Question about JRC 1500 MKII Radar
Follow these steps to get the optimal display on your JRC 1500:
SELECTING A RANGE
Press the J-DIAL until RANGE is highlighted in the upper right corner of the display. The range scale and range rings setting in use is shown in the upper left corner. Rotate the J-DIAL clockwise to increase the range and anti-clockwise to decrease it. The range rings are automatically set to correspond with this selection.
ADJUSTING RECEIVER SENSITIVITY
Press the J-DIAL until GAIN appears highlighted in the upper right corner of the display. Rotate the J-DIAL clockwise or counterclockwise, to vary the gain and thus control the strength of echo returns on the radar screen. An on-screen bar indicates the gain level selected. The proper setting is when the background noise is just visible on the screen. (i.e. a light speckled effect)
Press the J-DIAL until the TUNE appears highlighted at the upper right corner of the display. Rotate the J-DIAL clockwise or counterclockwise, to maximize the target echo. If there is no large, identifiable target (e.g. big ship or land) within range, select SEA CLUTTER and turn the control to maximum. Use these echoes from wave crests to adjust the tuning bar for fullest attainable deflection. This is best done with the range set to 3 nm or 6 nm. When the radar has warmed up, it may be necessary to make a further fine tune adjustment.
The RADAR 1500 MK2 has an automatic tuning feature. In this mode, the radar automatically tunes itself for best efficiency at all ranges.
Posted on Jul 31, 2009
Usually there is an option in the GPS programs which enables the users to mark the North direction at the top, search for it and try enabling/disabling the same.
Posted on Jul 29, 2009
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Posted on Jan 02, 2017
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