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old magnum 257 amber face 2030 swap

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1342

Active Member
Jul 23, 2008
189
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has anyone tried this ia have the old 257 and would like to swap erf2030s in her i did find a new schematic for the 2030 model and many parts are gone from the original mainly around the final section.any info would be great!
 

The origional 257 was a dual 1969 final set-up. I would go with two irf520 mosfets. Thats is if the 1969's are smoked, if the radio works fine I would leave it as is.
 

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