Measuring Swr; D Spot Measurement - Icom IC-905 Advanced Manual

8
OTHER FUNCTIONS

Measuring SWR

The transceiver has an SWR meter� There are 2 ways
to measure SWR� One way is a spot measurement,
and the other is a plot measurement�
L When you measure the SWR of an antenna itself, turn
OFF any connected antenna tuner�
L In the 10 GHz band, you cannot measure the SWR�

D Spot measurement

1� Turn OFF any connected antenna tuner�
L Perform this step if an antenna tuner is connected,
and you want to measure the SWR of the antenna
itself�
2� Set the desired frequency band and a frequency
in the portion of the band that you use the most�
3� Select the RTTY mode�
4� Set the RF power�
5� Touch the TX meter several times until the SWR
meter is displayed�
"SWR" is displayed�
NOTE: 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] to transmit, and then read the
SWR on the meter�
The best match is within this range�
(1�5 or less)
L If the SWR meter indicates 1�5 or less, the antenna is
matched�
L If the SWR is a high value, adjust your antenna�
7� Release [PTT] to stop transmitting�
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