Complex sentence: For a message to be sent over the VHF network, the radio transmits the VHF signals containing the delay message, which is then received by a VHF Remote Ground Station (RGS).
Split into simpler sentences: For a message to be sent over the VHF network, the radio would transmit the VHF signals containing the delay message. This message is then received by a VHF Remote Ground Station (RGS).