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Old 10-06-2008, 07:44 PM
  #4  
MarineTechnician
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Join Date: Jul 2008
Location: Canada Eh?
Posts: 35
Default Re: RL70 radar problems

If the problem is environmental you'll see side lobes.

If the display shows a ring on every sweep, and not a sun, adjust the timing. You can adjust the ring so it almost completely goes away. Be careful that the adjustment does not cause short distance targets to get sucked into the centre.

If you turn the gain to 100% do you have lots of speckle? Does the screen completely fill in? If so the MIC and front end are ok. If not the MIC, or IF strip are bad.

Look at the total TX+standby hours. If the number approaches 5000 hrs then I'd suspect the maggy. If you have one on the shelf throw it in, or check the heater voltage in the scanner. if the problem doesn't go away then most likely it's the modulator strip.

Hope this helps
MT
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