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Nexxtech mobile magnetic CB radio Antenna 2100972

I recently purchased the subject but before I attach it to my vehicle I would like to know if I will have problem removing same when I have completed using the unit. Will it come off without causing scratches, paint removal, etc. or do I have to leave it attached for all time? I would sure be pleased to receive some help on this matter.

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CB radio magnet mount antennas have a protective film on the bottom to protect vehicle paint. If it is not there, it can and most likely will scratch the paint. Just be careful not to slide the magnet when you do remove it. Try to remove it stright upwards.

Rollin CBs

Posted on Jan 27, 2008


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Posted on Jan 02, 2017


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When i que my mic the display light shows no antenna light unless im touching the antenna i tried this on 2 different trucks

The mounting and adjusting of the antenna is crucial,if it is a magnet mount,the surface must be clean,dry and best to not have any rust,also bottom of the magnet needs to be clean and mount it to the largest area of metal on the vehicle...the trunk lid,middle of your roof are the best.Permanent mounts need to be touching bare metal at the mounting hole not paint,again either mount requires SWR adjustments to match the radio it's attached to,it may require trimming of the metal"whip" if it needs to be lowered for the best reading,also don't rule out the radio chassis might need to be grounded as well.For general safety I would not recommend touching an antenna while it is transmitting any radio signal...if all above is good,you transmit and receive fine,more likely light is faulty or needs it's sensitivity adjusted...Good luck,hope this info helps.

Sep 03, 2011 | Cobra 29 LTD CB Radio

1 Answer

When explaining that an antenna needs to be 'gounded', does this mean that the bracket the antenna is attatched to needs to be actually hard wired to the vehicle frame or when using a magnetic mount...

Hi, my name is John. Welcome to FixYa. Yes, That is not sufficient enough for your antenna. Need any further information let me know. Thanks for choosing FixYa...John

Nov 23, 2010 | Cobra 29 LTD CB Radio

1 Answer

I just purchased two radios. How far will they transmit and receive with good clarity in the city? I need to transmit and receive from about six to eight miles away clearly. Thanks.


Typically and unmodified handheld CB will have a decent talk distance of 1-2 miles with both being a handheld. Further distances can be had if one of the radios was a mobile or base station with distances of more than five miles with weak signals. In some cases the antenna can be changed to a better longer antenna. Extention type antennas typically transmit about a mile per watt. Conditions such as terrain will have an impact on signal specifically mountains or buildings. Better results may also be had by purchasing a mobile magnet mount with a PL-259 to BNC to fit the radio. A magnet mount placed on a air conditioning unit or large cookiesheet as high as possible will make decent gains for distance if the radios are intended to be stationary.

JT Radiojunkie

Jun 21, 2010 | Midland 75-785 Handheld CB Radio

2 Answers

On my 77-099 Cb MIDLAND Radio I wonder can i use a antanna that is used for vehicle can be made for a home base radio place.I BOUGHT A MIDLAND CB RADIO AND MADE IN TO A HOME BASE RADIO THAT IS MADE FOR...

Generally this is not a good idea. The antennas that are designed for use with a car, use the body of the car as a ground plane. If you try to use this in a house (or even outside the house), it's not going to work.

Your only chance at even getting such a setup to work would be to attach the antenna to a LARGE flat piece of metal, approximately the size of a car, which is then grounded with a long metal rod into the earth.

I'd really suggest looking into buying a proper home CB antenna, which would then need to be mounted somehow to the roof of the house (or as high up as possible.) If this is not a feasible option, you should do a Google search for "CB Dipole Antenna", and get instructions on how to build and tune your own antenna. Dipoles are not overly difficult to construct, and perform quite well.

Nov 08, 2009 | Midland 77-099 CB Radio

3 Answers

How do i install a cb radio on a pick up truck

You will need a CB radio antenna, The CB radio and mounting hardware as well as the power wire.

Choose a place to mount the radio. Mount it. Run the power wires from the radio to the fuse box. Put red wire in with the fuse that is hooked to switched 12 volt. Ground the black wire to any metal of the vehicle.

Next find a place to mount the antenna. If you use a mag mount, the roof of the cab is a best bet. Run the wire into the vehicle, it can go through the door, just make sure its not going to get pinched.

