Kenwood TS-870S, Instruction Manual

Page: 52 / 104

46
USB
AGC AUTO MONI
USB
AGC AUTO PROC
8 Press [METER] to select the COMP function to allow
you to monitor the compression while transmitting.
9 To switch OFF the processor, press [PROC] again.
• “PROC” goes out.
Note:
Input audio that is controlled by the AGC will be clipped.
Therefore, when mixing audio with the operator’s voice, lower the
MIC
gain control as necessary.
CHANGING FREQUENCY WHILE TRANSMITTING
Moving your frequency while transmitting is usually an
unwise practice due to the risk of interference to other
stations. While transmitting, if you select a frequency
outside the transmit frequency range, the transceiver is
automatically forced to receive mode. If transmit was
selected using the
[SEND] key, transmission will not be
resumed until you select a frequency inside the transmit
frequency range, and you transmit again.
TRANSMIT MONITOR
The Transmit Monitor function allows you to hear your
own transmitted signal.
Press [MONI] to toggle the Monitor function ON or OFF.
• To change the volume of the monitored audio,
adjust the
MONI control.
7 OPERATING AIDS
SPEECH PROCESSOR (SSB/AM)
The speech processor functions by leveling the large
fluctuations in your voice when you speak. This leveling
action effectively raises the average transmit output
power resulting in a more understandable signal when
operating using SSB or AM. You will notice that using
the speech processor makes it easier to be heard by
distant stations.
1 Select SSB or AM mode.
2 Select the preferred processor characteristics via
Menu No. 25 (PROC.LOW) and Menu No. 26
(PROC.HI).
• You can customize the low and high ranges of
the speech envelope from –6 to +6 dB.
3 Press [PROC] to switch ON the processor.
• “PROC” lights.
4 Press [METER ] to select the COMP function.
5 While speaking at your normal voice level, adjust the
PROC control for a level of 10 dB or less.
• Using higher compression will not improve your
signal clarity or apparent signal strength.
Excessively compressed signals are more
difficult to understand due to distortion and are
less pleasant to hear than signals with less
compression.
6 Press [METER] to select the ALC function.
7 The compression level affects the ALC setting for
SSB; therefore, while continuing to speak into the
microphone, adjust the
CAR control for a reading
within the ALC zone.
• Keep the meter inside the ALC zone for the
cleanest transmit signal and to avoid interfering
with other stations on adjacent frequencies.
Mode
SSB
CW
FSK
AM
FM
Unmixed AF
Keyed output from DSP with sidetone OFF
AF corresponding to the shift and mark/space
Unmixed AF
Unmixed AF
Transmit Sampling Point
dB +6
+3
0
-3
-6
Lower
Raise
Low
range High
range
800 Hz 1.6 kHz
5 0
4 9
3 8
2 7
1 6
OFF
CAR DELAY
AGC KEY SPEED
METER PROC MONI
0
2
4 6
8
1 0 0
2
4 6
8
1 0
MIC
ATT
ANT DOWN UP
VOX FULL/SEMI
AT TUNE
SEND
THRU/AUTO
AIP
PHONES
PROC MONI
MIC PWR
M.IN
REC F.LOCK
CH 4 CLR
CH 3 SCAN
CH 2 M>VFO
CH 1 M.IN
ENTER TF-SET
FINE 1MHz
QUICK MEMO
MR
SLOW FAST
0
2
4 6
8
1 0
SWR
PWR
S
9 7 5
3 1
10
25 50
FILTER
ALC
3 10 2
1.5
1
0
20
40
100
60
W
dB
dB
20
COMP
M.CH
USB CW R FSK FM AM LSB AUTO
FULL VOX SEMI AIP AGC AUTO PROC MONI
HF TRANSCEIVER TS-870 ON AIR AT TUNE
0
2
4 6
8
1 0
PROC
MONI
10
dB
20
COMP