Question about Magnum 257 CB Radio

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Magnum 257 off freq

Hi can you help i own a magnum 257 and the radio tx's about 1kc
off centre freq i would love to bring it back to centre freq
i have most of the test equipment and all the right tools for the job
just need to know where to start???
thanx colin

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Colin, here is all the tech info on alignments that your looking for,,,go here;

Hope this gets you on the right track,, let us know.

Posted on Mar 10, 2008


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To tune frequencies in either 10 kHz or 100 kHz increments,
press the STEP button until the desired digit is
flashing. Rotate the FREQUENCY control in either direction.
The entire frequency range of the Magnum 257
can be stepped through in 10 or 100 kHz increments.
To tune in 1 kHz increments, press the STEP button
until the 1 kHz digit flashes on and off. Rotate the FREQUENCY
control. NOTE: When stepping in 1 kHz increments,
you are limited to tuning within a 10 kHz
frequency range.

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1 Answer

Magnum 257

Yes, there is info there to do a complete alignment for the transmitter or receiver. I do have to wonder what caused the radio to develop the problem; like did it slide off freq all of a sudden, maybe was bought used with the problem in there? Or someone with that dreaded "golden" screwdriver? lol If the radio has a bad solder joint causing it to slide off freq, then just putting it back with the adjustment is just a band aid approach. Need to figure out what caused the problem, and go after that. I hope this sheds a little more light,, have a good one. Mechanic

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