![Icom IC-910H [5/86] 2 sub band indicator sub lights green while the squelch is opened or a signal is received on the sub band lights red while trans mitting in satellite operation](/img/pdf.png)
Icom IC-910H [5/86] 2 sub band indicator sub lights green while the squelch is opened or a signal is received on the sub band lights red while trans mitting in satellite operation
![Icom IC-910H [5/86] 2 sub band indicator sub lights green while the squelch is opened or a signal is received on the sub band lights red while trans mitting in satellite operation](/views2/1074431/page5/bg5.png)
o MAIN BAND INDICATOR [MAIN]
➥ Lights green while the squelch is opened or a sig-
nal is received on the MAIN band; lights red while
transmitting on the MAIN band.
•While transmitting, the indicator also shows ALC con-
dition. Brightness increases more than usual when
the ALC function is activated.
➥ Flashes when an off-frequency signal is received
and the FM center detector is activated. (p. 28)
!0 RF GAIN CONTROL/SQUELCH CONTROL
[RF/SQL] (outer control)
Adjusts the RF gain and squelch threshold level for
the MAIN band. The squelch removes noise output
from the speaker (closed condition) when no signal
is received.
•The squelch is particularly effective for FM. It is also
available for other modes.
•12 to 13 o’clock position is recommended for any setting
of the [RF/SQL] control.
•The squelch threshold position for SSB/CW mode can
be set from 12 or 13 o’clock position in SSB/CW set
mode. (p. 62)
•The control can be set as ‘Auto’ (RF gain control in SSB
and CW; squelch control in FM) or squelch control (RF
gain is fixed at maximum) in set mode as follows. (p. 56)
• When setting as RF gain/squelch control
•When functioning as RF gain control
(Squelch is fixed open; SSB, CW only)
•When functioning as squelch control
(RF gain is fixed at maximum.)
!1 AF CONTROL [AF] (inner control)
Varies the audio output level from the speaker for
the MAIN band.
!2 SUB BAND INDICATOR [SUB]
Lights green while the squelch is opened or a signal
is received on the SUB band; lights red while trans-
mitting in satellite operation.
!3 RF GAIN CONTROL/SQUELCH CONTROL
[RF/SQL] (outer control)
Adjusts the RF gain and squelch threshold level for
the SUB band. The squelch removes noise output
from the speaker (closed condition) when no signal
is received.
AF RF/SQL
No audio output
Max. audio output
Decreases Increases
Squelch is
open.
S-meter
squelch
S-meter squelch
threshold
Noise squelch
threshold
Shallow Deep
Noise squelch
Minimum RF gain
Adjustable
range
Maximum
RF gain
Recommended level
RF gain
adjustable
range (SSB,
CW modes)
Maximum
RF gain
S-meter
squelch
Noise squelch (FM mode)
Squelch is
open.
MODE
SSB, CW
FM
AUTO
RF GAIN
SQL
SQL
SET MODE SETTING
SQL
SQL
RF GAIN + SQL
RF GAIN + SQL
SQL
3
2
PANEL DESCRIPTION
Содержание
- Instruction manual 1
- Explicit definitions 2
- Important 2
- Precautions 2
- R neve 2
- R warning high voltage neve 2
- Read this instruction manual carefull 2
- Save this instruction manual 2
- Supplied accessories 3
- Table of contents 3
- The transceiver comes with the following accessories qty q dc power cable opc 657a 1 w hand microphone hm 12 1 e spare fuses fgb 30 a 2 r spare fuse fgb 4 a 1 3
- I front panel 4
- Panel description 4
- 0 rf gain control squelch control rf sql outer control adjusts the rf gain and squelch threshold level for the main band the squelch removes noise output from the speaker closed condition when no signal is received 5
- 1 af control af inner control varies the audio output level from the speaker for the main band 5
- 2 sub band indicator sub lights green while the squelch is opened or a signal is received on the sub band lights red while trans mitting in satellite operation 5
- 3 rf gain control squelch control rf sql outer control adjusts the rf gain and squelch threshold level for the sub band the squelch removes noise output from the speaker closed condition when no signal is received 5
- Flashes when an off frequency signal is received and the fm center detector is activated p 28 5
- O main band indicator main lights green while the squelch is opened or a sig nal is received on the main band lights red while transmitting on the main band 5
- Panel description 5
- The squelch is particularly effective for fm it is also available for other modes 12 to 13 o clock position is recommended for any setting of the rf sql control the squelch threshold position for ssb cw mode can be set from 12 or 13 o clock position in ssb cw set mode p 62 the control can be set as auto rf gain control in ssb and cw squelch control in fm or squelch control rf gain is fixed at maximum in set mode as follows p 56 5
- When functioning as rf gain control squelch is fixed open ssb cw only 5
- When functioning as squelch control rf gain is fixed at maximum 5
- When setting as rf gain squelch control 5
- While transmitting the indicator also shows alc con dition brightness increases more than usual when the alc function is activated 5
- Continued 6
- I front panel 6
- Continued 8
- I front panel 8
