To address the radio coverage gap, between the marathon starting line in Hopkinton and finish line in Boston, the ICRI will bridge VHF and UHF mobile radios (Motorola XTL series mobile to XPR 4000 series mobile radios)
Read More: https://www.c-at.com/blog/c-at-supports-boston-marathon-with-vhf-uhf-radio-bridge-repeater/