Heathkit 1951 Catalog

Page 1

Plays all record sizes, all
speeds.

o Newly developed ceramic
cartridge.

0 Automatic shutoff for
changer and amplifier.

0 Acousticully correct cabi-
net enclosure.

Attractive modern styling.

Two Matched Speakers.
0 Easy to assemble.

Compensated Volume
Control.

HEATHKIT

29M

RECORD
PLAYER KIT

MODEL RP-l

$595.0

SHIPPING WT. 30 LBS.

THE NEW HEATHKIT DUAI. RECORD KlT . . .OFFERING AN
ENTIRELY NEW CONCEPT OF RECORDED MUSIC REPRODUCTION

Here is a new introduction to quality record reproduction, a simple to operate compact,
table top model with none of the specialized custom installation problems usually associ-
ated with high fidelity systems. The entire unit can be easily moved from living room to
recreation room, porch, etc. Two matched synchronized speakers mounted in an acousti-
cally correct enclosure reproduce all of the music on the record, musical reproduction with
the unique sensation of being in a halo-like aurora of glorious sound. This spectacular
characteristic is possible only because of the diffused non~direcrional properties of the
matched dual speakers. The Heathkit Dual makes listening to fine recorded music a
thrilling new experience through naturally clear life-like reproduction of sound at all
levels throughout the tonal system The performance level is vastly superior to the ordi-
nary phonograph or console selling for many, many times the price of the Dual.

The world famous VM Tri-O-Matic record changer plays all three record sizes at all
three speeds. Automatic shut-off for both changer and amplifier after the last record is
played. A wide tonal range ceramic cartridge features an ingenious turn-under twin sap-
phire stylus for LP or 78 records without turning the cartridge.

Simplified easy to assemble four tube amplifier features compensated volume control
and separate tone control. Proxylin impregnated fabric covered cabinet supplied com-
pletely assembled. You build only the amplifier from stepvby-Step Construction. No spe-
cialized tools or knowledge required as full recognition is given to the fact that many
purchasers of this kit enjoy good musical reproduction on a purely non-technical basis and,
therefore, the construction manual has been simplified to the point where even the comv
plete novice can successfully construct the Heathkit Dual without difficulty. The price of
the Heathkit Dual includes cabinet, VM record changer, 51/2 speaker
circuit components required for amplifier construction

,,

Page 2

MODEL AR-2

$255.o

SHIP. WT. 12 us.

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20 WATT HIGH FIDE

A new 20 watt high fidelity amplifier designed especially
for custom audio installations demanding clean reproduc-
titm, adequate power. and flexibility to meet individual
operational requirements, Separate treble and bass tone
controls provide up to 15 db boost, or 15 db cut. Four
switch-selected inputs have been provided, each with the
necessary dcgree of compensation for the service desired.

This fine amplifier features a Peerless output transformer
with output impedance: of 4, 8. and 16 ohms to further
simplify speaker installation problems. Preamplifier. ampli-
fier, and phase splitter circuits utilize 9-pin twin triode
minttutc tubes [or extremely low hum and noise I:\-:l.
The circuity features a separate hum balancing potenti-
ometer for absolute control of hum. Two 6L6 push»pull
operated output tubes provide full 20 watts output power.
DC operating voltages are obtained from a well-filtered
power supply, using a SUAG rectifier tube. The chassis is
finished in an attractive enamel hammer-tone gray finish,
and features adjustable length break-off type control shafts
for added convenience.

Here is truly outsmnding performance at modest cost.
The kit includes all tubes, parts, chassis, circuit components,
and a completely derailed construction manual featuring 21
fool-proof stcp-bystep assembly procedure.

gBROADCASTBAND«n

NAME IN

UNICATIONS RECEIVER KIT

Here is the Receiver kit you have repeatedly asked for, a new Heathkit Communications
Receiver, the perfect companion piece for the AT-l Transmitter Kit. Many outstanding
desirable features have been incorporated in the design of the AR»2 such as: electrict
spread scale for logging and tuning convenience - high gain miniature tubes and I :-
formers for high sensitivity and good signal to noise ratio - separate RF gain control with
optional automatic volume control or manual volume control in addition to the conventional
audio gain control. Noise limiter - standby switch # stable BFO oscillator circuit- head-
phone jack, etc, all contribute to a high performance standard.

