Question about Connex Cx-366ce Night Runner 40ch Cb Radio, Very Loud

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1 mile range on cb

New mount, k40 plus antenna and wire

Posted by randy dodd on

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Rommel Cana

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  • Master
  • 5,807 Answers

Check cables and connectors.

• check antenna SWR,

A good SWR ranges from 1.2 to 1.5.

• check power output.

Posted on Aug 02, 2012

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One Wire

Dean Pitts

  • 126 Answers

SOURCE: SWR calibration waaay off the chart

You are using an inline swr meter to set your swr right, not looking at the meter on the radio? Here is the process to set swr on an antenna:

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.

Posted on Jan 23, 2008

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Goofguyster

Layne Johnson

  • 379 Answers

SOURCE: poor receive with my Connex 3300 HP radio

get a K-30 antenna ist magnetic if that dont work your speaker in the Cb is broken

Posted on Sep 14, 2009

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A k 40 magnetic antenna has high swr and wire and everything looks fine


The K40 is known to fail after that many years in service when moisture gets into the coil it causes it to change it resonance freq. and hence the higher SWR. Buy and new antenna and enjoy 10 years is way to long for an antenna to last.

Apr 05, 2014 | K40 CB Antenna K-30

Tip

Facts about Cb radio.


a Cb(Citizens Band) radio usually only broadcast on frequencies 26.965 to 27.405 megahertz. It is for mostly short range use 3 to 20 miles range. It comes with legal power of 4 watts. Ranges average about 5 miles. Don't expect big results off this little low-power Am transmitter. A basic 40 channel radio, Microphone, and "Magnet Mount" antenna plus 12 volt Dc 5A power supply will suffice. Place the Magnet mount on a metal file cabinet inside your house. hook up the Radio Shack 12 volt 3-5 Amp power supply to your 40 channel radio, Say Uniden pro510xl or Cobra 19 plus mini compact about $39 for these types. A $20 Radio Shack magnet mount. Turn on radio an talk. If you live in the city near lots of friends who have one too. You can talk on a private channel like Ch#40 and talk all night. The waves get quieter at night and extend farther into the Ionesphere;conditions are favorable 8pm to 12am. You should talk loudly within 5-7 miles easy. I like friends nearby; who live within 3 miles of me. Don't expect Long Distance with these radios. Unless you buy a big 1000 Watt Rf Linear an Tower 100 ft. with big Antennas costing $10,000. But remember the FCC will knock on your door and may give you 5 years $10,000 fines for anything of Linear amps 1000Watts. Just stick with basic tune and adjust,power mics(Cobra sells best). Talk with friends about fishing,hunting,gardens,tools,cars,women etc. Have Fun!!!

on Apr 02, 2011 | Cobra 29 LTD CB Radio

1 Answer

Replace lead wire on k40 antenna


the coax doesnt solder it screws in twist the replacement wire clockwise to secure it they have it ehow tech its a website because I had the same question

Aug 17, 2012 | K40 57.25 Base Load CB Antenna Kit with...

1 Answer

I just can't get any range. I drive a company truck so I do not want to modify the truck. It has a standard antenna and I nought the uniden 69 with the weather channel as well. I was thinking of buying the...


Hello cktmn,
Welcome to FixYa.
My name is John, and I will be assisting you with your issue today.
Yes, the K40 is a great antenna for that radio and it should come with the COAX on it.
It is a magnet mount and the best place to put it is on the top of the vehicle or the center of the trunk. You will be surprised as to how well it works.
I hope this was helpful to you and thanks for choosing FixYa today and in the future.
Your comments are always welcomed here.

John

Feb 24, 2011 | Uniden Bearcat Pro PC68XL 40-Channels Base...

1 Answer

My cb will transmit ok but my reception range is not very far and I have a K40 trucker antenna


location of the antenna is every thing.the other thing to check is you swr.If your swr is to high your reception will be poor

Feb 20, 2011 | Cobra 29 LTD CB Radio

2 Answers

Can't talk about 2 miles ,swr is good


If your talking at least 2 then it sounds like it is the antenna. Any antenna should talk 10-12 miles on a good day, no matter what radio you're using. So I'd get a second look at that system.

May 30, 2010 | Galaxy Radios DX-959 40-Channels Base CB...

1 Answer

I have a pickup with a fiberglass bed cover, inside is a Cobra 29. When the k40 antenna is on the bedcover (magnetic mount w/ 6x6 inch metal plate glued to the bedcover) radio will give me an antenna...


Well, the k40 is designed for roof or trunk mount,you would not be getting a good ground,plus you would be getting feed back from cab,no good transmit or receive. Get a good 102" fiberglass or steel whip that's bumper mount,mount it on right rear bumper and you will be good to go.

Mar 28, 2010 | Radio Communications

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