Generally we can get Chennai radio over the Bay of Bengal on our outward leg from SIN with a 1300 UTC dep. Coming home 1800 UTC, lucky to get anything. Sometimes get a relay through Columbo on HF, or other aircraft on VHF.
Most of the time nothing until we get Jakarta or KL on VHF. We do try all the frequencies.
Bit of a busy airway to be out of coms for an hour or two.
