this is just a really extravagant heater, physics forbids antenna this small to have good radiation resistance. for your contrived below noise communications scheme, you need more bandwidth that is physically possible on hf, yet you choose antenna design that is even less wideband than regular dipole. 40m of wire is for 80m band, which is usable more often in this configuration, ignoring everything else
As for throughput: a channel that is 9 KHz wide is supposed to transfer 9.6 kbit / s
5500kbps in extremely favourable conditions is your peak attainable speed, bandwiths in normal radios are narrower
A reasonable detection avoidance technique might be broadcasting from a depressed location or an urban canyon with tall ground clutter
if you don’t want anyone to hear you
launch your guerilla transmitter on a free flight balloon, and will have plentiful line of sight.
with what power source? better study for and get your license, start using radio and stop embarrassing yourself
this is just a really extravagant heater, physics forbids antenna this small to have good radiation resistance. for your contrived below noise communications scheme, you need more bandwidth that is physically possible on hf, yet you choose antenna design that is even less wideband than regular dipole. 40m of wire is for 80m band, which is usable more often in this configuration, ignoring everything else
5500kbps in extremely favourable conditions is your peak attainable speed, bandwiths in normal radios are narrower
if you don’t want anyone to hear you
with what power source? better study for and get your license, start using radio and stop embarrassing yourself