- 0 ssb cw cw narrow switch ssb cw cw n push to switch the operating mode be tween ssb and cw p 23 10
- 1 fm fm narrow switch fm fm n p 23 push to switch the operating mode be tween fm and fm repeater mode 10
- 2 tone switch tone push to turn the tone encoder function on and off in fm mode p 31 except for european version 10
- 3 main sub change band switch m s band push to replace the main band s fre quency and mode with the sub band s p 19 10
- 5 4 3 2 1 0 9 10
- 9 split duplex switch split dup push to turn the split function with the vfo a and b on and off p 37 10
- Available repeater tones unit hz 10
- Continued 10
- I front panel 10
- Panel description 10
- Push for 1 sec to change the operating band during single band operation or when the optional band unit ux 910 is installed p 20 10
- Push for 1 sec to select the duplex re peater direction or to turn the function off p 34 10
- Push for 1 sec to switch the operating mode between fm and fm n fm nar row 10
- Push for 1 sec to switch the operating mode between usb and lsb or between cw and cw narrow during ssb or cw mode respectively 10
- Push to transmit a 1750 hz repeater tone in fm mode for european version 10
- Anf anf 12
- I function display 12
- Rit rit split split 12
- Usb usbls 12
- I rear panel 14
- D acc sockets 15
- D data sockets 15
- I sub band data socket 15
- O main band data socket 15
- Panel description 15
- I antenna connection 16
- I grounding 16
- I selecting a location 16
- I unpacking 16
- Installation and connections 16
- R warning neve 16
- Dc power supply p 17 430 440 mhz ant p 14 17
- Front panel 17
- I required connections 17
- Installation and connections 17
- Key jack p 38 ground p 14 17
- Mhz ant p 14 17
- Rear panel 17
- Front panel 18
- I advanced connections 18
- Installation and connections 18
- Rear panel 18
- 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 19
- Caution 19
- Connecting a dc power supply 19
- Connecting a vehicle battery 19
- I power supply connections 19
- Installation and connections 19
- Never connec 19
- Never us 19
- The cig arette lighter socket as a power source 19
- To a 24 v battery 19
- Use an optional dc power supply with a 25 a capacity and above when operating the transceiver with ac power refer to the diagrams below 19
- Basic operation 20
- Cpu resetting 20
- I initial settings 20
- I when first applying power 20
- Accessing the sub band 21
- Assign 144 mhz or 430 440 mhz band whichever band you want to transmit or be called on as the main band push m s to exchange the main and sub bands 21
- Basic operation 21
- Db s 1 3 5 7 9 20 40 21
- Each main and sub bands have independent fea tures 21
- Exchanging the main and sub bands 21
- I main and sub bands 21
- Main band display 21
- Normally any operations such as tuning operating mode selection memory channel selection and pro gramming etc are performed on the main band however these operations can be performed on the sub band by using the sub band access capability 21
- Push sub to switch the sub band access capa bility on and off 21
- Simultaneous receive on both the main and sub bands is possible however the transmission can only be transmitted on the main band not on the sub band in the case of satellite operation mode the sub band is used for the transmission band 21
- Sub band display 21
- Sub indicator appears while the sub band access ca pability is activated even during sub band access transmission cannot be made on the sub band 21
- The function display shows both the main and sub band frequencies and both bands can receive signals simultaneously 21
- The ic 910h has dual bands 144 mhz and 430 440 mhz these bands can be assigned to the main and sub bands for operating convenience 21
- The main band is the operation for both transmit and receive and is displayed in the upper area of the func tion display the sub band is the operation for only re ceive and is displayed in the lower area of the function display 21
- Basic operation 22
- Db s 1 3 5 7 9 20 40 22
- I operating band selection 22
- Note the same operating band cannot be as signed on both main and sub bands simultane ously 22
- Optional ux 910 is required 22
- Q push sub to cancel the sub band access if re quired w push m s band for 1 sec to select operating band 22
- Q push sub to enable the sub band access 22
- Select 1200 mhz to main band 22
- Select 1200 mhz to sub band 22
- Selecting on the main band 22
- Selecting on the sub band 22
- Sub indicator appears 22
- The ic 910h can be used on the additional 1200 mhz band with the optional ux 910 the operating band can be selected by pushing m s band for 1 sec 22
- W push m s band for 1 sec to select operating band 22
- I vfo description 23
- Selecting the vfo a b 23
- Vfo equalization 23
- I frequency setting 24
- Quick tuning step 24
- Tuning step selection 24
- Frequency setting with the keypad 25
- Operating mode selection 25
- I sub band off 26
- I sub tuning dial 26
- When the rit control is assigned as sub tuning dial 26
- I dial lock function 27
- Sub tuning dial assignment 27
- I functions for receive 28
