To Transmit; Multi-Function Meter - Uniden PC78LTW User Manual

pc78ltw.qxd 2/24/99
T T o o T T r r a a n n s s m m i i t t
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.
M M u u l l t t i i - - F F u u n n c c t t i i o o n n M M e e t t e e r r
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 microphone PTT
switch. (Transmit)
3. Calibrate meter with
SWR CAL knob by adjusting
the needle to the
4. Move the meter switch to
the SWR position while pressing
the microphone PTT switch.
A reading below 2 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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