Icom Ic-207h Vhf Uhf Tranciever Instruction Manual

							13WIRELESS OPERATION
56
DKeypad
KEYFUNCTIONSECONDARY FUNCTION (After )FUNCOTHER FUNCTIONS
Calls up a call channel.No secondary function.
•After :
Input the appropriate digit
for frequency or memory
channel selection.
•After :
Transmit the appropriate
DTMF code.
•After :
Transmit the appropriate
DTMF memory contents.
[0] to [9], [A] to [D] can be
used for DTMF memory.
DTMF
MEMO
DTMF
KEY
D ENT DEMO
Selects memory mode.No secondary function.
Selects VFO mode.Turns the one-touch PTT function ON
and OFF.
Selects high output power.No secondary function.
Selects mid-high output power.No secondary function.
Selects low output power.Turns the DTMF memory function ON.
Selects –duplex.Turns the subaudible tone encoder ON.
Selects + duplex.Turns the pocket beep function ON.
Selects simplex.Turns the tone squelch function ON.
Mutes audio signals.Starts and stops a priority watch.
AFC
CALL
1
AFC-OFF
2 MR
PTT-M
3 VFO
PGR
4 HIGH
5 C-SQL
MID
6 DTMF
LOW
7 DUP– TONE
8 DUP+ T-SQLS
9 SIMP T-SQL
0 MUTE PRIO 
						

							13WIRELESS OPERATION
57
KEYFUNCTIONSECONDARY FUNCTION (After )FUNCOTHER FUNCTIONS
Clears a digit before entry.
Cancels the scan, priority watch, or
DTMF memory function.Writes the VFO contents into the memory
channel or call channel.
Advances the memory channel number
when continuously pushed after program-
ming is completed.
•After :
Transmit the appropriate
DTMF code.
[B
MONI]
Transmits a 1750 Hz tone
call signal for 0.5 sec.
[A
SQL]
Transmits a 1750 Hz tone
call signal while pushing.DTMF
KEYEnters set mode and advances the set
mode selection order.Turns the DTMF memory function OFF.
Decreases the set mode selection order
after entering set mode.
NOTE:
The IC-207H has no voice synthesizer
function.Turns the subaudible tone encoder,
pocket beep or tone squelch OFF.
Sets the keypad for numeral input.Enters and exits demonstration mode.
Toggles between opening and closing
the squelch.Starts and stops scanning.
Selects 1 of the 4 preset squelch levels.Locks all the keys on the microphone key-
pad.
MW
A CLR
B D-OFF
SET
C SPCH T-OFF
D ENT DEMO
M
SCAN
MONI
# SQL REAR LOCK 
						

							13WIRELESS OPERATION
58
Microphone
address
The transceiver has 8 possible microphone addresses (in-
cluding OFF) to help prevent interference from other HM-90
WIRELESS MICROPHONES. Set both the microphone address
and microphone dip switch to the same value as follows.
NOTE:When the supplied microphone is connected, the
transceiver rejects control signals from the HM-90 even
when the microphone address is matched.
DMicrophone address
➀Push [PWR] to turn power OFF.
➁While pushing [SET], turn power ON to enter initial set
mode.
➂Push [SET] a few times to
select the “Adr” display as
shown at right.
➃Rotate the tuning dial to
set the microphone ad-
dress to 0–7 or to turn the microphone control OFF.
•When “Adr-oF” is selected, the transceiver rejects all control sig-
nals from the HM-90.
➄Push [PWR] momentarily to exit initial set mode.
USINGINITIAL SET MODE
The display shows the mi-
crophone address is set to 2.
DMicrophone dip switch
➀Remove the switch cover from the microphone rear panel.
➁Set the microphone dip switch and the microphone ad-
dress to the same value as shown below.
➂Replace the switch cover.
MICROPHONE
ADDRESSDIP SWITCH
S1–1S1–2S1–3
Adr-0OFFOFFOFF
Adr-1 (default)ONOFFOFF
Adr-2OFFONOFF
Adr-3ONONOFF
Adr-4OFFOFFON
Adr-5ONOFFON
Adr-6OFFONON
Adr-7ONONON
LOCK
AFC AFC-OFF PTT-M MW
PGR CALL
123A
456BMR VFO CLR
C-SQL DTMF D-OFF
HIGH MID LOW SET
Dip switch
ON
OFF
1  2  3
(S1)
Switch cover 
						

