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Richard Clark wrote: On Sun, 24 Feb 2008 08:32:17 -0800, "George" wrote: Anybody have a source of information on LORAN - C antenna design? Googling hasn't turned up much at all. Hi George, Use a CB whip with matching. 73's Richard Clark, KB7QHC As Richard noted, MOST Loran C Antenna Systems, are comprised of a 108" CB Whip and an Active Antenna Preamp specifically designed for the 100 Khz Frequency and 100 Hz Bandwidth of Loran C Signals. Usually it doesn't take much except a good narrow Bandpass filter in front of a couple of Cascode JFets, to get a reasonable signal level for the Units receiver, and normally, Notch Filtering, is done at the Main Receiver and Controlled by the microcontroller that runs the receiver, for interfering Pulse Signals. -- Bruce in alaska add path after fast to reply |
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