Heathkit GR-78 - Page 25

OPERATION
Before attempting to use the Receiver, carefully rad the
front and rear pane explanations to learn the funetlons ot
‘ach ofthe contol, itches, a connects
FRONT AND REAR PANEL
CONTROLS AND SWITCHES
Refer
to
Figure
8
(fol.
from
Page
86)
and
the
following
Information
for
#
description
of
control
and
switch
functions.
AF GAIN—Turrs tho fier on or OFF. Varia the
Yount of the sound from the speaker or headphones by
antroling the amount of audio amar in.
[RF GAIN-Vores the tourna of the sound from the
‘oasker oF hmphones by contoling the amount of RFE
emilee aio, NOTE: 1 maybe dsb owt ti control
toward ful counterclockwise on strong SSB ngs for best
fidelity. Normally it wl be et at oF paris ful clockwise
ponition,
/AML-CWISSB Selects the following types of racption: AM
(amplitude modulation), SSB tinge sideband) or CW
(cominaous wave.
[BAND-Seeets ont ot sx frequency bandh: A,B,C, 0, E,oF
F
[MAIN TUNING-Tunes the Recevr 10 the dev sation,
BANDSPREAD-A fine tuning adustment that ud in
onjunetion with the Main’ Tuning to. help separate
‘losetogether signals on crowded frequency bands. Thi
ona normaly fet i fully COW poston when notin
ne, sine I affets the main dial elation. To use the
‘alate BANDSPREAD, wt the MAIN TUNING dia to
‘one of the fraquenci« shown on the right side of the
tbandiprand scale, Now tune with the Bandipread for
‘expanded fraquncy coverage. 1 wl seldom be necessary 10
se his contra on Bands A and 8.
AVCIMVC-Astomatc Volume Control, The AVC cleuit
‘autorutialy adhe the volume level to comperute for
anges nal strength It ols reduces the eect of
"bling when a trong gna itu nLeave thie witch
Inthe AVC position except whan staring tO vry weak
‘alors nd then the MVC poston should be wed. This wl.
‘tow manual volume contro of the RF stag, Cistrtion
vl occur, however ita song station i reeved wien the
[AF Galn contro i fly clock.
ANLOFE—Automatic Noise Limiter, Limite siti td
‘nition roe when in the ANL position. Tur tis wih fo
AN only when noite limiter setion i daied, When 9
strong sal tune i, turn the switch to OFF to prevant
Astron.
IRGV/STBY.—Thiseviteh has two postions; RCV (resive)
land STBY (nandby). For normal Receiver operation, ue
‘the REV position, To Keep the Receiver randy for iatant
a, steht the STBY position,
TUNING METER-Provider meter Indication for preci
signal tuning. AVEMVC switch must be set Yo the AVE
‘oston to allow tht meter to be wed. For maximum meter
(etletion the RF GAIN ut ein he fll clockwise
potion,
OF