Frequency coverage is continuous from 535 KC to 35 MC in four ranges. For added

THE

convenience, various Ham bands have been sepa-

. Rectifier

high x 6% deep.

., 553 KC to 35 MC

. Mixer oscillator

IF amplifier

, Detector - AVC - Audio
BFO oscillator

Beam power output

Chassis dimensions: 111/2 wide x 5%

105-125 volts AC 50/60 cycles 45 watts.

ratcly identified in respect to their relative place-
ment on the slide rule tuning scale. A chassis
mounted 51/2 PM speaker is included with this
kit.

The Heathltit AR-Z is supplied complete with
all tubes, punched and formed shcet metal parts,
rircuit components, and detailed step-by-step
construction manual.

CABINET Ptoxylin impregnated fabric covered
plywood cabinet. Shipping wt. 5 lbs.

PartNo.91»10 ..........

$4.50

AMPLIFIER KIT

SPECIFICATIONS

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lelPonu t at» 20 to
vawnr outpu 20,000 cps
_ a! Mama 0 walls
Distortion,
70 l at a an
below med
output)

Tone cuntmn
am in :lo eta-inns dh boost.

5 I) cut

7.1mm is an). is ab boost.
20 all rlll.

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umpllfier and
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RECEIVER KIT

MODEL A-9A

$355.o

SHIP; WT. I5 155.

Another new Heathkit, the Model BR»2 Broadcast Band Receiver. Here is the ideal
radio kit for the student, beginner, or hobbyist. If you have ever had the urge to build
your own radio receiver, this kit warrants your attention. An outstanding feature
seldom encountered in so-called beginner's kits is that the entire receiver is transformer
operated, thereby eliminating the shock hazards usually associated with AC-DC circuitst

New high gain miniature tubes and IF transformers providc excellent sensitivity
and good signal to noise ratio. A powerful ferrite cote built-in rod type antenna has
been provided A chassis mounted 51A" PM speaker provides excellent volume and

" ' tone quality not ordinarily expected in this low price range.

The BR-Z can be Operated either as a receiver or tuner at the flick of a switch. A
chassis mounted 110 AC receptacle is provided for accessory operation such as ampli-
fier or phonograph. In this manner the single on-ofl switch of the receiver will control

the operation of additional equipment.

An intetesting aspect of the BR-Z kit is that in the construction manual particular
consideration has been given to the Student and in addition to a complete breakdown
of overall circuit theory, further explanations are given as various circuit developments
are encountered.

This Heathkit is supplied complete with all tubes, chassis. speaker, circuit com-
ponents, and a completely detailed consttuction manual. Tube line-up: 12BE6 Mixer
oscillator, 12BA6 IF amplifier, 12AV6 Detector - AVC - First audio, 12A6 Beam p;
output, 5YSG1' Rectifier.

CABINET Proxylin impregnated fabric covered plywood cabinet. Shipping wt. 5 lbs.
Part No. 91-9...

...$4.50

Newl2VoIIBATTERYELIMINATOR.....................Poge3

Page 3

Here is the latest Heathkit addition to the ham radio
field, the AT-l Transmitter Kit, incorporating many
desirable design features at the lowest possible dollar-
per-watts price. Panel mounted crystal socket, stand
by switch, key click filter, AC line filtering, good
shielding, etc, VFO or crystal excitation-up to 35
' input-single *knobdtand switching -prc-

d coils-builr-in power supply, 52 ohm co-
axial output, all represent outstanding Hearhkit fea-
tures. Built-in power supply provides 425 volts at
100 ms. Amazingly low kit price includes all circuit

components, tubes, cabinet, punched chassis, and de

tailed consrruction manual. (Crystal not supplied.)

:Nsw-WW "

VARIABLE;

Here is the new Heathkit Batt

ery Eliminator that you service men have been requesting. The
Model BEA furnishes either 6 volts or 12 volts output at the flick of a panel switch. Use the

MODEL BE 4 A ,

$315.0 7

SHIP. WT. I8 LBS.

short periods of operation.
10.000 mf condensers. The
termining the starting point

BIZ-4 to service the new 12 volt car radios in addition to the conventional 6 volt radios.

