Japan Radio Co. JSS-2150, Service Manual

Page: 80 / 160

SETUP AND ADJUSTMENT
2-20
2.2.5.9 Setting the receiving conditions
Adjust the receiver.
z
RX antenna
Split and use the WKR antenna: WKR/RX
Use the TX antenna in common: TX
Note: The factory default is WKR/RX.
When connecting a receiving antenna
to the RX ANT connector, the antenna
is connected to the receiver by the
hardware, regardless of the above
setting.
z
RX busy
When making routine calls or safety test
calls with DSC, it detects call frequency
(DSC) busy at a receiving signal strength
set between -20 to +78 dBuV.
Note: The factory default is +40(dBuV).
Additionally it can be set to off to
ignore the channel busy. But normally
set any value here.
z
RF through
Use a wide band BPF (1.6 - 30MHz): ON
Use a normal BPF for each band: OFF
Note: The factory default is OFF.
If there is a external system that
uses a common receiving antenna,
when scanning using a normal BPF
that system may experience
interference from noise of BPF
switching in response to the
frequency. In this case, turning this
setting on and applying a wide band
BPF (1.6 to 30 MHz) can prevent
switching noise.
z
AGC setting
Set to the normal characteristic: Normal
Set to the flat characteristic: Flat
Note: The factory default is Normal.