Heathkit GRA 180 Schematic

Page 1

180 80. In.
Rectangular Tillie
Ill Fl
color TV

Exclusive Heachkit: Features, Plus Choice of
3-Way Installation

ERA-1804

:I. In Deluxe Early American Cabinet '
Handcrafted of luxurious maple veneers and
solids . , . all beautifully finished in popular
Salem-maple. GR-lao speaker mounts on right
side of one-piece picture-control panel mask.
Measures 181/4 D x 281/4 W X 313/4 H.

2. In Heathkit contemporary Walnut Cabinet
Factory assembled of beautiful walnut solids
and veneers with an oil-rubbed walnut finish.
The GR-lao speaker is mounted on the right
side of the one-piece picture-control panel
maskégMeasures a compact 181/4 D x 281/4
W x .

I. In A Wall 0r custom cabinet

Mount in a wall for rec room, den or where
space is at a premium. 0r tashion your own
custom cabinet to match any room's decor.
See back page for space requirements and
mounting instructions.

Features Smaller Dot Size For Improved Picture Definition & Brightness
. . . Automatic Degaussing . . . Exclusive Sell-Servicing

Hi-Fi 90 Rectangular Color Tube . . . with 180 sq. inches of 3-Stage Video IF Strip . . . reduces interference and improves

viewing area and smaller Rare Earth Phosphor" dots for livelier
colors, best picture definition. Anti-glare safety glass protects
its face,

26 Tube, 10 Diode, l Transistor Circuit . . . the latest, most
sophisticated design to bring you the best color and black &
white pictures The 24,000 volt regulated high voltage power
supply assures sharpness and clarity.

Automatic Degaussing Circuit . . . demagnetizes and cleans"
the picture everytime you turn the set on from a cold" start,
Also eliminates any manual degaussing when you move the set.
A mobile degaussing coil is included for initial set-up and adjust
ments.

Exclusive Heath Magna-Shield . . . covers the entire tubeekeeps
the picture tube free from stray magnetic fields to give you the
purest color possible.

Automatic Color Control Circuit coupled with gated automatic
gain control ( ACC) reduce color fading, and insure steady, jitterv
free pictures even under adverse interference, such as nearby
airplane traffic

2-Speed Transistor UHF Tuner . . . for either fast station selection
or fine timing of individual channels.

Deluxe VHF Turret Tuner . . . with memory" fine tuning so you
dont have to readjust everytime you return to a channel. Also
features long-life nickel silver contacts for positive switch action.
Both channel indicators are lighted for easy reading.

Kit (ER-180, all parts including chassis, tubes, mask,
UHF & VHF tuners, mounting kit, and special limitedv
field a" x 6 speaker.

definition.

Vertical Swing~0ut Chassis . hinged to make it more accessible
for easier installation and servrcmg,

Two VHF Antenna Inputs . . . for 300 ohm balanced line, and
75 ohm coax to reduce interference in metropolitan or CATV
areas.

Hi-Fi Sound Outputs . . . a cathode follower for playing through
your hi-fi system and an 8 ohm output for connection to the spe7
cial limited-field 4 x 6 speaker that's included with your kit.

Built-In Servicing Facilities . . includes dot generator and mobile
degaussing coil for initial se -up, and to converge set any time.
Manual includes full-color illustrations that show you exactly
What to look for and how to achieve it. Ends service calls for
simple adiustments and minor repairs

All Critical Circuits Preassembled 8i Aligned . . . includes VHF
and UHF tuners, 3-stagc IF assembly and high voltage power
supply You wire 3 circuit boards, assemble and wire the parts
on the chassis, connect a wiring harness, mount the picture tube
and adjust the picture . . . takes 25 to 85 hours

Circuit Breaker Protection . . . no fuses to replace ever.

Extra B+ Boost . . . accelerates the electronic beams for a smaller
spot size, higher resolution, improved definition and brighter
pictures.

Fully Warranted . . . 1 year warranty on picture tube, 90 days
on all other parts.

Assembled GRA-IBo-z,

Assembled GRA-lan-I.
Early American cabinet

Contemporary walnut cabinet

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