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DGPS field strength measurements at a GWEN site [microform] / J. Randy Hoffman, John J. Lemmon, Ronald L. Ketchum (NTIA report ; 98-346)

DGPS field strength measurements at a GWEN site [microform] / J. Randy Hoffman, John J. Lemmon, Ronald L. Ketchum (NTIA report ; 98-346)
マイクロ図書
1998<YCA-C 60.10:98-346>
国立国会図書館
  • 著者標目...Lemmon, John J Ketchum, Ronald L United States. National Telec...

Field strength measurements of DGPS and FAA beacons in the 285- to 325-kHz band [microform] / J. Randy Hoffman, John J. Lemmon, Ronald L. Ketchum (NTIA report ; 97-337)

Field strength measurements of DGPS and FAA beacons in the 285- to 325-kHz band [microform] / J. Randy Hoffman, John J. Lemmon, Ronald L. Ketchum (NTIA report ; 97-337)
マイクロ図書
1997<YCA-C 60.10:97-337>
国立国会図書館
  • 著者標目...Lemmon, John J Ketchum, Ronald L United States. National Telec...

A digital simulation model for local multipoint and multichannel multipoint distribution services [microform] / Roger A. Dalke, George A. Hufford, Ronald L. Ketchum (NTIA report ; 97-340)

A digital simulation model for local multipoint and multichannel multipoint distribution services [microform] / Roger A. Dalke, George A. Hufford, Ronald L. Ketchum (NTIA report ; 97-340)
マイクロ図書
1997<YCA-C 60.10:97-340>
国立国会図書館
  • 著者標目...Allen) , 1927- Ketchum, Ronald L United States. National Telec...

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