Icom IC-7760 Advanced Manual page 103

11
OTHER FUNCTIONS
Measuring SWR
D Plot measurement
You can measure the SWR over the entire set
frequency range.
1. Set the desired frequency band.
2. Select the antenna connector to which the
antenna you want to measure is connected.
3. Set the RF power to 30 W or more in the Multi-
function menu.
4. Display the SWR GRAPH screen.
» SWR
MENU
5. Set the center frequency for the SWR to measure.
(Example: 14.080.00)
6. Touch [SPAN] several times to set the measuring
span, or touch [BAR] several times to set the
number of graph bars.
L You can select between ±20 kHz, ±50 kHz, ±100 kHz,
±200 kHz, ±500 kHz, ±1 MHz, and ±2 MHz measuring
spans.
L You can select between 3, 5, 7, 9, 11, and 13 graph
bars.
7. Touch to start measuring.
• Displays the frequency marker "▲" and the
measurement frequency.
Center frequency Number of
graph bars
Measuring span
NOTE: Before transmitting, monitor the operating
frequency to make sure you will not cause
interference to other stations on the same frequency.
8. Hold down [PTT] to transmit.
• The bar graph displays the SWR.
L When the Break-in function is ON in the CW mode,
you can use a straight key or paddle to transmit.
Measuring SWR
9. Release [PTT] to stop transmitting.
L When using a straight key or paddle, stop keying.
10. Repeat steps 8 and 9 to measure the SWR over
the entire frequency range.
The center frequency is displayed
after the measurement
TIP:
• Rotate
MAIN DIAL
the current transmit frequency.
• "<<" (low) or ">>" (high) is displayed when the
transmitted frequency is out of the displayed range.
• Touch [RECALL] for 1 second to move the frequency
marker "▲" back to the center frequency.
• Touch the bar graph to delete the measured SWR.
11-5
Frequency marker
Measurement frequency
The best match is within this range.
to move the frequency marker "▲" to
(1.5 or less)