HAVE AN ATWATER KENT 42, WITH A BURNED OUT PRIMARY POWER SUPPLY RESISTOR. ITS A 28 OHM. I CHECKED ALL THESE DIFFIRENT RADIO SITES CANT SEEM TO FIND ONE. I DID FIND A 28.7 OHM 100 WATT RESISTOR IN A SUPPER DUPPER SIZE HEAT SINK FOT $7.00 PLUS SHIPPING. I THINK IT WILL WORK FINE BUT THE SIZE BOTHER ME. ANY RESPONSE IS WELCOME THAK YOU ROBERT W.

:HAVE AN ATWATER KENT 42, WITH A BURNED OUT PRIMARY POWER SUPPLY RESISTOR. ITS A 28 OHM. I CHECKED ALL THESE DIFFIRENT RADIO SITES CANT SEEM TO FIND ONE. I DID FIND A 28.7 OHM 100 WATT RESISTOR IN A SUPPER DUPPER SIZE HEAT SINK FOT $7.00 PLUS SHIPPING. I THINK IT WILL WORK FINE BUT THE SIZE BOTHER ME. ANY RESPONSE IS WELCOME THAK YOU ROBERT W.

Hi Robert,
You should read this thread before deciding which resistor to buy:
http://www.nostalgiaair.org/forums/Messages/815/M0048815.htm
It is a ballast resistor that changes value as it heats up.
Carl T

Hi Robert

This ballast resistor was used to hold voltage fairly steady over a ride range of inputs as Carl mentioned.

You can still use a modern wire wound resistor or wind your own. I would first find out why the resistor burned out. Was it from a shorted power transformer? If so might want to use a Model 40 power supply which is interchangeable but doesn't need this resistor. A resistor has to be used with a Model 42 supply as the transformer is made for 80-85 volt input.

The original resistor is wound on a ceramic core. You can remove this ceramic core and wind your own resistor with nichrome wire. I use wire from a wire recorder. If you use this wire wind two strands at a time in parallel. This looks better than adding a wire wound resistor.

Norm

::HAVE AN ATWATER KENT 42, WITH A BURNED OUT PRIMARY POWER SUPPLY RESISTOR. ITS A 28 OHM. I CHECKED ALL THESE DIFFIRENT RADIO SITES CANT SEEM TO FIND ONE. I DID FIND A 28.7 OHM 100 WATT RESISTOR IN A SUPPER DUPPER SIZE HEAT SINK FOT $7.00 PLUS SHIPPING. I THINK IT WILL WORK FINE BUT THE SIZE BOTHER ME. ANY RESPONSE IS WELCOME THAK YOU ROBERT W.
:
:Hi Robert,
:You should read this thread before deciding which resistor to buy:
:http://www.nostalgiaair.org/forums/Messages/815/M0048815.htm
:It is a ballast resistor that changes value as it heats up.
:Carl T

:Hi Robert
:
: This ballast resistor was used to hold voltage fairly steady over a ride range of inputs as Carl mentioned.
:
: You can still use a modern wire wound resistor or wind your own. I would first find out why the resistor burned out. Was it from a shorted power transformer? If so might want to use a Model 40 power supply which is interchangeable but doesn't need this resistor. A resistor has to be used with a Model 42 supply as the transformer is made for 80-85 volt input.
:
: The original resistor is wound on a ceramic core. You can remove this ceramic core and wind your own resistor with nichrome wire. I use wire from a wire recorder. If you use this wire wind two strands at a time in parallel. This looks better than adding a wire wound resistor.
:
:Norm
:
:
:
:::HAVE AN ATWATER KENT 42, WITH A BURNED OUT PRIMARY POWER SUPPLY RESISTOR. ITS A 28 OHM. I CHECKED ALL THESE DIFFIRENT RADIO SITES CANT SEEM TO FIND ONE. I DID FIND A 28.7 OHM 100 WATT RESISTOR IN A SUPPER DUPPER SIZE HEAT SINK FOT $7.00 PLUS SHIPPING. I THINK IT WILL WORK FINE BUT THE SIZE BOTHER ME. ANY RESPONSE IS WELCOME THAK YOU ROBERT W.
::
::Hi Robert,
::You should read this thread before deciding which resistor to buy:
::http://www.nostalgiaair.org/forums/Messages/815/M0048815.htm
::It is a ballast resistor that changes value as it heats up.
::Carl T ROBERT THANK YOU FOR INFO. THE TRANFORMER IS FINE. SOME RESISTORS WERE BURNED BUT WERE REPLACED BY SOME ONE ELSE.THE 28 OHM RESISTOR BURNED OUT THE CERAMIC HOLDER.IM GOING TO TRY AND MAKE ONE.

::Hi Robert
::
:: This ballast resistor was used to hold voltage fairly steady over a ride range of inputs as Carl mentioned.
::
:: You can still use a modern wire wound resistor or wind your own. I would first find out why the resistor burned out. Was it from a shorted power transformer? If so might want to use a Model 40 power supply which is interchangeable but doesn't need this resistor. A resistor has to be used with a Model 42 supply as the transformer is made for 80-85 volt input.
::
:: The original resistor is wound on a ceramic core. You can remove this ceramic core and wind your own resistor with nichrome wire. I use wire from a wire recorder. If you use this wire wind two strands at a time in parallel. This looks better than adding a wire wound resistor.
::
::Norm
::
::
::
::::HAVE AN ATWATER KENT 42, WITH A BURNED OUT PRIMARY POWER SUPPLY RESISTOR. ITS A 28 OHM. I CHECKED ALL THESE DIFFIRENT RADIO SITES CANT SEEM TO FIND ONE. I DID FIND A 28.7 OHM 100 WATT RESISTOR IN A SUPPER DUPPER SIZE HEAT SINK FOT $7.00 PLUS SHIPPING. I THINK IT WILL WORK FINE BUT THE SIZE BOTHER ME. ANY RESPONSE IS WELCOME THAK YOU ROBERT W.
:::
:::Hi Robert,
:::You should read this thread before deciding which resistor to buy:
:::http://www.nostalgiaair.org/forums/Messages/815/M0048815.htm
:::It is a ballast resistor that changes value as it heats up.
:::Carl T ROBERT THANK YOU FOR INFO. THE TRANFORMER IS FINE. SOME RESISTORS WERE BURNED BUT WERE REPLACED BY SOME ONE ELSE.THE 28 OHM RESISTOR BURNED OUT THE CERAMIC HOLDER.IM GOING TO TRY AND MAKE ONE. UNABLE TO MAKE A RESISTOR. USED THE HEAT SINK 28.7 OHM RESISTOR. WORKS FINE WITH CORRECT VOLTAGES.