Tait TM9100 Installation Manual

Also see for TM9100: Installation guide Service manual User guide Installation guide Safety information

Tait TM9100 Installation Manual Manual pdf 26 page image

TM9100 Installation Guide Installing the Radio 27© Tait Electronics Limited August 20052.10 Checking the InstallationWarning!! Danger of fire. The radio’s protection mechanisms relyon the correct fuses on both the negative and positivepower supply leads being present. Failure to fit thecorrect fuses may result in fire or damage to the radio.The 40W/50W radios use 20A fuses; the 25W radiosuse 10A fuses. For part numbers of the fuses, refer to“Checking the Equipment for Completeness” onpage 11.1. Insert the fuses into the power leads.2. Switch on the radio to confirm that it is operational, but donot transmit.3. Connect an in-line power meter between the radio and the antenna.4. Transmit and measure the forward and reflected power levels.Less than 4% of the forward power should be reflected. If this is notachieved, check the installation, including the antenna length.5. Start reducing the length of the antenna in steps of 0.1 inches to0.2 inches (2 to 5 mm). Measure the power levels at each step.Important Some antennas are pre-tuned and must not be cut. Checkwith the manufacturers’ instructions.6. Once the reflected power levels are within tolerance, make a call toanother party on the radio.

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