I could do that...but then...
Welcome to the forum.
BTW - say 'Hi' to cousin Wadsie for me...
The new Magnum 257 HP has a different board for frequency conversion from earlier versions of this same model. They used to have a jumper that had only two positions that you could use. It came from the factory with the default setting allowing for 10m use with repeater functions. The second jumper position/setting expands frequencies from 25.165mhz to 29.699mhz. In the latter setting, repeater offset functions are disabled.
The NEW model has the same jumper/freq conversion board that the Magnum OmegaForce S-45 has.
There are now four different jumper positions possible now for the 257.
CON 1:
10 Meter Only (28.000 - 29.699 MHz)
*Default mode
*All functions operate normally
CON 2:
10 Meter & Expanded Mode
*At turn on, the radio defaults to 10 Meter mode.
*For Expanded mode, press FUNC and then press CALL for 3 seconds.
*To return to 10 Meter mode, repeat above steps.
(For information on Expanded mode operation, see CON 3)
Also known as 'stealth mode'
CON 3:
Expanded Mode Only (25.165 - 29.699 MHz)
*In Expanded mode, the frequency range is divided into 10 bands of 40 channels each
Bands are shown on LCD display by letters (A through J) - Band E is regular 40 channel CB. To switch bands, press the CALL button (do not hold down for 3 seconds),
*In Expanded mode, either the frequency or channel can be displayed on the LCD. To switch between frequency display and channel display, press the FUNC button and then press the CALL button (do not hold down for 3 seconds).
*On the channel display, the small number (0 - 9) to the right of the Band letter is the 1 kHz frequency display. Example: If the frequency is 27.405, then the channel display will indicate 40 E5. "40" being the channel, "E" being the Band, and "5" being the 1 kHz position of 27.405.
*In Expanded mode, the RPT and SHIFT functions do not operate
CON 4:
40 Channel CB Only (26.965 - 27.405 MHz)
*Only operates on the regular 40 CB channels
Source:
Magnum Omegaforce S45 Service Manual
But now that I've told ya; I'll have to kill ya...