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#1
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Hello all,
My girlfriend's father was a correspondent for the Voice of America for many years, and before he died a few years ago he gave her a Westinghouse Model RF43W070 portable radio that he had taken with him on his assignments to Africa and Asia. The radio is in pretty much like-new condition, with the exception that the AC adaptor has been lost. There is a jack for a "9V adaptor" on one side, but I have no other details about the sort of adaptor this would need. She would like to listen to the radio more, perhaps more for old-times sake than any other reason, but she would prefer not to have to run it off batteries all the time. Does anyone know where I can find an AC adaptor that will work with this radio? I'd love to surprise her with one if possible. Any information would be much appreciated. Thanks in advance, --Larry |
#2
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the critical thing is to get the polarity right on the adaptor. so one
fine day when you're over there with a small DVM in your pocket, and she skips up to the can or out to weed the garden or something, slip the back off. fire up the meter, put one probe on the outside conductor of the adaptor, and touch the other one to both of the battery leads, each in turn. one will give you voltage if you are not watching the interrupted lead on the adaptor jack... if you don't get voltage either way, you need to look more closely at the adaptor and find the outside lead before it is interrupted. once you get a reading, note the polarity (useful if you use the red lead to chase the adaptor jack so you and the meter are both clear about where you are seeing things.) if polarity at the red lead is positive, then the center has to be negative. if you see -8.56 volts or similar, the center has to be positive. find an adaptor and plug at radio shack that fits, fit the magic plug the right way to put the polarity the right way, and you are in like Flynn. get it backwards... well, depending on how they made the radio, if there is not a diode that shorts the adaptor plug if you hook it up backwards, ugly can happen. wrote: Hello all, My girlfriend's father was a correspondent for the Voice of America for many years, and before he died a few years ago he gave her a Westinghouse Model RF43W070 portable radio that he had taken with him on his assignments to Africa and Asia. The radio is in pretty much like-new condition, with the exception that the AC adaptor has been lost. There is a jack for a "9V adaptor" on one side, but I have no other details about the sort of adaptor this would need. She would like to listen to the radio more, perhaps more for old-times sake than any other reason, but she would prefer not to have to run it off batteries all the time. Does anyone know where I can find an AC adaptor that will work with this radio? I'd love to surprise her with one if possible. Any information would be much appreciated. Thanks in advance, --Larry -- If it's a "new economy," why do they want my obsolete old money? |
#3
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the critical thing is to get the polarity right on the adaptor. so one
fine day when you're over there with a small DVM in your pocket, and she skips up to the can or out to weed the garden or something, slip the back off. fire up the meter, put one probe on the outside conductor of the adaptor, and touch the other one to both of the battery leads, each in turn. one will give you voltage if you are not watching the interrupted lead on the adaptor jack... if you don't get voltage either way, you need to look more closely at the adaptor and find the outside lead before it is interrupted. once you get a reading, note the polarity (useful if you use the red lead to chase the adaptor jack so you and the meter are both clear about where you are seeing things.) if polarity at the red lead is positive, then the center has to be negative. if you see -8.56 volts or similar, the center has to be positive. find an adaptor and plug at radio shack that fits, fit the magic plug the right way to put the polarity the right way, and you are in like Flynn. get it backwards... well, depending on how they made the radio, if there is not a diode that shorts the adaptor plug if you hook it up backwards, ugly can happen. wrote: Hello all, My girlfriend's father was a correspondent for the Voice of America for many years, and before he died a few years ago he gave her a Westinghouse Model RF43W070 portable radio that he had taken with him on his assignments to Africa and Asia. The radio is in pretty much like-new condition, with the exception that the AC adaptor has been lost. There is a jack for a "9V adaptor" on one side, but I have no other details about the sort of adaptor this would need. She would like to listen to the radio more, perhaps more for old-times sake than any other reason, but she would prefer not to have to run it off batteries all the time. Does anyone know where I can find an AC adaptor that will work with this radio? I'd love to surprise her with one if possible. Any information would be much appreciated. Thanks in advance, --Larry -- If it's a "new economy," why do they want my obsolete old money? |
#4
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