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No sound Brand new mini-magnum 10 meter radio, Cant get sound from speaker, or external speaker, ??? Had many radios tried all the normal stuff.

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  • owenfriend Feb 28, 2009

    speaker is not working on my hx 460 either

  • David V Duvall Sr
    David V Duvall Sr May 11, 2010

    What all have you done to the radio up to now???

  • Kevin May 11, 2010

    Does the radio have an RF gain knob?  If yes, turn it to the maximum position (fully clockwise).  



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SOURCE: peak and tune a mini magnum 30 10 meter radio

Have you measured reflective power? If it is 15 watts, then you have an antenna problem

Posted on Sep 16, 2009


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1 Answer

Have a Magnum 257HP 10 meter radio. While connected to a 50 ohm dummy load, and a power meter, noticed that the USB and LSB would not modulate when a voice input is placed into the microphone. Also, on...

You may have a radio where the AM limiter has been defeated which can cause all kinds of issues. I would first check the mic is wired right and does not have a problem, the radio should have output with a tone to it on sideband--wattage up to over 20 watts on SSB is normal.

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Just buying magnum s9 radio can it be used on 11 metre band or has it got to be modified for 26-27 cept channels as i think its just a 10 metre radio please advise many thanks.

The magnum S9 is factory set for the 10 Meter band but can be "tweaked" to get up into the 11 meter band...
check out this neat and easy mod:

Hope this helps!,ben

Jan 13, 2011 | Magnum S9 Base CB Radio

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Will the 257 work on 11 meters/cb40 channels?

The Magnum 257 is a 10-meter Amateur radio, but it can be easily modified to operate on the 11-meter CB radio band. The modification and use of this radio on the CB frequencies is, of course, illegal. To modify one of the newer blue-faced models (this will not work on the original yellow-face models), remove the speaker side cover and look for the CPU board in the front of the radio close to the mic connector. This board has four sets of pins and a jumper that fits on the pins. To convert/expand the radio, move the connector to the CON3 position. This will give you frequency coverage from 25.165 to 29.699 MHZ, and the CB frequencies will be on Band E of the radio. Again, this modification, and use of the radio on the CB frequencies, is illegal. This modification information is provided for shop/calibration and experimental use only.

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1 Answer

Cant recieve or output , I bought a new cable and antenna plus a swr meter.

With an antenna connected, volume set to 1/4 from minimum, squelch / RF squelch fully counter-clockwise (or minimum) - do you hear anything from the speaker? If not - plug an earphone / external speaker into the external speaker jack on the rear - any sound? If not, do you see the S/RF meter needle moving (not resting on 0 or 1)? If not - find a channel with activity on as indicated by the S/RF meter first.

Try with another antenna connected if possible, or transmit with another CB radio on the same channel nearby - and try again.

If you aren't able to receive sound (not just static) - or indicated signals on the S/RF meter, the radio *MAY* need to be professionally serviced. Make sure you get an estimate for the work before authorizing - otherwise you may be spending more on a repair than the radio is worth. It is not uncommon to have to pay a diagnostic fee - that most shop will put toward the repair if allowed to do the work.

Good luck!

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The sound on my galaxy 44 cuts in and out one guy said it was a loose wire on the speaker and fixed it but it still cuts in and out any suggestions ?

The repair may not have been done correctly, and may need to be done again.

You should try connecting a speaker to the External Speaker jack on the back of the radio to see if it is a problem with the internal speaker or not. If you have the room, use the external speaker - you can choose whichever type you like and not be stuck with what is usually a cheap, crappy sounding internal type.

Good luck!

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Wat power does this radio push

Generally All CB Radios will only push 4 watts. This is only if you have a SWR of 1:1

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Peak and tune a mini magnum 30 10 meter radio

You need schematics and a good peak reading watt meter. You can do damage if you don't have eqipment/knowledge.

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10 meter portable

There is no factory made 10 meter CB Radio made for US use. CB Radios use 11 meters, and the FCC doesn't allow the combination of 10 and 11 meter radios combines. Although, many people modify 10 meter radios to work on the 11 meter ( CB ) band, it's not legal. Good Luck
NC Electronic
Mills, Wyoming

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yeppers you have a common problem of the audio output IC being bad or a defective speaker. If there is an external speaker jack, try another speaker just to make sure. Good Luck

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