Operation; Control Functions - Heathkit SB-104 Operation Manual

OPERATION
NOTE: YOU MUST HAVE A N AMATEUR RADIO
OPERATOR AND A STATION LICENSE BEFORE
PLACING THE TRANSMITTER SECTION OF THE
TRANSCEIVER ON THE AIR INFORMATION ABOUT
L I C E N S I N G A N D A M A T E U R FREQUENCY
ALLOCATIONS IS AVAILABLE FROM PUBLICATIONS
OF THE FEDERAL COMMUNICATIONS COMMISSION
OR THE AMERICAN RADIO RELAY LEAGUE.
Operation of the Transceiver has been simplified as much as
possible to permit rapid adjustment by the operator. Once
the initial settings have been made,
it
should not be
necessary t o readjust most of the controls. Read the
following information carefully. Good operating techniques
will provide good clean signals and long trouble-free life of
the Transceiver.
IMPORTANT: A transmitter which employs solid-state
devices requires different operating techniques than one
with vacuum tubes. For example, duty cycle restrictions
must be strictly observed because power transistors are not
as forgiving as tubes. If the operating parameters of
solid-state devices are not exceeded, they will last
indefinitely, but they can be easily destroyed b y
carelessness. As a result, it
is
extremely important that these
operating instructions are read, comprehended, and
observed. They are not complicated, and will become second
nature after you go through them a few times.
A number of the actions listed i n this section were covered
earlier in this Manual, but are repeated here because they are
essential for proper operation of your Transceiver.
CONTROL FUNCTIONS
Refer t o Figure 3-1 (fold-out from Page 256) for a front
panel view of the Transceiver and a concise explanation of
control functions.
Figure 3-2 (fold-out from Page 263) shows rear panel
controls and connections. Figure 1-3 (fold-out from Page
237)
is
a top view of the Transceiver chassis which identifies
circuit boards and subassemblies, as well as some additional
controls. The following paragraphs describe the control
functions more completely.
IDENTIFICATION
DISPLAY
Displays the frequency t o which the Transceiver is tuned,
plus or minus 100 Hz. Depress the "100 Hz" button if you
want to blank out the right-hand digit, which displays the
'
100
Hz points. If the accessory VFO is being used for split
frequency operation, the display will follow both the
receiving and transmitting frequencies.
AF GAIN
Increases the volume of the received signal with clofkwise
rotation.
The station call leners can be displayed here or the space
can be blanked out.