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#1
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I'm looking for a schematic, or at least hookup information for the
Accu-Keyer. I have a populated board, but no data. Can't seem to find anything on the net. Little help... ? Thanks. Mike, N4PDY |
#2
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I'm looking for a schematic, or at least hookup information for the
Accu-Keyer. Mike- The original article was in QST magazine, written by WB4VVF from the Orlando, Florida, area. I understand he still lives in the area. According to the QRZ data base, WB4VVF JAMES M GARRETT 1141 KILLAWE TER CHULUOTA FL 32766 If you don't find what you're looking for, you might write Jim directly. I also have an AccuKeyer, but don't have any idea where the documentation is. As I recall, the original design was intended to key a vacuum tube transmitter with grid-block keying. It is supposed to work with the more modern solid state rigs as well, but sometimes the offset voltage of about 0.7 volts, is too much. I modified mine by removing the high voltage PNP keying transistor, and used the NPN transistor of the preceding stage to key my rig. I don't have any documentation handy, but I'd be willing to look into mine if you have specific questions. 73, Fred, K4DII |
#3
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I'm looking for a schematic, or at least hookup information for the
Accu-Keyer. Mike- The original article was in QST magazine, written by WB4VVF from the Orlando, Florida, area. I understand he still lives in the area. According to the QRZ data base, WB4VVF JAMES M GARRETT 1141 KILLAWE TER CHULUOTA FL 32766 If you don't find what you're looking for, you might write Jim directly. I also have an AccuKeyer, but don't have any idea where the documentation is. As I recall, the original design was intended to key a vacuum tube transmitter with grid-block keying. It is supposed to work with the more modern solid state rigs as well, but sometimes the offset voltage of about 0.7 volts, is too much. I modified mine by removing the high voltage PNP keying transistor, and used the NPN transistor of the preceding stage to key my rig. I don't have any documentation handy, but I'd be willing to look into mine if you have specific questions. 73, Fred, K4DII |
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