London ATC
I probably fly the worlds most expensive aircraft but we are using the cheapest headsets money can buy. When in London FIR all the other aircraft are loud and clear but the controllers sound like they have their heads in a bucket of cotton wool. Have you got headsets even cheaper than ours ? We keep adjusting the volume down when other aircraft transmit, then miss clearances from London. What would be the ideal Mach/IAS in the climb and descent as far as ATC are concerned ?