I have a rather old Whistler 3300 radar detector with the antannae unit in front of the radiator and the suction cup unit on the front windshield for rear detection. I've had it forever and love it. I got an "R1 Error" message and am not sure what to do to make the correction. I do not have the manual to research the problem myself....can you help?

Here are the steps from Whistler's FAQ page on their website:

When the display shows an "R1" type error on the display or the unit clicks (flashing either the Green power LED or the Yellow city LED), it means that the link between the inside and outside unit has failed. Generally this is caused by the receiver's (outside unit) cable becoming unplugged from behind the console (inside unit).
NOTE: The receiver cable is the straight one plugged into the "Radar 1" jack. The laser receiver (LRM-5) cable is angled and plugged into the "Laser" jack. This error will also occur if these two cables are reversed.

Follow the below steps to correct R1/Clicking error message:

• Make sure the correct cable is connected to the correct jack and that it is fully engaged.
  Make sure there is sufficient slack in the cables to prevent them from "walking out" of the jacks.
• Follow the Factory Reset procedure.
• If the above suggestions does not cure the problem, email our Customer Service dept for more information.

• Make sure the correct cable is connected to the correct jack and that it is fully engaged.
  Make sure there is sufficient slack in the cables to prevent them from "walking out" of the jacks.
• If the rear antenna was not installed, go to the Factory Reset procedure. If a rear antenna was installed, continue to the next step.
• If the rear antenna is installed, it must be programmed.
  
  For models 2270 and 2290
  1. Remove power from unit
  2. Press and hold the Dark button
  3. While holding the dark button, apply power to unit and hold the Dark button for 5 seconds. The "R"LED and either the Green (highway) or Yellow (City) will illuminate.
  
  For model 3300 and 3400
  1. Unit will display "R2 ON ?"
  2. Press the Dark button for Yes or City for No.
• To temporarily cancel the "R2"error message on a 3300 or 3400 model, press and hold either the Dark/City/Quiet button.
• Follow the Factory Reset procedure and see if the "R2" error goes away. If so, go to next step.
• If the above suggestions does not cure the problem, email our Customer Service dept for more information.