Icom IC-718 Support Question
Icom IC-718 Support Question
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Question posted by ddennisberger on March 19th, 2016
Icom Ic-718 Switches Frequencies When Keying In Cw Mode
I was attempting to tune my 12 meter antenna and was using the built-in SWR meter. I set the frequency to 24.960 MHz and entered the CW mode. Power output was set to 35 Watts. When I keyed the mike, the frequency jumped to 28.5 MHz (10 Meter). Why did it do this?
Current Answers
Related Icom IC-718 Manual Pages
Instruction Manual - Page 4
...)
enter the initial set mode items, etc. i LOCK SWITCH [LOCK] (p. 19)
e HEADPHONE JACK [PHONES] (p. 11) Accepts headphones (8 Ω). • When headphones are connected, the internal speaker
Push momentarily to turn the preamp ON or OFF.
Changes the displayed frequency, selects quick/ini- 2 PANEL DESCRIPTION
s Front panel
Speaker Function Display
@1 @0 !9 !8
!7
IC-718
MODE FIL...
Instruction Manual - Page 5
...• Push [MODE] for 1 sec. to manually tune the tuner. • An optional antenna tuner must be connected. ➥ Push for the selected operating mode.
@1 MODE SWITCHES [LSB/USB]/[CW/CW- during CW or RTTY mode, to toggle the meter function; (p. 26) • PO: indicates the relative RF output power. • ALC: Indicates ALC level. • SWR: indicates the SWR over the transmission...
Instruction Manual - Page 8
... does not function.
2 PANEL DESCRIPTION
s Rear panel
q
w
e
13 9 10 11 12 5678 1234
!0
oi u y
tr
q ANTENNA TERMINAL [ANT] (p. 10) Connects a 50 Ω antenna with a personal computer for remote operation of a non-Icom linear amplifier. r CI-V REMOTE CONTROL JACK [REMOTE] (p. 57) Designed for use with a PL-259 connector and a 50 Ω coaxial cable. control...
Instruction Manual - Page 12
...-20
IC-718
MODE FIL
TS
PWR AF RF/SQL RIT SHIFT MIC
PHONES LOCK
1 2 3 V/M
A=B
A/B
4 5 6 MW
M - CL
˛
M V
7 8 9 SPL
SCN
VOX
. 0 NR
ANF
F-INP ENT
NB COMP SET P.AMP ATT TUNER
∫
CH
DN UP √
• Rear panel
ANTENNA (p. 56) [Example]: 1.8-30 MHz bands
AH-710
approx. 24.5 m; 80.3 ft
DC POWER SUPPLY PS-85
GROUND (p. 9)
Use the...
Instruction Manual - Page 13
... modulation signal can be input from [MIC]. (p. 33)
IC-718
MODE FIL
TS
PWR AF RF/SQL RIT SHIFT MIC
PHONES LOCK
1 2 3 V/M
A=B
A/B
4 5 6 MW
M -
ACC SOCKETS (p. 7)
[SEND], [ALC] (p. 14) Used for computer control and transceive operation. CL
∫
M V
7 8 9 SPL
SCN
VOX
. 0 NR
ANF
F-INP ENT
NB COMP SET P.AMP ATT TUNER
∫
CH
DN UP ∫...
Instruction Manual - Page 14
... operating the IC-718 with AC power.
CONNECTING PS-85 DC POWER SUPPLY
CAUTION: Before connecting the DC power
cable, check the following important items. Make
sure:
• The [POWER] switch is OFF.
• Output voltage of the power source is 12-15 V
when you use a non-Icom power supply.
• DC power cable polarity is correct. Crimp
12 V battery
Supplied DC power cable
Solder...
Instruction Manual - Page 18
.... Memory channel 1 is selected. The IC-718 VFO can also change the frequency with the tuning dial and select the operating mode with the [MODE] switch or call up a desired frequency to an oscillator.
If the frequency or operating mode is selected from another VFO or memory mode, the last-used frequency and operating mode for split frequency opration. When the VFO is changed . Another...
Instruction Manual - Page 19
... set the transceiver to enter the frequency dig- q Push [F-INP/ENT], then push the numeral keys on the keypad. r Push [F-INP/ENT] to select the desired ham band.
• For general coverage receiver use The IC-718 has a general coverage receiver band.
e Push the numeral keys to the general coverage frequency.
its below 1 MHz. • If a key is mistakenly pushed, push [SET...
Instruction Manual - Page 20
... the tuning dial to suit your operating requirements.
4 FREQUENCY SETTING
D Band stacking resister
The band stacking register automatically stores the last frequency and mode used for each band. BAND 1.9 MHz 3.5 MHz 7 MHz 10 MHz 14 MHz General
BAND 1.91000 MHz 3.55000 MHz 7.05000 MHz 10.12000 MHz 14.10000 MHz 15.10000 MHz
BAND CW LSB LSB CW USB USB
BAND 18 MHz 21 MHz 24 MHz 28 MHz 29 MHz...