The Heathkit BE-é provides two continuously variable output ranges 0-8 volts DC at 10
amps, or 046 volts DC at 5 amps. Heavier loads up to 50% increase may be safely carried for
The input voltage is clean and well-filtered, as the circulf uses two
continuously variable voltage output feature is a definite aid in de-
of vibrators and the voltage operating range of oscillator circuits,
stantly monitor voltage and current output and will quickly indicate
the presence of a major circuit fault in the equipment under test. The power transformer primary

Panel mounted meters con

winding is fused, and for additional safety an auto-

, Wm

requirements I75 walls

SPECIFICATIONS

Vohage

output... ..o.s volts at W amps cenIinuous
15 amps maximum intermittent,
0-16 volls 1:15 amps continuous
7.5 amps maximum intermittent.

Meier: ...... 0-15 volts DC

. ' 045 amps c
Power 105-125 vol 5 50/60 cycles AC

Dimensions. "Java" wide x 7% deep x 7%"
I9

maric relay of the self-resetting ty is incorporated
in the DC output. The heavy uty rectifier is a
Mallory lB-plate, split type magnesium copper sul-
fide unit used either as a full wave rectifier or volt-
age doubler according to the position of the panel
range switch, '
Here is the ideal battery eliminator for all of
your service problems, and as an additional feature, I
it can also be used as a battery charger. The BIB-4
kit contains all necessary constructional material,
circuit components, and a detailed construction .
manual. Two hours of your assembly time will fur-
nish your shop with a high~quality battery elimi-
nator capable of producing many years of useful
service.

~zw MEAYNKIY antenna COUPLER spoclfl-
cully dcsiimcd on the "tannin Am Irlmxmlutr.
(lln in- rim with any 52 oiln) coautlnl innit»
up In 15 wilttlr power. Low pnss nllor w m i.
cut-o" newt-my m nnproximnlely on me _ 1. no
tlon Lunlili: xiclhtlrk-Iuon tuning innicnwr-
minted campnci collxtnlcllnn-trmlsmllter typo
Vilrhlhle condenser sml lilgh o coll nro roarumr.
The AC-l nn. IVOI)! inductance and raunchy tumult
Ior Itmxlmum uni-mum: vorsuulll). :nliininn wt.
:l Ilix.. rnhluel. til/s wini- x 4%" high x am.
new. $14.50

SPECIFICATIONS

so, 40, 20, ls, ll, lo melers
. escinninv multiplier

. ...Amplifier doubler
Reelifier
105.125 volts ac 50/60 cycles loo wutis

Dimensions , "avg" high at law wide x 7 "
deep

SPECIFICATIONS

Input vnlinge

cycles

cycles

Power rating

Dimensions...

77/5" deep

...105-125 volts AC 50/60

Output volluge........90-130 volIs AC 50/60

200 watts muxmmm

..8/a high at 43/5 wide x

MODEL AT-I

$295."

SHIP. Wt. 16 tas. , '

IK
SOLATION TRANSFORMER KIT b]

, . I n

, N

Another new Heathkir for the service man, the Isolation Transformer Kit, Model i
ND '7" lT-l. Provides line isolation for AC-DC radios thereby eliminating shock hazard, «:3

hum problems, etc, The secondary or output voltage of the IT-l is variable be- 0

$l6 5° tween the range of 90 to 150 volts AC, and is constantly monitored by a panel :1

o mounted AC volt meter. if)

The Heathkit Isolation Transformer can be used to increase radio AC oper- E

SHIPPING WT. ating input voltage to induce breakdown of faulty or intermittent circuit com- b4

9 LBS. poncnts. This feature is of special value in saving the service time required to ill

locate intermittents. Use it also to simulate varying line voltage conditions and to "

determine the low line voltage level at which _
oscillator circuits cease functioning, particularly

in 3 way portable radios. The IT-l is of definite !
value in eliminating the many annoying prob

lems that occur in alignment work involving
AC-DC radios.

Additional applications would be to check 9
the starting characteristics of fluorescent lamps,
small motors, or even to isolate interference ra-
diating devices from the power supply line. Con~
tinned service shop use of the isolation trans-
former Will suggest many additional applica-
tions. Build this kit in thirty minutes for years
of useful service. Easily assembled from de-
tailed instructions.

mo