Band Switch - Kenwood TS-930S Instruction Manual

@ KEY CONNECTION (Fig. 5-6)
NOTE:
When
using an electronic keyer,
set polarity of the keyer for
positive keying.
@ CW break-in
(1) Semi break-in
(2) Full break-in
CAUTION:
Full break-in operation
is not possible
in combination
with the
TL-922(A) linear amplifier.
10. Final protection
The TS-930S incorporates four final stage transistor pro-
tection circuits. Two protection circuits monitor antenna
VSWR and final amplifier current and automatically reduce
output power, if a fault occurs. A third circuit monitors the
final heat sink temperature and controls the cooling fan
when the temperature elevates to 50°C. This is sufficient
to cool the heat sink under normal circumstances. The
fourth protection circuit operates if the heat sink
temperature has exceeded safe-limits because of poor con-
vection cooling (above 75~80°C). Transmission will
automatically be locked-out and the transceiver will return
to reception mode.
When the temperature protection circuit is on the cooling fan
operates at increases speed for faster cooling. When the
heat sink temperature falls below to 65 ~ 70°C, this protec-
tion circuit resets and the transmitter is again enabled.
The fan will stop when the heat sink returns to 45°C.
5.5 BAND SWITCH
(1) BAND switch
(2) 1-MHz step switches
5.6 2 VFO OPERATION
F
Table 5-3
(1) FUNCTION switch
This selects VFO A, VFO B, VFO A-R, or VFO B-R. In the
VFO A-R and VFO B-R modes, either split frequency (in the
same band), or cross band operation is available. This
system closely approximates the feel of operating a
separate receiver and transmitter. The FUNCTION switch
selects working VFOs, as summarized above.
in addition, the unused VFO may be used as a memory.
For exemple, when waiting for a scheduled contact, store
the schedule frequency in one VFO and continue to operate
or search on the other VFO. until your scheduled contact.
(2) A=B switch
Use this switch to equalize the frequency of the idle VFO to
that of the working VFO.
(3) D. LOCK switch
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