Mini-Uhf Connection; Figure 2-15. Mini-Uhf Connection - Motorola PM1200 Installation Manual

2-14
2.4.2

Mini-UHF Connection

To ensure a secure connection of an antenna cable's mini-UHF plug to a radio's mini-UHF jack, their
interlocking features must be properly engaged. If they are not properly engaged, the system will
loosen. Using a tool (pliers or wrench) is not recommended.
NOTE: Applying excessive force with a tool can cause damage to the antenna or the connector (e.g.,
stripping threads, deforming the collar or connector, or causing the connector to twist in the
housing opening and break).
The mini-UHF connector tool (Motorola part number HLN6695_) is designed to securely tighten the
antenna plug–radio jack connection without damaging either the plug or the jack.
Motorola recommends the following sequence to ensure proper attachment of the system (see
Figure 2-15).
1. Make sure that there is sufficient slack in the antenna cable.
2. Make sure that the collar of the antenna cable plug is loose and does not bind.
3. Make sure that the mini-UHF jack is tight in the radio housing.
4. Slide the collar back against the flange. Insert the antenna cable plug's pin fully into the radio
jack, but do not engage the threads.
5. Ensure that the plug's and jack's interlocking features are fully seated. Check this by grasping
the crimp on the cable jack, rotating the cable, and noting any movement. If the features are
seated correctly, there should be NO movement.
6. Finger-tighten the antenna cable plug's collar onto the radio's jack.
7. Give a final tug, by hand, to the collar, and retighten by hand as firmly as possible.
8. Slip the mini-UHF connector tool over the coaxial cable, using the gap between the tool's
legs.Then, slide the tool up onto the plug's knurled collar. Squeeze the two straight legs of the
tool firmly together between your thumb and index finger and turn clockwise (as shown) to
tighten the collar. It should take 1/4 turn or less. When you feel the tool slipping on the collar,
the connection has been properly tightened. The tool can also be used to loosen a tight collar.
NOTE: DO NOT use pliers or any other device to grip the tightening tool. It has been designed to
allow you to achieve the proper torque on the collar without overtightening. Overtightening the
collar can damage the connector and the radio.
October, 2007
Coax Conductor
Plug (Pin)
Collar Pulled
Back to Flange
Flange
Cable
Mini UHF
Jack

Figure 2-15. Mini-UHF Connection

Standard Configurations: Antenna Installation
6880309U11