Heathkit RA-1 User Manual

Assembly
and
Operation
of
the
Heathkit
Basic
Amateur
Receiver
MODEL RA-I
SPECI
“ICATION
Frequency Coverage
160
metre
Band
>
ies
++
1.7
to
2.0
Mc/s
80
metre
Band
...+...+0+005
"
3.5
to
4.0
Mc/s
40
metre
Band
...-..+-eseeeerereeee
ban
7.0
to
7.3
Mc/s
20
metre
Band
...-...0seeeseeeeeerenees
“
14.0
to
14.45
Mc/s
|
15
metre
Band
...essecereeeeeccseerrenerers
21.0
to
21.5
Me/s
10
metre
Band
28.0
to
30.0
Mc/s
attice filter
Intermediate
Frequency
bab
ney
SE
Weele
.
1621
Ke/s
(4
r
10 dB
S/N
ratio
or
better
2 microvolts
Sensitivity
Image
Rejection:
40
dB
or
bette
Input
Impedance:
.....++
758
co-axial
or
terminal
32 (speaker), 6009 (phones)
Audio
Output
2
watts
(for
8
pV
signal)
|
Panel
Controls
seed
adds
pds
ebdererresererrecs
AF
GAIN
incorporating
AC
on-OF
F
|
RF
GAIN
MAIN tuning
BAND switch
}
BFO
ON-off
|
AVG
on-OF
F
USB. °. LSB MODE switch
|
CALibrate
press-on
switch
Audio Output Impedance
CALibrate ADJust
ANTenna TRIMmer
NLM
Valve
and
Diode
Complement:
....+-+++++++e++
EF
183
RF
amplifier,
ECH81
Mixer
oscillator,
EF
183
Ist
IF
amplifier,
ECF82
2nd
IF
amplifier
-
BFO,
OA81
Detector,
OAS!
AVC,
EB91
Noise
limiter,
ECL86
Ist
audio
-
audio
output,
EZ81
Rectifier,
OA2 Stabiliser
{ - max
ctoucesrsn
—<—_—_$_—<_
—_——____—___—_
(i.
ENG
ANND

Heathkit RA-1 Specifications

General

Brand	Heathkit
Model	RA-1
Category	Receiver
Language	English