Multi-Function Meter - Uniden PC78XL User Manual

pc78xl.qxd 2/25/99
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 it to check
the 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 the
SWR CAL control 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.
RF Meter : Measures RF Output Power for transmitter. To use, position the
meter switch at S/RF . Press microphone PTT switch to read transmitting
power.
S-Meter : Measures incoming signal strength. To use, position the meter
switch at S/RF . The meter swings to indicate signal strength.
i.e. S 3, S 5, S 7 . . .
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