Heathkit RA-1 - Page 2

Partial manual for British Heathkit 160-10m Hamband receiver.
Compliments of Dave Gordon-Smith, G3UUR.
This partial copy of the Assembly and Opera
the specification, circuit diagram, operati
assembly instructions which are relevant to
Daystrom Ltd, the UK subsidiary of the Heat
as an entry-level ham bands receiver in 196
RA-1 is merely a copy of the American Heath
ting Manual for the RA-1 contains
ng instructions and those parts of the
alignment and restoring an RA-1.
h Company, introduced the RA-1
3. It has been suggested that the
kit HR-10. This is simply not
true, as a glimpse at the circuit and valv
end module of the RA-1 was made by Electron
known company to British home-constructors
for Daystrom Ltd was slightly different to
front end, in that it has the bands wired 1
The mains transformer of the RA-1 has taps
as it was intended to sell this receiver an
Empire, where many different mains voltages
c/s.
(tube) line-up will show. The front
iques of Felixstowe, a well-
in the 1960s. The module made
the standard Electroniques ham band
n reverse on the bandswitch.
for 100-125V, as well as 200-250V,
ywhere in what remained of the British
could be found at either 50 or 60
Some modifications have been hand-written o
Handbook. On Page 3
CHART the value of R3 has 270 ohms written
On Page 28 the value of R35 mentioned in th
altered to 270k - 560k from the original 15
noe
UG).
ver the type-written figures in the
in the RESISTOR AND CAPACITOR IDENTIFICATION
over the original value of ik.
e note on BFO injection has been
Ok -— 270k.