Afc (Automatic Frequency Control) - Kenwood TS-990S Instruction Manual

Tuned Correctly (BPSK Mode)
Tuned Correctly (QPSK Mode)
BPSK and QPSK "idle" Signal
Non-modulated Carrier Signal
Note:
◆ If the PSK Encode/Decode screen is open on the main screen,
the Vector Scope screen opens by pressing [S.DISP/SEL].
◆ Use Fine Tuning if it is not easy to tune.
Contents Index
{page 4-14}
AFC (AUTOMATIC FREQUENCY CONTROL)
You can use the AFC (automatic frequency control)
function to tune the PSK signal you are receiving. The
tuning amount can be configured in Menu 2-10, "PSK AFC
Tuning Range".
[ESC] [FSK/PSK/REV]
[F1] [F7]
1 Press [FSK/ PSK/ REV] to enter PSK mode.
2 Press [DECODER] (F3) to open the PSK Encode/
Decode screen.
3 Press [AFC] (F6) to enable the AFC function.
• "AFC" appears on the upper right side of the PSK Encode/
Decode screen. The frequency being corrected with the
automatic frequency control appears below "AFC" on the
screen.
• If [AFC] (F6) is unavailable in the function key guide, press
[MORE] (F1). An alternate key guide will appear.
• Each time you press this key, the FET scope display cycles
as follows: Blank > AFC > AFC and NET > Blank
Note:
◆ If you press and hold [AFC] (F6), the difference in frequency
between the displayed frequency and the frequency of the PSK
signal is added to or subtracted from the displayed frequency.
◆ If a PSK signal is outside the operating range of the AFC function,
the AFC function does not function correctly.
◆ Even if the PSK signal is present in the operating range of the AFC
function, the target signal, if it is weak, may not be correctly tuned.
◆ The AFC function can be used only with the PSK demodulator.
ASSISTING YOUR SMOOTH QSO 5
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