Speech Processor (Ssb/Am); Changing Frequency While; Transmit Monitor - Kenwood TS-870S Instruction Manual

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7 OPERATING AIDS
SPEECH PROCESSOR (SSB/AM)
The speech pracessor functions by leveling the large
fluctuations in your vaice 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.
Raise
1 '
800 Hz 1.6 kHz
f4.3 Press [PROC] to switch ON the processor.
@ =» "PROC' lights.
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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 contro! 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.
Mode Transmit Sampling Point
SSB | Unmixed AF
CW | Keyed output from DSP with sidetone OFF
FSK | AF corresponding to the shift and mark/space|
AM | Unmixed AF |
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.
gueeensers,
6 Press [METER] to select the ALC function.
7 The compression level affects the ALC setting for
SSB; therefare, while continuing to speak into the
microphone, adjust the CAR control for a reading
within the ALC zone.
+ Keep the meter inside the ALC zane for the
cleanest transmit signal and ta avoid interfering
with other stations on adjacent frequencies.
46
Unmixed AF
Press [MONI] to toggle the Monitor function ON or OFF.
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* To change the volume of the monitored audio,
adjust the MONI control.