							OTHER FUNCTIONS14
59
Beep tones on/off
You can select silent operation by turning beep tones OFF or
you can select to have confirmation beeps sound at the push
of a switch by turning beep tones ON.
➀Push [PWR] to turn power OFF.
➁While pushing [SET], turn power ON to enter initial set
mode.
➂Push [SET] one or more times until “bEP” appears.
•Pushing [MONI] reverses the order of selection.
➃Rotate the tuning dial to
select the condition.
•“bEP-oF”: Beep tones are
turned OFF.
•“bEP-on”: Beep tones are
turned ON.
➄Push [PWR] momentarily to exit initial set mode.
Time-out timer
To prevent accidental prolonged transmission with the one-
touch PTT function, etc., the transceiver has a time-out timer.
This timer cuts a transmission OFF after 3, 5, 15 or 30 min. of
continuous transmission. This timer can be cancelled (de-
fault).
Approx. 10 sec. before the time-out timer passes, the trans-
ceiver emits a beep tone as a warning.
➀Push [PWR] to turn power OFF.
➁While pushing [SET], turn power ON to enter initial set
mode.
➂Push [SET] one or more times until “tot” appears.
•Pushing [MONI] reverses the order of selection.
➃Rotate the tuning dial to select the desired time-out time or
turn the timer OFF (“oF”).
➄Push [PWR] momentarily to exit initial set mode.
USINGINITIAL SET MODEUSINGINITIAL SET MODE
The display shows that the 5 
min. timer is selected.The display shows that the 
time-out timer is cancelled.
TOT
The display shows that the 
beep tones are turned ON. 
						

							14OTHER FUNCTIONS
60
Auto power-off
The auto power-off function conveniently turns the transceiver
power OFF after a preset time in which no operations are per-
formed. In this way, when you forget to turn the power OFF,
the transceiver automatically turns itself OFF, thereby con-
serving battery power.
The time can be set to 30 min., 1 hr., 2 hrs. or turned OFF.
The selected time is retained even when the transceiver is
turned OFF via the auto power-off function. To cancel the
function, select “oF” in step ➃below.
➀Push [PWR] to turn power OFF.
➁While pushing [SET], turn power ON to enter initial set
mode.
➂Push [SET] one or more times until “PoF” appears.
•Pushing [MONI] reverses the order of selection.
➃Rotate the tuning dial to
select the desired auto
power-off time or turn the
timer OFF (“oF”).
•“AO” appears when an auto
power-off time is set.
➄Push [PWR] momentarily to exit initial set mode.
Cooling fan
setting
The transceiver has a heatsink and cooling fan to radiate
heat. The cooling fan automatically turns ON while transmit-
ting and remains ON for 2 min. after transmitting. The cool-
ing fan can be activated continuously, if desired.
➀Push [PWR] to turn power OFF.
➁While pushing [SET], turn power ON to enter initial set
mode.
➂Push [SET] one or more times until “FA n” appears.
•Pushing [MONI] reverses the order of selection.
➃Rotate the tuning dial to set the cooling fan to automatic
(“At”) or continuous (“on”).
➄Push [PWR] momentarily to exit initial set mode.
USINGINITIAL SET MODEUSINGINITIAL SET MODE
The display shows that the 
30 min. timer is selected.
AO
The display shows that the 
cooling fan is set for automatic 
operation.The display shows that the 
cooling fan is set for continuous 
operation. 
						

							14OTHER FUNCTIONS
61
Microphone [F-1]/[F-2] keys
Switches on the transceiver’s front panel can be assigned to
the microphone’s [F-1] and [F-2] keys.
➀Turn power OFF.
➁While pushing the desired switch on the transceiver and
[F-1] or [F-2] on the microphone, turn power ON.
•The switches’ function is programmed into the key ([F-1] or [F-2]).
•Default setting
The following functions are assigned to the [F-1]/[F-2] keys
when first applying power or after CPU resetting:
[F-1]: selects output power; push and hold to select duplex
setting
[F-2]: selects a tone function or none at all; push and hold to
start/stop tone scan
Display dimmer
Adjust to suit lighting conditions and personal preference.
➀Push and hold [SET] one or more times until “d-1”–“d4” ap-
pears as follows.
•Pushing [MONI] reverses the order of selection.
➁Rotate the tuning dial to
set the desired intensity.
•Intensity can be set from “d1”
(dark) to “d4” (bright).
➂Push [V/MHz] to return to
normal operation.
USINGSET MODE
HI19
5
The display shows the display 
backlighting set to brightest. 
						

