serial number 1338
Dynatron "Nomad" model TP10 Six transistor portable radio
housed in cloth covered plywood case, Long/medium wavebands (1100-1800
metres and 200-550 metres). The set is designed to use two 6 volt PP1
batteries wired in series with no centre tap. As these are not readily
available I have made up a 12 Volt battery pack using eight AA cells
and the set works reasonably well.This is the first of Dynatron's range
of transistor radios and was released in August 1958 to be replaced by
the TP11 in August 1959. Maidenhead, Berks, UK
This is one of six radios which used to belong to the late Mr R M Nightingale given to me by his daughter. Roy Nightingale worked at Cambridge Instruments for many years
The radio has two ferrite rod aerials (one for long wave and the
larger diameter one for medium wave. The brass handle fixings are
drilled with holes to enable aerial and earth connections to be made.
The left one in this view is connected via a capacitor to the aerial
circuit. There are two printed circuit boards, one for RF and IF
components and the other for the AF driver and push pull output stage.
I had a problem with the double pole on/off switch which forms part of the volume control. One pole failed to work properly and this was traced to a broken plastic lever within the switch. As only one pole is necessary I took the thing apart and removed the offending broken part. I found that the colours Red and black correspond to + and - on the battery but the colours are reversed on the circuit side of the switch i.e a black wire from the switch connects to earth on the radio! Remember the transistors are PNP.