Hook the coax from the antenna to the radio

Now you have to tune the antenna. this is important because if you don't you you will blow the transmit final transistor out in the radio.

This link will take you to an article that will explain how to tune your antenna.

Nov 04, 2009 | Cobra 25 LTD 40-Channels Base CB Radio

3 Answers

Connex 4600 turbo export radio


On most mobile communications equipment, it is best that:
1. the power leads are directly wired to the battery terminals;
2. the bracket and radio body are grounded to the chassis of the vehicle;
3. a braided grounding strip be used in addition to the negative power lead; and/or
4. a gutter or trunk lip mounted antenna be used rather than magnetic. Antennas are better made of metal rod (not fiberglass) such as those made by Daiwa, Maldol, Oscar, Hokushin and others. The mount itself should use high quality RG58 coaxial cable such as those by Belden and others.

Hope that this be of some help/idea. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

Dec 31, 2007 | Magnum 257 CB Radio

1 Answer

RED TX and ANT light, Cobra 29


Your post of 2 lights; 1 is to indicate that you are transmitting when keying the mic is normal. The 2nd indicating an antenna warning (or SWR) should be corrected. You are right in starting with the coaxial cable which of course would include the PL259 connector. Verify that there are no breaks, over-bended loop, exposed ground/shield and that the solder of the center wire as well as the braided shield/ground is in order.

If it is a mobile setup, further verify that the antenna mount (except when magnetic) is properly grounded to the body of the vehicle and free from rust/corrosion. In some instances, it is the antenna itself that need checking or even possibly replacement.

Alternately, if the needle doesn't swing to the right side of the meter when the mic is keyed, it is possible that your finals (2SC1306) needs replacement.

Hope this be of some help/idea. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

Dec 06, 2007 | Cobra 29 WX NW ST 40-Channels Base CB...

3 Answers


Checking and setting the swr can only be accomplished with an inline swr meter, not with the radios swr cal switch and the radios meter. Once you have set the swr of the antenna, you cal the radios meter to reflect the actual swr reading and use it like a dummy light on a car, just as an indicator of high swrs. To set your swr:

You must have an inline swr meter, which can be purchased online or from a truck stop. The ones at truck stops are cheap ones, but will do the trick for the most part.

You connect your antenna 18ft coax to the antenna plug of the swr meter, and a jumper coax (any length) to the transmitter plug of the swr meter and then to the radio.

Close all doors and make sure no one is messing around with the vehicle or antenna. You must be set up as you would normally be transmitting.

Now set your cb radio to channel 40 and your swr meter to fwd. Key up your microphone1.gif and at the same time turn the set knob on the swr meter until the needle is at the line that reads set. Unkey your mic and set the the swr meter to ref. Key up again and note what your reading is. Now leave the swr meter in ref and turn the cb to channel 1. Key up and take your reading. If the reading on ch 1 is higher than ch 40 you must raise the stinger on your antenna. If ch 1 is lower than 40, you lower your stinger. You are trying to get lower than a reading of 3 and as close to 1.5 as possible. If you lower your stinger as far into the antenna as it will go and you need it shorter, you cut the bottom of your stinger no more than 1/2" at a time, and recheck your swr reading after each cut.

Once you have gotten the best reading you can, connect your antenna directly back to the radio.

The setting of your swrs is to make your antenna as efficient as possible, by trying to get it as close as you can to a 50ohm impedance. THE ONLY PART OF YOUR SYSTEM THAT CAN CHANGE YOUR SWR IS YOUR ANTENNA, not your coax and not your radio. Your radio and coax can give you false readings, but only the antenna can actually change the swr.

On the swr meter, the fwd/ref switch stands for forward (power that is being transmitted out) and reflected (power that is reflected back into the radio.

Just for information sake, the swr cal switch on your radio is used to set the meter to reflect the swr that your antenna is set at. The meter on your radio is like a dummy light on your car. ONCE AGAIN, YOU CAN NOT SET YOUR SWR ON YOUR RADIO, only the antenna.

Rollin CBs
Mt. Vernon, TX

Aug 23, 2007 | Cobra 29 LTD CB Radio

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