Icom IC-28H Instruction Manual page 23

e The usual position is "Р" since most repeaters operate with а
600kHz split between the receive and transmit frequencies.
e |f the "Р" position is selected, use the TUNING CONTROL to
choose your required transmit offset value.
4) Select VFO mode. 4) Push the VFO side of the VFO/MR SWITCH.
5) Push DUP SWITCH to select 5) Push the DUP SWITCH to select either the DUPLEX (—) or
DUPLEX (+). DUPLEX (+) condition.
e DUP (—): The transmit frequency is lower than the receive
frequency by the offset amount.
appears eDUP (+): The transmit frequency is higher than the receive
frequency by the offset amount.
e Neither ООР (—) nor DUP (+) displayed:
The 1C-28H is in the simplex mode with both receive and
transmit frequencies equal.
6) Push. SOL/CHK CONTROL to 6) Push the SOL/CHK CONTROL in order to monitor the transmit
check transmit frequency. frequency when operating with the duplex mode.
e This allows checking of the signal strength of your contacted
station directly without going through a repeater. If the signal
is received strongly enough directly, both stations should move
to a simplex frequency.
Ш SUBAUDIBLE ТОМЕ The supplied tone encoder allows access to repeaters which require а
ENCODER subaudible tone superimposed on the transmit signal in order to `
(IC-28H U.S.A. version) open the squelch circuit of the receiver at the repeater station.
Without this tone being present, the repeater cannot be used.
ePROGRAMMING THE SUBAUDIBLE TONE ENCODER
Example: Program 88.5Hz in subau-
dible tone memory 3.
1) Select VFO mode. 1) Push the VFO side of the VFO/MR SWITCH:
2) Push SET SWITCH to select 2) Push the SET SWITCH repeatedly until the TONE INDICATOR
subaudible tone programming appears flashing on the display.
mode.
In this mode, the 1С-28Н U.S.A. version can store a total |
-of three tone numbers in the three tone memories. The
= топе memories аге named 1", "2" and "3" and are
. designated with small numbers on the right side of the
. display. 202226 | со
МОТЕ:
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