Instruction Manual - Page 22
... the 12 o'clock position since this sets RF gain to the max. S-meter squelch threshold
S-meter squelch
Shallow
Deep
• When set as the [SQL] control
Squelch is open . Note: If desired mode cannot be received. The recommended position for RF gain is received. The squelch is available for 1 sec.
s RF gain and Squelch
The IC-718 uses the...
Instruction Manual - Page 29
..., your transmited voice may be distorted.
˛
[COMP] switch
ALC zone Adjust [COMP GAIN] so that the ALC meter does not peak past the ALC zone. r Select "VOX Delay" in quick set mode.
• Push [SET] for 1 sec. 5 RECEIVE AND TRANSMIT
˛ ˛
ï Microphone compressor
IC-718 has a built-in the range of the ALC zone. •...
Instruction Manual - Page 31
.... The tuner and transceiver will tune all frequencies 3.5 to
turn power OFF. NEVER operate the AH-4 when it is required for each frequency.
This function removes the "push and hold [TUNER] for AH-4 installa- AH-4 setting example: For mobile operation
Optional AH-2b antenna element
For outdoor operation Long wire
AH-4
IC-718
MODE FILTER TS
PWR AF SQL...
Instruction Manual - Page 32
.... • Key down or push [PTT] to select the SWR
meter. w Push [A/B] to select VFO A and set the frequency to transmit and receive on two different frequencies.
e Push [SPL] to turn the split frequency operation ON. • Split operation is over 30 W.
s SWR
The IC-718 has a built-in circuit of setting 7.057 MHz, CW mode in VFO A (for receive) and 7.025 MHz, CW mode in VFO...
Instruction Manual - Page 33
... to enter quick set mode setting (p. 45) : normal : reverse
: off
Microphone
: UP/DN key
ï CW operation
q Connect a paddle or straight key as a foot switch;
s Function for CW
ï Connection for CW
13 9 10 11 12 5678 1234
[ELEC KEY]
For no break-in r Set the CW delay time when semi break-in operation is selected. (See p. 43) • Push [SET] for 1 sec. or use the...
Instruction Manual - Page 34
... set mode.
• Setting the electronic keyer q Push [MODE] one or more times until "KEY SPD" appears, then rotate the main dial to select the desired weight. • Key weight can be adjusted with out changing the operating frequency. w Push [∫ UP]/[√ DN] one or more times to enter initial set mode.
w While pushing and holding [SET], push [POWER]
to select CW
mode...
Instruction Manual - Page 43
... dial to turn
power OFF. u Push [PWR] to set mode operation
q While power is ON, push [SET] for the selected item. The IC-718 has 2 separate set modes: quick set mode and initial set mode are now ef- e Push [UP Y] or [Z DN] to turn power ON again.
• The conditions selection in intial set mode. to select the desired item. 8 SET MODE
s General
Set mode is used for the selected...
Instruction Manual - Page 49
... (W/N) key combination on operating mode independently. The default is oF (off ).
• Filter select (Wide/Narrow)
When an optional IF filter is necessary, otherwise the filters cannot be set to "on .
• CI-V 731 mode
When connecting the IC-718 to other Icom HF transceivers or receivers. The IC-718's address is selected, changing the frequency, operating mode, etc...
Instruction Manual - Page 53
...• Frequency coverage : 1.9 - 54 MHz
• Input impedance : 50 Ω
• Maximum input
: 120 W
power
• Minimum tuning : 8 W
power
• Matching impedance : 16.7-150 Ω (HF band)
range
20 -125 Ω (50 MHz band)
• Tuning accuracy : Less than SWR 1.5:1
• Insertion loss
: Less than 1.5:1. S1
THROUGH INHIBIT The tuner tunes the antenna even when...
Instruction Manual - Page 56
...
D General
• Frequency coverage : Receive 0.03-29.999999 MHz*1 Transmit 1.800- 1.999999 MHz*2 3.500- 3.999999 MHz*2 7.000- 7.300000 MHz 10.100-10.150000 MH 14.000-14.350000 MHz 18.068-18.168000 MHz 21.000-21.450000 MHz 24.890-24.990000 MHz 28.000-29.700000 MHz
*1Guaranteed range: 0.5-29.999999 MHz *2Varies according to version
• Mode
: USB, LSB, CW, RTTY, AM...
Instruction Manual - Page 59
See p. 32 for setting the CI-V condition using set mode.
• Data format
The CI-V system can be operated using the following functions of the transceiver. ...command is added for frequency or memory number entry End of message code (fixed) Preamble code (fixed) Controller's default address Transceiver's default address
NG code (fixed) End of message code (fixed)
IC-718 TO CONTROLLER
q ...
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