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PHDQ 8008 TSR
• Press the
button.
—> The "Selecting channel / frequency setting" – "
OUTPUT
" menu is acti-
vated.
Selecting channel / frequency setting
In this menu, you can choose the channel or frequen cy setting for the adjust
-
ment of the HF output. The channel setting covers the range of channels S21
… C69, the frequency setting covers the range from 42.0 MHz to 860.0 MHz.
The QAM signal is normally transmitted with a bandwidth of 8 MHz. This
means that you can only use the channel centre frequency of the existing
channel raster in the range of channels S21 … C69 (frequency raster 8 MHz).
The CCIR channel raster is 7 MHz in the range of the lower frequency bands
(channels C2 … S20). Therefore the frequency setting is used here. If one uses
the existing channel raster of 7 MHz in these channel ranges, this will result in
interference (overlapping) with the 8 MHz QAM signal packages, thus caus-
ing transmission problems.
For programming in these channel ranges and in the frequency ranges below
them, we recommend starting with channel S21 / 306 MHz going back in
steps of 8 MHz (see frequency table on page 28), or reducing the bandwidth
of the QAM output signal by removing stations using the software
PSW 1000
.
Bx 4A
Freq.
OUTPUT
• Use
to select channel setting "
Channel
" or frequency setting "
Freq.
".
• Press the
button.
—> The "Setting the output channel" or "Setting the output frequency" –
"
OUTPUT
" menu is activated.
