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4.3,
CALIBRATION
SSB OPERATION
(See Figure 8)
Set the MODE
switch to USB or LSB and turn the CAL
switch to 25K or 100K
to turn on the crystal calibrator.
Turn
the main
tuning
knob
to the nearest
100 KHz or
25 KHz (if the CAL switch is at 25K) and decrease the AF
GAIN control as necessary for a comfortable listening level.
Tune
the VFO
until the calibrator
signal is zero beat.
When
the calibrate signal is zero
beat in the receiver, set
the dial pointer to the 100 KHz or 25 KHz point on the
_dial scale with the dial pointer calibrating lever.
If the dial
pointer cannot be moved far enough to calibrate the trans-
ceiver see Section 6.9 for internal calibration.
For SSB
operation the pointer now indicates the carrier frequency
for transmission and reception.
1
Vfo
'
\
tft
1
|
i}
\ I
I
en
LSB filter |
Wf
' USB filter
|
WW
!
H
1
H
1
|
\
1
I
\
Hi
!
\
i\\
I
H
! \ e50Hz
H
\
I
|
| 1 i
1
ae
X
_1Y we
4
Frequency
SSB
carrier
frequency
and
Pointer
FIGURE 8.
A
CW
transmit/receive
frequency
CW
OPERATION
(See Figure 8)
CW
filter
:
N\
becoccccccrccccscccc
ctr
|
|
[!
y
Frequency
CW
BFO
frequency
i
(3394. 15kHz)
Pointer
CW transmit /receive
frequency (3395kHz)
with optional CW
filter
15
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