6 degrees of frost, very dull; the trodden snow is dangerous under foot. A slippery journey to Merton to buy a Marconi pick-up at Collins electric shop just beyond the level crossing. Called to ask about Fred Spooner who is in hospital. Fitted the new pick-up and tested it but is more powerful than the Burndept it replaces. It only needs two stages of amplification so must make the necessary alteration. It is majestically powerful with a marvellous bass response.