Mini-Mod MW 'Micro Transmitter'

[Terry]

They only slight downside - which some may argue is an advantage - is the short range. 

With respect, David,  "I have ... about a Metre of flex draped on the floor as an antenna." is hardly a recipe for an effective MW antenna!


A vertical whip might help with the height, alternatively use a longer wire round the curtain rail.


Note that antenna is attached to the tuned (high impedance) side of L2 and will tend to detune it so I would retune L2 to suit whatever aerial you use.