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Every time i key the mic up it says attena failure

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Where do you have it mounted? you may have to provide a ground for it .Maybe its your antenna , get a better one , like a wilson or one of them K-40's . could be the radio itself.Take it to a tech ,on the vehicle you intend to use it on and have them check it out.

Posted on Nov 04, 2013

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SOURCE: ******** attack i keyed the mic with no attena

bye bye final....

Posted on Oct 21, 2009

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1 Answer

My 2004 Chevy Trailblazer CD play and AM radio works. My FM quit working?


Have you pulled the radio all the way out and make sure the attena is plugged in the unit itself. I would first make sure the new attena's wire is the same exact wire going directly to the stereo unit. Insufficiant grounding of the unit can also cause a weaker signal it will receive b/c it relies on it more as a ground rather than a clear signal receiver and alot of interference and static is transisted instead.

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Have a 99v was talking one nite talking great turn it off then back on no modulation check and change mics.still no mod.what should i look for ?


Check the mic gain.
Make sure it is not in PA mode.
Make sure the mic jack in the radio doesn't have a broke or loose wire.

Those are a few things I can think of based on the information given. More information is needed if these will no solve the problem.

Does it turn on?
Does it key up?
If it keys up is there carrier?
How many watts is the carrier?
Are there any mods done to the radio?
Does it have a roger beep installed? What kind?
Does it have an echo board install? What kind?
Did you do the mod or some one else?
What is your SWR?
Is the display flashing when you key it?
Are the displays lit at all?
Did you disconnect the power cord after you turned it off, and reconnect it?
What channel are you keying up on.
Was/is the case off the radio when you tried it or were you working on it at the time of the failure?
What mics have you tried.
are you using talk back?
did you some one on another radio tell you they do not hear you, or are you going by no swing on the meter in the radio?
Could the meter be bad?

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1 Answer

My mic has stopped working


Use a multimeter to check for the continuity of the mic. Or you can connect another set for confirmation of the source, In such case look carefully for any wire breaks or failure near to the mic connection, you will hav to look with a lens/ or disect the micconnection.Hope this helps. Good Day

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Please show me n70 board and give solution of signal problem.


HI DEAR
FOR SIGNAL PROBLEM CHECK ATTENA IS CORRECT OR NOT IF NO THEN REPLACE IT AND IF YES THE RMOVE ATTENA SWITCH AND MAKE JUMPER ACCORDINGLY

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1 Answer

I have no sound, even when I key mic. The meter goes up one time and not the next.


This could one or more of the following problems. I'll start with the ones I feel are most likely the cause, but you can check them in which ever order you like.

When the mic is keyed, you should not hear anything from the reciever. The mic's PTT (push to talk) button switches the transciever from recieve mode to transmit mode, if it didn't all you would hear and transmit would be screaching feedback. Also, during the transmit mode, the radio's meter should switch from indicating relative signal strength (or "S" units) to power out where 4 watts AM should indicate full scale deflection of the meter.

This makes me believe that you've got a intermittent connection in the mic circuit. This can be anywhere from inside the mic, mic cord, mic connector and inside the radio - from the mic jack. The cord is supect as it is always being twisted, pulled, stretched and strained under extremes of temperatures and humidity.

You can check the cord by simply replacing it or with a dummy load connected to the antenna, see if keying the mic and shaking the cable makes the power meter jump or bounce. Twist and pull the cord over its entire length - but pay particular attention to the strain relief points near the mic body and connector as these are typical points of failure.

Check contacts inside the mic, between the mic cord and plug, mic plug and mic jack on the radio to be sure there is no oxidation or broken / shorted wires.

There may also be a problem with a blow speaker, which would explain the lack of audio on the reciever. Connect an external speaker to the external speaker jack (if provided) or open the radio to connect a speaker to the one under test.

Least likely - but still possible is a fault with the antenna coax cable, antenna and / or mount. Look for split, crushed, or otherwise damaged cable along the entire length. Pay attention to pinch points, etc. Repair or replace as needed. Look for oxidation build up between the antenna and mounting threads - clean as best you can or replace. Check the coil (if any) on the antenna. Broken, burnt, etc.insulators over coils are indicators of a problems. Again, repair or replace as needed.

I hope this helps you identify the source of the problem - good luck!

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find attena and point it to your door if this does not work try adding a piece of wire to attena and making it longer also always check batts...

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check attena connections if these are ok try retuning tele

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