I purchased this three valve battery radio
from an antique dealer in 2015, the early valves and the the wireless
licence caught my attention. But when I got round to examining it
further when I got home I discovered that all three valve had open
circuit filaments. The licence was interesting, it had clearly been
the last of several which had been stuck with postage stamp edging to
the inside of the lid over many years.
How the radio looks today after repairing and strengthening
the cabinet. I guess the cabinet might have originally been a 1920's
table or one for storing sewing materials or something similar. The
drop down flap is a later amateur modification. It is made of oak
stained black. the flap is of plywood. I have removed some of the
original modifications and strenthened and squared the radio
compartment. It was then rubbed down and given a coat of Sadolin
varnish, the top which had seen too much sun neede two catings.
As received internal view.
Close up of the licence dated 1938 in the name of E P Scholfield of Sand Hall.
Edward Paget Scholfield, (1877-1967), the eldest son of the barrister Robert Stanley Scholfield, J.P. and Ada Paget of Welton, took over the running of the Sandhall estate after his father's death in 1913. Born in London, he was educated at home by a German governess, Anna Wald, before going to Eton. At Trinity College, Cambridge, he read Agriculture, specialising in land agency. In 1898, he was elected a Justice of the Peace and became a County Councillor in 1916.
For more information about him and the family read
this fascinating article
When I removed the slow motion drives it was evident that the the front panel had faded considerably over the years.
After a fair bit of elbow grease using wire wool 'T Cut' and furniture polish brought back the original patina.
This is what it looks like after cleaning and replacing the
useless valves. I used a pentode with the screen strapped
to the anode for the output stage. The power supply shown
below can be seen at the rear of the radio.
Power supply internals and front panel.
The 2 Volt supply is derived from a 6 Volt 800 mA wallwart seen on the right in the photo which supplies a voltage regulator the output of which is determined by the 220 and 150 ohm resistors. A 220 Volt centre tapped 9-0-9 Volt transformer has been used to supply the two HT voltages needed for the set.