_____________________________________________ Section 2: Installation
8197 Instruction Manual
Page 2-5
FIGURE 2-4 MODEL 8227 INLINE AMPLIFIER
Each Model 8227 includes two clamp type male N connectors. These
connectors can be used to splice the Model 8227 into the antenna coax. The
connectors are compatible with LMR 400 type coax such as Spectracom
CAL7xxx or Belden 8267. Refer to Figure 2-3 for connector assembly
instructions.
A five-foot long coaxial cable is also provided with each Model 8227. This cable
connects the amplifier to the surge suppressor. This cable is rated for indoor
usage only.
Refer to Figure 2-5 for Model 8227 installation guidelines. The cable lengths
shown in Figure 2-5 represent Spectracom CAL7xxx cable. The equivalent cable
loss expressed in dB, is provided for use with other cables.
Place the inline amplifier within 100 feet (10 dB cable loss) of the antenna to
optimize the signal to noise ratio. Whenever possible, install the inline amplifier
indoors after the impulse suppressor using the supplied 5-foot cable. The
amplifier can be installed outdoors, providing care is taken to weatherproof the
connections. Due to unique system dynamics of the antenna, amplifier and
receiver, a minimum of cable length of 200 feet (20 dB cable loss) is required to
prevent overloading the receiver.
MODEL 8195A
MODEL 8227
MODEL 8226
MODEL 8225
INSTALL IMPULSE SUPPRESSOR
BETWEEN THE ANTENNA AND
AMPLIFIER WHENEVER POSSIBLE.
100' MAXIMUM
10 dB MAXIMUM
200’ MINIMUM, 400' MAXIMUM
(20 dB MINIMUM, 40 dB MAXIMUM
5 FOOT CABLE INCLUDED
FIGURE 2-5 CABLE GUIDELINES
