi Andy,
If you post the tube line up, we may be able to identify the chassis.
Carl

2/2/2007 5:39:38 PMEdd
::Hi everyone!
::I purchased the above small table wooden radio, probably dating from the late late 30's, early 40's. There are no other identifiable marks on the chassis other than the above numbers on the back of the set. Now this had to be the most discusting and filthy looking chassis that I've ever come across with a rectifier tube laying loose inside the chassis and the plug had been cut off. Normally I don't do this, but I tested the rectifier tube, found it was bad and put in a new rectifier tube; put a plug on and plugged in the set through an isolation transformer and I couldn't believe the multitude of stations it picked up, all crisp and clear!! So now I've decided to take it all apart, clean it, raecap it, etc. and give it a new life. Any information such as a schematic for this set would be be appreciated. Andy
:
:Hi Andy,
:If you post the tube line up, we may be able to identify the chassis.
:Carl
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Looks like those might be universally filthy...
Re:
http://i2.ebayimg.com/05/i/08/fa/33/63_1.JPG

can't tell if this one has had the canned filter ripped out of its chassis corner or if it uses units downstairs.
Also, to its advantage, is its speaker a bit larger than the norm 4 inch pip-squeak in most units.
73's de Edd

2/4/2007 4:36:06 PMAndy Rolfe
:::Hi everyone!
:::I purchased the above small table wooden radio, probably dating from the late late 30's, early 40's. There are no other identifiable marks on the chassis other than the above numbers on the back of the set. Now this had to be the most discusting and filthy looking chassis that I've ever come across with a rectifier tube laying loose inside the chassis and the plug had been cut off. Normally I don't do this, but I tested the rectifier tube, found it was bad and put in a new rectifier tube; put a plug on and plugged in the set through an isolation transformer and I couldn't believe the multitude of stations it picked up, all crisp and clear!! So now I've decided to take it all apart, clean it, raecap it, etc. and give it a new life. Any information such as a schematic for this set would be be appreciated. Andy
::
::Hi Andy,
::If you post the tube line up, we may be able to identify the chassis.
::Carl
:~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:Looks like those might be universally filthy...
:Re:
:http://i2.ebayimg.com/05/i/08/fa/33/63_1.JPG
:
:can't tell if this one has had the canned filter ripped out of its chassis corner or if it uses units downstairs.
:Also, to its advantage, is its speaker a bit larger than the norm 4 inch pip-squeak in most units.
:73's de Edd

Thanks Carl and Edd for your responses:
The tube lineup is 12SA7gt,35Z5gt,50L6gt,12SK7 and 12SQ7. The photo online,Edd, shows a chassis a heck of a lot cleaner than mine was!! My set has the corner hole there also but on checking the underside nothing appears to have removed such as a canned filter so possibly Emerson used the chassis from another model. Also mine has a 5" speaker and it appears as if everything is original on this set.
The dial glass and the decal on the center bottom of the set reads "Emerson Radio & Phonograph"
Andy
:

2/5/2007 5:59:23 PMEdd
::::Hi everyone!
::::I purchased the above small table wooden radio, probably dating from the late late 30's, early 40's. There are no other identifiable marks on the chassis other than the above numbers on the back of the set. Now this had to be the most discusting and filthy looking chassis that I've ever come across with a rectifier tube laying loose inside the chassis and the plug had been cut off. Normally I don't do this, but I tested the rectifier tube, found it was bad and put in a new rectifier tube; put a plug on and plugged in the set through an isolation transformer and I couldn't believe the multitude of stations it picked up, all crisp and clear!! So now I've decided to take it all apart, clean it, raecap it, etc. and give it a new life. Any information such as a schematic for this set would be be appreciated. Andy
:::
:::Hi Andy,
:::If you post the tube line up, we may be able to identify the chassis.
:::Carl
::~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
::Looks like those might be universally filthy...
::Re:
::http://i2.ebayimg.com/05/i/08/fa/33/63_1.JPG
::
::can't tell if this one has had the canned filter ripped out of its chassis corner or if it uses units downstairs.
::Also, to its advantage, is its speaker a bit larger than the norm 4 inch pip-squeak in most units.
::73's de Edd
:
:Thanks Carl and Edd for your responses:
:The tube lineup is 12SA7gt,35Z5gt,50L6gt,12SK7 and 12SQ7. The photo online,Edd, shows a chassis a heck of a lot cleaner than mine was!! My set has the corner hole there also but on checking the underside nothing appears to have removed such as a canned filter so possibly Emerson used the chassis from another model. Also mine has a 5" speaker and it appears as if everything is original on this set.
:The dial glass and the decal on the center bottom of the set reads "Emerson Radio & Phonograph"
:Andy
::
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

