Heathkit GR-78 - Page 26

Pet ono
CALThe calitrate switch tums on 3 500 KH crystal
‘sltor whch provides cata sgrala wary £00 KH
hong the ia,
LIGHT SWITCHA soring atu atch that ture. the
‘bane lamps. Retr wo of by spring action to coconsare
‘etary power,
120 VAG Socket-Provies for connection to 120 VAC
ctarging source (or 240. VAC, depending on how the
Receiver i wired.
12 VDC Socket Provides for connection for 12 to 15 VDC
charging sours
PHONE JACK—For headphones or external speaker, The
sosakr ia automatically duconnactad when pone plug ie
inte,
TUNING AM SIGNALS
“The Recivr controls should be et fotions:
[AF
GAIN-On
(turn
elochis
oa
confortable
iatning
eval),
‘AM-CWISS8—AM.
BAND SWITCH -Deired band.
RF GAIN-Full on (lock
ANL-OFF—OFF (unless ces ole present),
AVCMVC-AVE lunes copying weak sal,
“Tun th signal to peak the reading on the tuneg meter,
‘them ast AF GAIN conto for dsr output eva. the
signal fs extremely strong, turn the RIF GAIN control
counterclockwise 1 reduce posible dtortion.
‘TUNING SSB OR CW SIGNALS
‘The Recelve controls should be vt flown:
{AF GAIN-On (turn clockwie tow comfortable stening
lov.
AM-CW/SSB-CW/SSB,
[BAND SWITCH-Desied band,
IRF GAIN--Fullyclockwis,
ANLOFF-OFF (unless wicesive role preset),
-AVCHMVC-AVE
(ules
copying
wank
sal),
‘Tuna
in
SSB
via.
The
tonal
wil
have
“quacking”
‘und
ot
Tuning
thes
sgnale
wil
require
practice
due
to
{he
narrow
bandh
of
the
signal.
Vary show
tuning
required,
and
the
AF
Gain
may
ao
have
tobe
aust
‘shen
listening
to
«trang
station,
FIXED STATION RECEIVER
When ung this Receiver with « wranwmitr, the muting
‘wrinuls on the rear ofthe chasis should be utd Tho
‘erin ae the B+ aad to te audio preamp.
Using an external svitch or arly, the terminals 1 a2 of
‘the rutin trina should be open (dlseonnect) during
the transmit pwd and closed (connected) during the
recnve period. The himper wire usd in normal operation
must be removed for hie type of operation.
1 sing this Recsver as tho station reese in cose
proximity. 19 « tanunitar, i i desirable wo short the
External Antenna tarminal to. ground during transit
ondions Otherwise excasive signal to the"Yront nd of
the Receiver may cause failure of the AF amplifier
aia.
‘You may notice ligt hum whan the Recsive i tuned on
fed the AC tne corde plugged In. This hum can be
tdiminata ty disconnecting the ine cord,
BATTERY LIFE AND RECHARGING
‘Toa lecdver operates rom an. internal rechargable
icke-acnium battery, The battery can be charged from
120 VAC, 240 VAC, or 12 to 18 VDC. Separate power
‘2rd we ppd for AC oF OC charging voltage ane ach
‘cord has. separate power socket on the rer panel, Only one
‘ower cord should be connectad at a tne. When ether
‘ower cord is wd, the battery i sways being trickle
‘charged when the ecaver is OFF, This Koop the battery
‘uly chard,
Batty fife canbe extended if you us the da lamp only
hen necessary, and then only biel, To chick fr a weak
bate, tu 10a radio ston of moderate strength Than,
while wating the TUNING moter, pre the LIGHT switch,
{sh meter nee drops more thar 1/8 the try neds
rechariog.
Depenting on the charging voltage, the Dairy i always
bing charged ot 20 to 28 mA when the builtin rede
‘charging cult it connected to 120 VAC, 240 VAC, oF 12
tw 18 VDC wit the front pon sitch OFF, A his charge
‘te, ful battery charge wil be maintained the Reeser
ud an verge of B hours dally at & normal itening lve
W the Reesivor will not be wad for 30 days oF more,
connect the externa power source,
“Tho battary le ectrically divided in ha for charging from
‘AC. When the AC power cord i plugged into a power outlet,
‘the AG voltage fom he acon of transformer TON s
‘pple! tvough done D601 on oneal eye charge