Icom IC-7000 - Manual (Page 103)

DPlot measurement
94
6
FUNCTIONS FOR TRANSMIT
6
The IC-7000 has a built-in circuit for measuring an-
tenna SWR—no external equipment or special adjust-
ments are necessary.
The IC-7000 can measure SWR in 2 ways—spot mea-
surement and plot measurement.
qSelect CW or RTTY operation with [MODE].
wConfirm that the out put power is over 30 W.
eSelect the menu S - 1.
rPush [F-3 MET] one or more times to select the
SWR meter.
tKey down or push [PTT] to transmit; then read the
actual SWR from the meter.
➠) 1.5 well matched antenna
➠> 1.5 check antenna or cable connection, etc.
[MENU/GRP] [F-3]
The best match is in this range.
SWR 1 1.5 2 - 3
'
Plot measurement allows you to measure the SWR
over an entire band.
qConfirm that the output p ower is over 30 W.
wSet the center frequency for the SWR to be mea-
sured.
eSelect the menu G - 3 (SWR meter).
rPush and hold [F-4
STEP
] for 1 sec. one or more
times to select the desired measuring step from 10,
50, 100 and 500 kHz.
tPush [F-2] or [F-3] one or more times to select the
desired number of measuring steps from 3, 5, 7, 9,
11, and 13 steps.
yPush [F-1] to start the measuring.
u
Push and hold [PTT] on the microphone to mea-
sure the SWR.
• Frequency marker, “ ∫,” appears below SWR graph.
• RTTY mode is automatically selected.
i When releasing [PTT], the frequency marker and
frequency indication move to the next frequency to
be measured.
o Repeat steps u and i to measure SWR over the
entire frequency range.
!0 When the measured SWR is less than 1.5:1, the
antenna is well matched with the transceiver in the
measured frequency range.
Push [F-1] to start
mesuring.
Push [F-2] or [F-3] to select number of
SWR mesuring steps.
Frequency marker appears and moves
after measurement.
Push [F-4] to Select
SWR mesuring steps.
• Measuring (after pushing [F1])
The antenna is well matched in this range
1.0 : 1
1.5 : 1
2.0 : 1
3.0 : 1
4.0 : 1
■Measuring SWR
DSpot measurement
Menu selection (Example: S-1)
• Push [MENU/GRP] for 1 sec. once or twice to select
the menu group S. Selection from: M, S or G(Graphic)
• Push [MENU/GRP] momentarily one or more times to
select the menu S - 1. Selection from: S - 1 , S - 2 or S - 3