Icom IC-7610 Instruction Manual advanced - Page 87

Measuring SWR, Before transmitting

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11. OTHER FUNCTIONS Measuring SWR The transceiver has a high-performance SWR meter. This meter displays a stable measurement in real time, even if the transmit output power varies frequently. You can measure the SWR of an antenna itself through the internal antenna tuner. 1. Select the RTTY mode. 2. Set the frequency band for the antenna. 3. Touch the meter indicator several times to display the SWR meter. LYou can also display the SWR on the Multi-function meter by touching the meter indicator for 1 second. SWR meter display Before transmitting, monitor the operating frequency to make sure you will not cause interference to other stations on the same frequency. 6. Hold down [PTT] (or push TRANSMIT ) to transmit. The best match is within this range. (1.5 or less) 4. Select the antenna connector that the antenna that you want to measure is connected to. 5. Push MULTI to adjust the RF POWER to more than 30 W in the Multi-function menu. LIf the SWR meter indicates 1.5 or less, the antenna is matched. LIf the measured SWR is more than 1.5:1, you need to match the antenna with the transceiver. 7. After reading the SWR, release [PTT] (or push TRANSMIT ) to return to receive. 81

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81
11. OTHER FUNCTIONS
Measuring SWR
The transceiver has a high-performance SWR meter.
This meter displays a stable measurement in real
time, even if the transmit output power varies
frequently. You can measure the SWR of an antenna
itself through the internal antenna tuner.
1.
Select the RTTY mode.
2.
Set the frequency band for the antenna.
3.
Touch the meter indicator several times to display
the SWR meter.
L
You can also display the SWR on the Multi-function
meter by touching the meter indicator for 1 second.
SWR meter display
4.
Select the antenna connector that the antenna
that you want to measure is connected to.
5. Push
MULTI
to adjust the RF POWER to more
than 30 W in the Multi-function menu.
Before transmitting
, monitor the operating
frequency to make sure you will not cause
interference to other stations on the same frequency.
6.
Hold down [PTT] (or push
TRANSMIT
) to transmit.
L
If the SWR meter indicates 1.5 or less, the
antenna is matched.
L
If the measured SWR is more than 1.5:1, you
need to match the antenna with the transceiver.
7.
After reading the SWR, release [PTT] (or push
TRANSMIT
) to return to receive.
The best match is within this range. (1.5 or less)