Question about Cobra 25 WX-NW-ST 40-Channels Base CB Radio

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Radio reception I get good reception up close and long distance, but in between I cant get any reception. Anyone have any advice?

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What it sounds like to me is you have experienced what is called "skip". The CB radio becomes very crowded with people talking. Noticeably close range and also distant, like as in another state or even country. Skip is caused by sunspot activity. every 11 years sunspot activity increases to a peak in the cycle. When this happens solar flares can occur and also cause radio outages.Why because radio waves and solar flares are both electromagnetic waves.Except the solar flare is more powerful and knocks out the less powerful radio waves. (yes solar flares and even light are radio waves too). back to skip... The weirdness of it all when skip happens radio waves at long distances come is as a local station would, quite powerful, but soon will go away. It seems to start over in the eastern part of the US if you live in the Western part and rolls around down through the southern US and back over to Hawaii and Japan. All this will take all day. You can talk to anybody you can hear if the conditions are right and you have a good antenna setup. so you were hearing "skip". look into it and learn more about it. I have experience with "skip" the reason I know. As Don mentioned even mountains can inhibit the radio wave at this frequency. But CB is not line of sight. line of sight occurs when the frequency is much higher such as UHF. Cb has ground wave and sky waves as it leaves the antenna. The directions it goes depends on the antenna setup and design. If you have a beam antenna the radio wave is narrowed and can then become directional. A regular 1/4 wave antenna , vertical basically goes in all directions. The reason you can bounce off the ionosphere. In order for the CB radio wave to go long distance it has to hit the ionosphere and then reflect at an angle back down to the person on the other end. So sunspot activity messes with the gases in the ionosphere to allow this to happen. now here is also a bonus to the question,,,,, If you listen to an AM radio in the broadcast band 540 KHz to say 1705 KHz you notice it goes farther at night. why? here is why. during the day the ionosphere is lower to the Earth, the radio wave hits it and the angle after it hits is very small and it comes back to Earth not too far from where it started. Now when the sun goes down, the ionosphere raises, now the angle after the radio wave hits the ionosphere is much larger and presto.... longer distance at night.

Posted on Aug 26, 2012

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Cb radio is line of sight. If there is a hill in the way, or some other kind of structure it will block the radio waves.

But also, radio waves, will bounce of the ionosphere and come back down.

So whats probably happening is...

You hear people close because they are near. You can't hear some one some what far away because of hills or something, but you talk to people far away because the are within range of the radio waves bouncing back down to them

Posted on Sep 08, 2010

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1 Answer

Cant get weather on my motorola MH370CR



Setting the Weather Channel


Your should radio receives weather frequencies if you are close enough to a reporting station:
1. After turning weather reception on, press . The current
Turning Weather Channel Reception On and Off

1. To turn weather reception on, press and hold + (plus) for three
seconds.
2. To turn off, press + or turn the radio off and then back on.

Setting the Weather Channel

Your radio receives weather frequencies:
1. After turning weather reception on, press MENU . The current
channel flashes.
2. Press + or - to select the appropriate channel with good
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3. Press PTT to save the weather channel setting.

Here's a link to the MH user guide.

Best regards.

http://www.motorolasolutions.com/web/Business/Products/ConsumerTwo-WayRadios/Talkabout-MH230R-Two-Way-Radio/_Documents/MH230.pdf

Feb 02, 2014 | Motorola Radio Communications

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My cb radio has good reception but only for a short distance, why ?


Make sure your squelch is not on, keep it all the way to the left and the RF Gain must be all the way to the right...

May 21, 2010 | Cobra 29 LTD CB Radio

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18 miles max range but actual it can transmit and


The reason for this is due to various possible conditions. The first being obstacles in the operation range of the unit. IE> hills buildings trees ect. This can greatly reduce the actual distance the unit will work in. The 18mile max is probably a rating that would apply in the best opt. scenario. You would have to be on a flat terrain with no hills or valleys,no trees or buildings for the unit to reach the max distance. In dense areas of trees,buildings or uneven terrian you wont even come close to these distances. Second: any unit RF unit that is held in your hand or close to your body does cause the antenna to detune to various degrees the amount that it does depends on how well the unit has been designed. The more it detunes the less resonated frequence is recieved and amplified making for a weaker signal. In conclusion for the best long range reception be clear of as much surronding interference as possible and as high a possible above any elevated terrian

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Engine noise on am stations


this was common in the old days, if you realy want to listen to the am radio and you cant stand the static reving sound of your engin you may need resiter spark plugs and wires.

Aug 01, 2009 | 1998 Ford Mustang

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2004 Jetta Radio


check the antenna ground to the chassis of the car.

May 28, 2009 | 2004 Volkswagen Jetta

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Distance of reception


Oh yeah. The best radio to get reach that distance with no problem would be a 10 meter, such as a General Lee, Connex, Stryker, or Galaxy with a 2 digit model number. Those, with a good antenna set up properly, will reach out 10 miles real clear and up to 14 - 15 miles with some reception loss.

Regular cb radios, such as Cobra, Galaxy 3 digit model numbers, Uniden, etc will have a decent reception, but generally when used barefoot, will only transmit and recieve about 6 miles real clear and up to 9 or 10 miles with a decent amount of signal loss.

Now, you do not have to have a big, expensive antenna to get the distance you want, you can do it with just a cheaper fiberglass stick antenna like a Francis 4 1/2 foot. After I installed a Francis antenna and a General Lee on a tuck outfited the other day, I was able to talk to a man apx 14 miles from my location.

The main thing to look for when installing the antenna is that you have a good coax (braided center conducto and 95% braided sheilding), and that the antenna is not grounded out, just the bracket (this is what makes your ground plane). Make sure the nylon spacer (looks like a plastic washer with a lip on it) is place on top of the antenna mount, with the lip facing down through the hole. You can use a magnet mount antenna, but you will have much much better luck with a hard mounted antenna.

If you have more questions, or if you need me to send a picture showing the placement of the antenna and bracket parts, dont hesitate to email me. rollincbmoew@yahoo.com

Dean Pitts
Rollin CBs

Aug 28, 2008 | Cobra 29 WX NW ST 40-Channels Base CB...

3 Answers

Excessive static on AM stations. Waves in and out. Not so on car radio. Is there an antenna to eliminate this?


Turn on the radio and turn the AM/SW BAND switch to the AM position. MW appears in the display. Use the outer ‘fast’ tuning knob to find stations, fine tuning with the inner ‘slow’ knob
when needed.

• If there is interference from adjacent stations, place the BAND WIDTH control in the NARROW position. If there is no interference, leave it in the WIDE position.

• If there is excess background noise, turn on
the SW LPF switch, which may minimize the noise.

• If a station is so strong that audio distortion occurs, reduce the gain level with the AM/SW RF GAIN control knob by turning it counterclockwise.

• The telescopic antenna does not have to be extended for AM reception. The radio has an internal, directional, ferrite-bar antenna for AM reception.

• To optimize AM reception, swivel the radio until maximum signal strength is achieved.

All of that being said: It's very tough nowadays to receive AM in this 2008 electronic world. If your able install a longwire SW antenna outside, and have access to a good earth ground, you can boost the AM signals and beat the noise being generated all around you.

Jan 08, 2008 | Grundig S350 AM/FM/SW Radio

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