2)
SWR Formulas and Calculations
VSWR can be calculated from various parameters. By definition, VSWR is given as ratio of maximum voltage on the line to the minimum voltage.
The same can be expressed in terms of forward and reflected wave voltages.
*Power Watt - Testing frequency: VHF145.000MHz / UHF430.000MHz
*Connect antenna to test power is Inaccurate .
*Be careful not to connect dummy load for a long time as damage can result to the dummy load
*Be careful not to connect inappropriate antenna for a long time as damage can result to the walkie talkie
*Shut down when not in use to avoid battery damage.
*Please use correct dummy load , High power output will damage the dummy load.
*Not for the DMR digital radio.
*Please use the watt of dummy load is more than the test RF power to test.
Pic.4
1) Select SWR MODE :
2) Place the antenna vertically, make sure
there is no obstacle nearby
3) Please touch the metal box of the SWR meter
with your hands
4) Press PTT button on the walkie-talkie
Measure S.W.R. from antenna
1) Select Power MODE :
2)Please make sure the dummy Load
is correct on meter
3)Please press PTT TX on the walkie-talkie
Pic.3
Measure RF Power
4. Start-up Image:
You can choose your Start-up Image above 5 mode. Choosing one fo the mode 1~-5 and
then long press red button to Power Off until display show "SAVE"
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