Receiver R1116A from Swordfish Aircraft
The R1116A general purpose aeroplane receiver dates
from the late 1930s and early 1940s and was used with the companion T1115 transmitter,
fitted to the Fairy Swordfish aircraft.
The R1116A receiver is a double-superhet with a very comprehensive frequency
range for its time, covering 142 to 1600 kc/s and 2 Mc/s to 20 Mc/s, and
providing direction finding facilities in addition to the usual RT and CW
It is an 8 valve receiver designed to operate from battery supplies of 2
volts, 10.5 volts and 120 volts.
The electro-mechanical construction is all aluminium, and the equipment is
notable for using permeability tuning (as opposed to variable capacity tuning).
It is believed that this equipment type may have also been fitted to some
British Sunderland Flying boats.
view of the R1116A receiver showing the condition of the panel as received,
without knobs, but after a light clean.
is some corrosion of the front panel, chassis and wrapper, and heavy
corrosion to the frequency dials.
This equipment example appears to be complete electrically, and almost complete
mechanically, except for the bottom cover and the DF aerial socket. However,
some small differences have been noted between this equipment and the official
technical publication AP1186 Vol. 1 Section 3, Chapter 8.
restoration process will include general cleaning, removal
of corrosion, stripping
and respraying the front panel and wrapper, and re-lettering the front panel
A thin aluminium panel engraved with the frequency range information which
supports the two frequency dial cursors is in poor condition, and may have
to be re-manufactured and re-engraved.
It is expected that with time, this equipment will be returned to working
R1116A receiver with its wrapper and top cover removed, showing the all-enclosing
aluminium valve screens and the cardboard covered 10 volt grid-bias battery.
The control knobs are fixed
in the correct positions in these views.
showing the R1116A receiver showing the top side with the valves and plug-in
IF modules removed.
Second view is R1116 receiver underside wiring.