PT6808 Service Manual
low frequency point)
3. Low power
Press the Encoder Buttons on the panel, and adjust the Tx power within 4.0-6.0W.
(Numeric key 1, 2, 3, 4, 5 correspond to high, intermediate high, intermediate, intermediate low and
low frequency point)
4. Max. Deviation
Signal source: MOD: 1kHZ/120mV, LPF: 15 kHz
A. Narrow band (N): Press the Encoder Buttons, and adjust the Max. Tx deviation to 2.0kHz ±50Hz
(Numeric key 1, 2, 3 correspond to high, intermediate and low frequency point)
B. Wide band (W): Press the Encoder Buttons, and adjust the Max. Tx deviation to 4.50kHz ±50Hz
(Numeric key 1, 2, 3 correspond to high, intermediate and low frequency point)
Wide/narrow switch—press the “MONI” key on the panel (Display “W” when select wide band, no
icon displays when select narrow band) (Press numeric key 7 to turn off pre-emphasis, no “SVC”
icon displays on the LCD)
5. DQT balance
Signal source: LPF: 300Hz
A. Narrow band (N): Press the Encoder Button to adjust the Tx demodulation waveform as flat
square wave.
(Numeric key 1, 2, 3 correspond to high, intermediate and low frequency point)
B. Wide band (W): Press the Encoder Button to adjust the Tx demodulation waveform as flat square
wave.
(Numeric key 1, 2, 3 correspond to high, intermediate and low frequency point)
Wide/narrow switch—press the “MONI” key on the panel (Display “W” when select wide band, no
icon displays when select narrow band)
6. QT deviation
Signal source: LPF: 300Hz
A. Narrow band (N): Press the Encoder Button to adjust the Tx deviation to 0.35kHz ±50Hz
(Numeric key 1, 2, 3 correspond to high, intermediate and low frequency point)
B. Wide band (W): Press the Encoder Button to adjust the Tx deviation to 0.70kHz ±50Hz
(Numeric key 1, 2, 3 correspond to high, intermediate and low frequency point)
Wide/narrow switch—press the “MONI” key on the panel (Display “W” when select wide band, no
icon displays when select narrow band)
7. DQT deviation
Signal source: LPF: 300Hz
