I recently purchased an 880H transceiver to monitor VHF/UHF fire and police frequencies. Ive been searching online and trying to find a way to maybe modify this radio to TX out of band into GMRS range. Out of the box the radio only transmits 144-148mhz, 430-450mhz but receives 118-173.995, 230-549.995, 810-823.990, 849-868.990, 894-999.990 MHz. Is there a way this could be done?