							14OTHER FUNCTIONS
62
Squelch delay
During operation, received signal strength often fluctuates.
This can result in annoying repeated opening and closing of
the squelch during reception of the same signal. The IC-207H
has a built-in squelch delay function which helps prevent this.
When both stations are operating from a fixed location, this
function should be set to “short” e.g. packet operation.
➀Push [PWR] to turn power OFF.
➁While pushing [SET], turn power ON to enter initial set
mode.
➂Push [SET] one or more times until “Sqt” appears.
•Pushing [MONI] reverses the order of selection.
➃Rotate the tuning dial to
set the squelch delay to
“L” (long) or “S” (short).
➄Push [PWR] momentarily
to exit initial set mode.
USINGINITIAL SET MODE
The display shows the squelch 
delay function is set to short.
Demonstration display
A demonstration function is available at power ON. This func-
tion gives you a quick visual introduction to the function dis-
play indicators.
➀While pushing [BAND], push [PWR] to turn power ON.
•The transceiver cycles through a visual tour of the function dis-
play indicators.
➁Push any switch to exit demonstration mode and enter the
normal operating condition temporarily.
NOTE:The transceiver automatically returns to demon-
stration mode after 2 min. in which no operations are per-
formed. To deactivate the demonstration display
permanently, turn power OFF, then while pushing [BAND],
turn power ON again. 
						

							14OTHER FUNCTIONS
63
Packet operation
DData speed
For packet operation the transceiver can be set to one of two
data speeds: 1200 bps (default) or 9600 bps.
➀Push [PWR] to turn power OFF.
➁While pushing [SET], turn power ON to enter initial set
mode.
➂Push [SET] one or more times until “bPS” appears.
•Pushing [MONI] reverses the order of selection.
➃Rotate the tuning dial to
select the desired data
speed.
➄Push [PWR] momentarily to exit initial set mode.
USINGINITIAL SET MODE
The display shows the data 
speed set to 1200 bps.
The display shows the data 
speed set to 9600 bps.
NOTE:
For 1200 bps operation—
•Disconnect the microphone plug from the microphone
connector during data transmission, otherwise the data
signal and voice signal are simultaneously transmitted.
For 9600 bps operation—
•When the transceiver is set for 9600 bps data transmis-
sion in INTIAL SET MODE, the microphone signal is au-
tomatically cut. Therefore, it is not necessary to
disconnect the microphone plug from the connector in
this case.
•When pushing [PTT] during data transmission, data
transmission is interrupted and voice signals have prior-
ity. 
						

							NOTE:
•Read the instructions supplied with your TNC carefully
before attempting packet operation with the IC-207H.
•Pin tAF OUT is for 1200 bps operation only. This pin
cannot be used for 9600 bps operation.
•Over modulation may degrade signal quality. If you find
that many transmissions are failing, re-adjust the modu-
lation level.
14OTHER FUNCTIONS
64
D1200 bps packet operation
qConnect the IC-207H and a TNC as illustrated below.
wSet the TNC for transmit.
eSet transmit delay on the TNC to 30–50.
rAdjust the TNC frequency deviation if necessary.
•When using a deviation meter:
Adjust the output of the TNC so that frequency deviation is in the
range ± 3 to 4 kHz.
•When NOT using a deviation meter:
A receiver or transceiver is needed to monitor the transmission—
compare the received audio output level when receiving a TNC
modulated signal with high level voice signals using the micro-
phone. Then adjust the TNC modulated signal to a lower level
than the voice modulated signal.
D ATA  I N
SQL PTT RX AUDIO GND TX AUDIO TNC SIDE
GND
PTTP
SQ
AF OUT 
						

							14OTHER FUNCTIONS
65NOTE:
•When using the PTTP terminal for packet operation, no
voice signals are transmitted from the microphone.
•When pushing [PTT] during data transmission, data
transmission is interrupted and the voice signal takes pri-
ority.
•Read the instructions supplied with your TNC carefully
before attempting packet operation with the IC-207H.
•Pin rDATA OUT is for 9600 bps operation only. This pin
cannot be used for 1200 bps operation.
D9600 bps high speed packet operation
The IC-207H supports 2 modes of 9600 bps packet opera-
tion: G3RUH and GMSK.
qConnect the IC-207H and a TNC as illustrated below.
wG3RUH mode can handle 16 kinds of modulated wave
forms in order to maintain a communication link.
eSet the TNC’s TX DELAY to 30–50.
rAdjust the TNC frequency deviation if necessary (see page
at right).
D ATA  I N
SQL PTT RX AUDIO GND TX AUDIO TNC SIDE
GND
PTTP
SQ DATA OUT