OOPSKIES...looks like I neglected to put on the chematic info ....which you have to further fine tune in on its research..since you have the set on hand to compare info with. I am NOT finding your BW series anywhere

Back in their first days of that AA-5 octal tube lineup they initially used the EC chassis and updated to the EC-1, EK, EK2, EM, EM1, EM2, EM3, EL and EP series of chassis variants. Its associated model numbers of sets that it was used in started at that EC-296 and went
almost up to the 500 number series. At about the 500 model series they shifted to a longer six digit chassis indicator numbering system.... akin to #12xxxx, e.g. Chassis 120033 A and B or 120100 A and B.

Since your model number is not any of the mentioned, check and see if your set is the same as any of the above on its CHASSIS number. True that you mentioned not seeing any long chassis identifiers….., but EC does not exactly take up much chassis real estate.

You might next eliminate ~1/2 of the possibilities by zeroing in on as to whether your unit is using the newest permanent magnet type of speaker or the older style with its field coil design.

This will have this sites Emerson possibilities for you:
http://www.nostalgiaair.org/Resources/131/T0000131.htm

More so, if you will check these site variants and confirm that there is a green photo logo set off to the right…and then click on either the model or chassis…there are several pictures for a like comparison of your cabinet.

http://www.radiomuseum.org/dsp_treffer.cfm?Page=6
http://www.radiomuseum.org/dsp_treffer.cfm?Page=7
http://www.radiomuseum.org/dsp_treffer.cfm?Page=8

Thassit for now..
73’s de Edd

1/6/2013 11:35:02 AMBert Webb
:::Hi everyone!
:::I purchased the above small table wooden radio, probably dating from the late late 30's, early 40's. There are no other identifiable marks on the chassis other than the above numbers on the back of the set. Now this had to be the most discusting and filthy looking chassis that I've ever come across with a rectifier tube laying loose inside the chassis and the plug had been cut off. Normally I don't do this, but I tested the rectifier tube, found it was bad and put in a new rectifier tube; put a plug on and plugged in the set through an isolation transformer and I couldn't believe the multitude of stations it picked up, all crisp and clear!! So now I've decided to take it all apart, clean it, raecap it, etc. and give it a new life. Any information such as a schematic for this set would be be appreciated. Andy
::
::Hi Andy,
::If you post the tube line up, we may be able to identify the chassis.
::Carl
:~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:Looks like those might be universally filthy...
:Re:
:http://i2.ebayimg.com/05/i/08/fa/33/63_1.JPG
:
:can't tell if this one has had the canned filter ripped out of its chassis corner or if it uses units downstairs.
:Also, to its advantage, is its speaker a bit larger than the norm 4 inch pip-squeak in most units.
:73's de Edd
:
1/6/2013 11:37:17 AMBert Webb
Hi
Were you able to find the schematic on the Emerson 7-BW-179-15 Radio

Bert

::::Hi everyone!
::::I purchased the above small table wooden radio, probably dating from the late late 30's, early 40's. There are no other identifiable marks on the chassis other than the above numbers on the back of the set. Now this had to be the most discusting and filthy looking chassis that I've ever come across with a rectifier tube laying loose inside the chassis and the plug had been cut off. Normally I don't do this, but I tested the rectifier tube, found it was bad and put in a new rectifier tube; put a plug on and plugged in the set through an isolation transformer and I couldn't believe the multitude of stations it picked up, all crisp and clear!! So now I've decided to take it all apart, clean it, raecap it, etc. and give it a new life. Any information such as a schematic for this set would be be appreciated. Andy
:::
:::Hi Andy,
:::If you post the tube line up, we may be able to identify the chassis.
:::Carl
::~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
::Looks like those might be universally filthy...
::Re:
::http://i2.ebayimg.com/05/i/08/fa/33/63_1.JPG
::
::can't tell if this one has had the canned filter ripped out of its chassis corner or if it uses units downstairs.
::Also, to its advantage, is its speaker a bit larger than the norm 4 inch pip-squeak in most units.
::73's de Edd
::
:

1/6/2013 2:18:30 PMCarl T
:Hi
:Were you able to find the schematic on the Emerson 7-BW-179-15 Radio
:
:Bert
Bert,
7BW-179 is not the model number, but is the p/n for the loop antenna.
Probably FP chassis using this schematic:
http://www.nostalgiaair.org/PagesByModel/104/M0005104.pdf
Carl T


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