Question about Magnum 257 CB Radio

1 Answer

Magnum 257 thanx mechanic i only use ssb so do you think this info should do the trick? colin

Posted by on

  • kozzae Mar 14, 2008

    hi mechanic i bought the radio like this from ebay!!! was posted from UK 2 me in Australia so 2 much hassle 2 post back!!!
    i'll have a look for dry solders first before i do anything
    i'll let you know how i go, once again many thanx colin

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 204 Answers

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

Posted on Mar 11, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Tengo un magnum 257 y un micro dm 452 y necesito la combinacion para instalar el micro con el radio


tengo un magnum 257 y necesito la COMBINACION PARA INSTALARLE UN ROAD DEVIL RD104E.

Mar 17, 2014 | Magnum 257 CB Radio

1 Answer

Magnum 257 HP , no problem at all on AM or FM , modulation OK. SSB is distorted with low modulation , higher modulation seems to make it better but not consistantly . Used dummy load , BK CB tester w/2...


Nope, your not the only one. Poor power regulation internally and maybe check your antenna swr. Higher wattage with even 1.9:1 i have seen exports have issues.. and then the magnum with there alc mod (compressor) on the op amp..

Dec 18, 2010 | Magnum 257 CB Radio

1 Answer

Magnum 257HP ,Poor TX audio , tried several mics ,SSB ALC , Bias no effect . Did not align TX lower stages . AM , FM are perfect , all RF power outputs perfect , looks good on scope with generator but...


That mod that magnum does really ups the sensitivity. so much thats is too much. If that model has a switch for the compressor turn it off. It will help 100% and make it sound decent not twangy and over modulated. Just the design of these newer exports are not like the old ones.

Dec 14, 2010 | Magnum 257 CB Radio

1 Answer

The Magnum 80watt 257


go to cb tricks .com

Apr 20, 2010 | Magnum 257 CB Radio

3 Answers

Magnum 257 it will not transmit on lsb or usb it will on am and f


With SSB you have to put audio on the carrier you cant just key the microphone and expect it to output a signal unless you talk into the microphone at the same time this is how SSB works.
So if you talk and the meter starts to move then its ok, if you talk or whistle and nothing moves then the circuit on the SSB side of the unit is faulty.

Nov 26, 2008 | Magnum 257 CB Radio

1 Answer

Lost buttons/1 and 2FOR 257


Yes, if this is the Magnum 257, then contact the company at 1-877-624-6869
or e-mail them from their site,, https://www.rflimited.com/Site.asp?CID=2

Hope this helps you, let me know,,, Mechanic

Nov 02, 2008 | Magnum 257 CB Radio

1 Answer

257 af gain control


You might try calling the Company for parts,,1-877-624-6869
or e-mail them from their site https://www.rflimited.com/Site.asp?CID=2
Let me know how this helps you, sorry for the delay,, Mechanic

Jun 24, 2008 | Magnum 257 CB Radio

5 Answers

Magnum 257 No Audio Being Transmitted


Hello.I have a similar situation on a Magnum 257 HP operating on SSB (AM and FM works fine). If i Transmit it works fine, but when i release the Mic button (after TX), in the bottom side were the RX level should be, it appear somth like a signal level 3 to 5 (constant and continous), but i can't get any reception at all. Only if i turn the TX power level to MAXand i transmit, then it goes back to reception, but not every time. Somtime after TX i need to push the mic button 2-3 times to make it recive somthing, but this wors only if the power level is over 60-70% an i repeat, only on SSB.Can i get some help with this issue?

May 10, 2008 | Magnum 257 CB Radio

1 Answer

Magnum 257 off freq


Colin, here is all the tech info on alignments that your looking for,,,go here;
http://www.cbtricks.com/radios/rflimited/magnum_257/index.htm

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

Mar 09, 2008 | Magnum 257 CB Radio

Not finding what you are looking for?
CB Radios Logo

Related Topics:

201 people viewed this question

Ask a Question

Usually answered in minutes!

Top Magnum CB Radios Experts

AnyMHz.com
AnyMHz.com

Level 2 Expert

489 Answers

Iron
Iron

Level 3 Expert

3018 Answers

Michael Thomas
Michael Thomas

Level 3 Expert

3051 Answers

Are you a Magnum CB Radio Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...