Question about Uniden GPSRD Radar Detector

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GPS Antenna I bought a Uniden GNS8400 GPS. I bought an external antenna with MMCX plug because I was told the socket on the GPS was MMCX. It is not. It looks like a minute RCA socket. Do you know the type of socket it is so I can get a plug? CheersPhil

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Re: GPS Antenna


the 8400 does list an antenna accessory but no socket type
there is also a speaker/headphone out socket
are u sure you are not confused

mmcx and larger mcx are common types

GSN 8400 manual here


Posted on Nov 21, 2007

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Recently installed... "comm error" with

need to make sure that the radar antenna is plugged into the correct port on the display unit. Also make sure that the plugs are FULLY inserted, the water tightness of the plug can make it feel that its fully inserted but it may not be. For more info contact Whistler at 800-531-0004.

Jun 09, 2011 | Whistler Cruisader Radar Detector

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Off and on


Radar detectors will not work behind heat reflective glass. Note this is different to heated glass found in Fords etc which are fine. The Heat reflective glass as found in most Renaults, Some Peugeots, Citroens etc will effect any gps device also as it inhibits the signal sent to the satellite. In this instance a Re-Ratiating or external antenna is required and can be fitted near the dotted area around the rear view mirror.

I'll also see if there is a manual available for this model and post it here.

Pleased don't forget to rate the solution.

Apr 22, 2008 | Beltronics Pro RX65 Radar Detector

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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. ...

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.
Follow the below steps to correct R2/Clicking (Not available on Pro-3450) with "R" Yellow LED flashing 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.
  • 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.

May 29, 2011 | Whistler 3300 Radar Detector

2 Answers


hey cool...jus call u the network operator...and tel him to provide gprs to u r mobile...and he will tel u to send msg to one number...then u r gps will activated...thats it!!!!

Jul 26, 2009 | Radar Detectors

1 Answer

I have a passport excort 8500 X50 that signals maximum Ka and X over and over.

Are you getting any Self Calibration or Service Required error messages? If not, then this means that the basic electronics are good and that the problem is within the antenna. If your X50 is in warranty then Escort will repair the antenna for free. If not, then there will be a service fee ($80). Yet I can all but guarantee you that after Escort fixes the antenna problem then you will never have this problem again.The service fee also includes fully testing and calibrating your X50, and updating its internal computer firmware code to their latest code. So the end result is that your X50 will perform just like a brand new one.

Jan 25, 2009 | Escort Passport 8500 X50 Radar Detector

1 Answer

Beeps and says service required

This message occurs if your V995 can't properly calibrate its internal circuitry for the antenna. As the message implies, you need to send in your V995 for factory service.

Jan 02, 2009 | Beltronics Vector 995 Radar Detector

4 Answers

Escort 8500 radar detector

Service Required means that your 8500 has repeatedly failed while attempting to calibrate its radar antenna. This can be fixed by Escort for free if your RD still is in warranty. There is a service fee if your RD is out of warranty, but at least Escort will fully test everything in addition to repairing your 8500, and they will upgrade your 8500's firmware to whatever their latest and greatest firmware is which may help to improve sensitivity, reduce false alerts, or to detect newer laser gun models.

Aug 05, 2008 | Escort Passport 8500 Radar Detector

1 Answer

Removing vehicle locator from my dodge caravan

An easier way is to get a gps jammer. They make nice ones for cheap. Check the import sites from china. They make a small unit that plugs into cig lighter socket, and is no bigger than your thumb.


Apr 15, 2008 | Radar Detectors

1 Answer

Tracking device ?

I do not know your level of experience, but here are a couple of types you could make.....
A lojack-type beacon, with a receiver that beeps louder as it nears the beacon.
A unit that calculates its position by either cell tower triangulation or by GPS satellite. The only issue with this unit is that you need a way to access the information it stores. Some units store the information so it can be accessed later, and some units send the information over the cellular network to the internet.
if you plan on installing this device in a vehicle, the best place to mount the gps antenna would be under the dashboard below the front windshield. GPS antennas can only see through plastic and glass... if there is any metal above it, you will see no satellites. The unit must be grounded to the chassis of the automobile, and it must be connected to a direct power source. To reduce strain on the car battery, this unit should have a standby mode while the car is off... this will necessitate a 3rd connection to the vehicle, which would be the ignition lead. This lead only shows power when the vehicle is started, so it is a good way to tell the unit to wake up from standby. Another way to wake the unit up from standby would be to send it a "text message" or sms, The text message would contain a command to wake up (the standby current could be exactly that of a cell phone), and the unit can send its latitude and longitude via text message. 
That's pretty much it.

Feb 22, 2008 | Radar Detectors

2 Answers

Whistler 3300

Did you look at Whistler's website for R1 error trouble shooting steps?

Nov 30, 2007 | Whistler 3300 Radar Detector

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