A method of determining a phase of a source clock for a wireless communication channel in a multi-hop network, the method comprising: measuring a first time (T AB) for a first signal to propagate between a first end data input transmit system and a first end transmit air frame detector, the first end data input transmit system and the first end transmit air frame detector being at a first end transceiver of the wireless communication channel; measuring a second time (T CD) for the first signal to propagate between a second end receive air frame detector and a second end data receive system, the second end receive air frame detector and the second end data receive system being at a second end transceiver of the wireless communication channel, the first end transceiver and the second end transceiver divided by a wireless link; measuring a third time (T DP) for the first signal to propagate between the second end data receive system and a second end data input transmit system, the second end data input transmit system being at the second end transceiver; measuring a fourth time (T PQ) for the first signal to be received by the second end data input transmit system and a second signal to be received at a second end transmit air frame detector, the second end transmit air frame detector being at the second end transceiver; measuring a fifth time (T RS) for the second signal to propagate between a first end receive air frame detector and a first end data receive system, the first end receive air frame detector and the first end data receive system being at the first end transceiver; measuring a sixth time (T AS) based on when the second signal is received by the first end data receive system to when the first signal is received by the first end data input transmit system; providing, by first end transceiver, the first time (T AB), the fifth time (T RS) and the sixth time (T AS) to the second end transceiver; or providing, by the second end transceiver, the second time (T CD), the third time (T DP) and the fourth time (T PQ) to the first end transceiver; determining a seventh time (T BC) for the first signal to propagate between the first end transmit air frame detector and the second end receive air frame detector across the wireless communication channel based on the first time, second time, third time, fourth time, fifth time and sixth time, the determining the seventh time including subtracting the first time, the second time, the third time, the fourth time, and the fifth time from the sixth time to determine a two-way wireless communication channel link time and dividing the two-way wireless communication channel link time by two, wherein the frequency is known by the first and second end transceivers; and determining the phase based at least in part on the seventh time. measuring a first time (T AB) for a first signal to propagate between a first end data input transmit system and a first end transmit air frame detector, the first end data input transmit system and the first end transmit air frame detector being at a first end transceiver of the wireless communication channel; measuring a second time (T CD) for the first signal to propagate between a second end receive air frame detector and a second end data receive system, the second end receive air frame detector and the second end data receive system being at a second end transceiver of the wireless communication channel, the first end transceiver and the second end transceiver divided by a wireless link; measuring a third time (T DP) for the first signal to propagate between the second end data receive system and a second end data input transmit system, the second end data input transmit system being at the second end transceiver; measuring a fourth time (T PQ) for the first signal to be received by the second end data input transmit system and a second signal to be received at a second end transmit air frame detector, the second end transmit air frame detector being at the second end transceiver; measuring a fifth time (T RS) for the second signal to propagate between a first end receive air frame detector and a first end data receive system, the first end receive air frame detector and the first end data receive system being at the first end transceiver; measuring a sixth time (T AS) based on when the second signal is received by the first end data receive system to when the first signal is received by the first end data input transmit system; providing, by first end transceiver, the first time (T AB), the fifth time (T RS) and the sixth time (T AS) to the second end transceiver; or providing, by the second end transceiver, the second time (T CD), the third time (T DP) and the fourth time (T PQ) to the first end transceiver; determining a seventh time (T BC) for the first signal to propagate between the first end transmit air frame detector and the second end receive air frame detector across the wireless communication channel based on the first time, second time, third time, fourth time, fifth time and sixth time, the determining the seventh time including subtracting the first time, the second time, the third time, the fourth time, and the fifth time from the sixth time to determine a two-way wireless communication channel link time and dividing the two-way wireless communication channel link time by two, wherein the frequency is known by the first and second end transceivers; and determining the phase based at least in part on the seventh time.