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Magnum 257 blue screen and MOSFET
- Thread starter muppet62
- Start date
CON1: ~ 10 Meter Only (28.000 - 29.699 MHz)
*Default mode
*All functions operate normally
CON2: ~ 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 CON3
CON3: ~ Expanded Mode Only (25.165 - 29.699 MHz)
In the Expanded mode, the frequency range is divided into 10 Bands of 40 Channels each.
The 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 the Expanded mode, either the frequency or channel can be displayed on the LCD. To switch between freqency 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.
Note!
In the Expanded mode, the RPT and SHIFT functions Will Not Operate.
CON4: ~ 40 Channel CB Only (26.965 - 27.405 MHz) (Only operates on the regular 40 CB channels.)
Step #5 After selecting the desired frequency range and configuration, press the CPU Reset Switch (SW1) for 5 - 10 seconds.
Step #6 Reassemble the radio, turn on and test.
read: 'Note! In the Expanded mode, the RPT and SHIFT functions Will Not Operate.' under condition 3, which may be how your radio is modded-unless you're in expanded mode of condition 2.....got that? you want condition 2 so you can switch back and forth between expanded mode' for cb & 10 meter only mode for RPT & SHIFT functions.
*Default mode
*All functions operate normally
CON2: ~ 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 CON3
CON3: ~ Expanded Mode Only (25.165 - 29.699 MHz)
In the Expanded mode, the frequency range is divided into 10 Bands of 40 Channels each.
The 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 the Expanded mode, either the frequency or channel can be displayed on the LCD. To switch between freqency 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.
Note!
In the Expanded mode, the RPT and SHIFT functions Will Not Operate.
CON4: ~ 40 Channel CB Only (26.965 - 27.405 MHz) (Only operates on the regular 40 CB channels.)
Step #5 After selecting the desired frequency range and configuration, press the CPU Reset Switch (SW1) for 5 - 10 seconds.
Step #6 Reassemble the radio, turn on and test.
read: 'Note! In the Expanded mode, the RPT and SHIFT functions Will Not Operate.' under condition 3, which may be how your radio is modded-unless you're in expanded mode of condition 2.....got that? you want condition 2 so you can switch back and forth between expanded mode' for cb & 10 meter only mode for RPT & SHIFT functions.
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