| Midland 77-290 and 79-290 |
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| Channel Modification
Press and hold "DW" and "9" then turn radio on. Select bands by using the "CH99" button. To set for 28Mhz to 29.7 Mhz press and hold "LCR" and "MIC" then turn radio on. To switch back to 40 channel mode repeat process. Modulation Boost Replace R138 with a 270ohm resistor. VR1 S-Meter VR4 FM Modulation VR5 AM Power VR6 SSB Power VR7 RF Power-Meter VR9 Final Bias VR11 Driver Bias VR12 FM Power |
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