02-27-2016, 05:27 PM
1. 1000 feet of #40 gauge enameled copper wire will be needed to rewind the coil in the Shadow Meter assembly. It just so happens that #40 gauge wire has a resistance of about 1.1 ohms per foot. So in a typical radio, a current draw of 10ma. will give the 10 volt drop across the coil that it takes to operate the shadow vane correctly.
The above is a quote from the philco service hint & tips
Charlie if your getting 1000 ohm reading you should be good to go. The 9v test to see if the vane is deflecting as Mark said, is a good idea to make sure it is not stuck.
The above is a quote from the philco service hint & tips
Charlie if your getting 1000 ohm reading you should be good to go. The 9v test to see if the vane is deflecting as Mark said, is a good idea to make sure it is not stuck.
