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Cobra 25 NW WX ST volume question

Discussion in 'General CB Services Discussion' started by Hurricane145, Aug 13, 2018 at 1:10 AM.

  1. Hurricane145

    Hurricane145 Active Member

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    I picked up a Cobra 25 NW WX ST cheap and it all works except the nightwatch feature which is no real surprise.
    One thing I notice that seems odd is that even with the volume down all the way it still has a fair amount of volume. When listening to a weather channel it is normal and a strong weather station can be turned down so that there is no audio. I was just wondering if others with this radio have had similar experiences with the volume being rather high at it's lowest setting.
    It also doesn't seem to do very well here in the house with noise. It seems a lot noisier than a Road Talker 40 (slant face ssb) or a Cobra 138 XLR. The noise blanker does make a small difference but not all that much.
    Maybe it is just the way it is with a smaller less expensive radio.
    Any thoughts?


     

  2. Low_Boy

    Low_Boy Well-Known Member

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    I have a couple cobra 25s and they always seemed loud. Even after a receive kit and receive tune
     
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  3. sonoma

    sonoma Sr. Member

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  4. 9C1Driver

    9C1Driver Sr. Member

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    One of the many reasons these radio's were called Sound Crappers.
     
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  5. Hurricane145

    Hurricane145 Active Member

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    Thanks for the service bulletin. I'll give it a go and see if it helps. Probably just disable the weather alarm. I am not likely to need the alarm anyway.
     
  6. Hurricane145

    Hurricane145 Active Member

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    I took out the jumper for the weather alarm and the volume is normal now.

    Still not sure about the noise level being so high compared to other radios I have. I will wait until I can get it in my truck and see how it goes in there but I don't expect much difference. Noise blanker doesn't seem to make any difference on or off. It may have a problem in it's circuitry.
     
  7. sunbulls

    sunbulls Well-Known Member

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    Love Cobra's technical bulletin and schematic site. I wish Uniden and a few others would do the same.
     
  8. sunbulls

    sunbulls Well-Known Member

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    If you can get your hands on one, a crude but effective device for checking a Noise Blanker is a Seat Belt alarm buzzer that a lot of cars used in the mid 70’s. Those things put out some real nasty spikes that could be heard in a radio placed at a considerable distance. Since Seat Belt use was not the law back then, most of those annoying buzzers were ripped out.
     

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