UC343FH 10/23/03 2:32 PM Page 8
To Transmit
Perform a voltage Standing Wave Ratio (SWR) measurement prior to using the transmitter. A SWR ratio in excess of 2:1 may damage the transmitter.
Be sure to read and understand Part 95, FCC Rules and
Regulations before operating your transmitter.
1. Select a channel.
2. Adjust MIC GAIN.
3. When the channel is clear, press the microphone PTT switch and speak.
Multi-Function Meter
SWR Meter: Measures SWR (standing wave ratio) of antenna. Use to check antenna system or to adjust your antenna to the proper length.
To measure SWR:
1. Position meter switch to CAL.
2. Press and hold microphone PTT switch. (Transmit)
3. Calibrate meter with SWR knob by adjusting the needle to the ▼ mark.
4. Move the meter switch to the SWR position while pressing the microphone PTT switch.
5. Release the PTT switch.
A reading following two is acceptable. Higher readings indicate a problem in the antenna system. Problems may be caused by humidity, vibration, or corrosion. Check both ends of the coaxial cable connector. Also check for damage to the cable or antenna.
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