- Receive and transmit 28
- Squelch setting 28
- Volume setting 28
- I if shift function 29
- I rit function 29
- Main band if shift operation 29
- Rit variable range 29
- Sub band if shift operation 29
- I afc function 30
- I agc time constant 30
- I fm center indicator 30
- I attenuator 31
- I simple band scope 31
- Setting sweeping time interval 31
- Setting the attenuation level 31
- I noise blanker 32
- I tone squelch operation 32
- Push afc nb to turn the noise blanker function on and off 32
- Q push m s band to select the band for the tone squelch frequency to be set w push set then fm to enter the fm set mode e push dn m or l up to select tone squelch fre quency item r rotate the tuning dial to select the desired tone squelch frequency t push fm to exit from the fm set mode 32
- Q select the desired band by pushing m s band w push fm to select fm mode then set the desired frequency e push call t sql for 1 sec to activate the tone squelch 32
- R when the signal with correct tone is received the squelch opens and audio can be heard 32
- Receive and transmit 32
- Setting the tone squelch frequency 32
- T operate the transceiver in a normal way push ptt to transmit release ptt to receive y push call t sql for 1 sec to cancel the tone squelch 32
- The noise blanker is effective on both the main and sub bands but cannot be used for fm or non pulse type noise 32
- The tone squelch frequencies can be independently set for each band 32
- The tone squelch opens only when receiving a signal with the same pre programmed subaudible tone you can silently wait for a call from group members using the same tone you can check the tone frequency using the tone scan function if desired p 47 32
- Tone frequency list unit hz 32
- When operating in ssb or cw mode pulse type noise may be received such as from car ignitions in this case the noise blanker eliminates such noise 32
- When using the noise blanker received audio may be distorted if the signals are excessively strong 32
- Anf automatic notch filter function 33
- I optional dsp functions 33
- Nr noise reduction function 33
- Optional ut 106 33
- Setting the noise reduction level 33
- I functions for transmit 34
- I indications during transmit 34
- I transmission via microphone 34
- Microphone gain 34
- Output power 34
- Ptt lock function 34
- Rf power indicator 34
- Time out timer 34
- Transmit indicator 34
- Adjusting the anti vox gain 35
- Adjusting the vox delay 35
- Adjusting the vox gain 35
- For ssb and fm 35
- I fm mode operation 35
- I vox operation 35
- Frequency range and shift direction 36
- I repeater operation 36
- Manual repeater setting 36
- Setting the auto repeater range 36
- Setting the shift direction for the one touch repeater function 36
- Setting offset frequency 37
- Setting tone frequency 37
- Using the one touch repeater function 37
- Compression level setting 38
- I speech compressor 38
- I ssb mode operation 38
- I full duplex operation 39
- I split frequency operation 39
- I connections for cw 40
- I cw mode operation 40
- Setting cw pitch 41
- Setting keying speed 41
- Setting keying weight 41
- Setting semi break in function 41
- Setting side tone 41
- During vfo mode operation 42
- I memory channels 42
- I operation on a memory channel 42
- Memory channel selection 42
- Memory operation 42
- E set the desired operating frequency and mode in the memory mode 43
- I programming in memory mode 43
- I programming in vfo mode 43
- Memory channel programming can be performed ei ther in vfo mode or in memory mode 43
- Memory operation 43
- Q push v m 1 to select memory mode w push dn m or l up to select the desired mem ory channel to be programmed 43
- Q set the desired operating frequency and mode in vfo mode 43
- R push mw 4 for 1 sec to program the displayed frequency and operating mode into the memory channel 43
- To check the programmed contents push v m 1 to select memory mode 43
- W push dn m or l up to select the desired mem ory channel to be programmed e push mw 4 for 1 sec to program the displayed frequency and operating mode into the memory channel 43
- I blank channels 44
- I frequency transferring 44
- Programming a blank channel 44
- Transferring in memory mode 44
- Transferring in vfo mode 44
- Call channel programming 45
- Call up a call channel 45
- I call channel 45
- I memory clearing 45
- Transferring call channel contents 45
- Calling up a frequency from a memo pad 46
- I memo pads 46
- Writing frequencies and operating modes into memo pads 46
- I preparation 47
- I scan types 47
- Scan resume on off 47
- Scan speed 47
- Scan start stop operation 47
- Setting scan resume condition 47
- Setting scan speed 47
- Squelch condition 47
- When receiving a signal 47
- I memory scan operation 48
- I programmed scan operation 48
- Selecting scanning range 48
- Starting the programmed scan 48
- I mode select scan 49
- I tone scan 49
- I entering into the satellite mode 50
- I satellite communications outline 50
- I satellite notes 50
- Satellite operation 50
- Transferring the vfo frequency to the satellite vfo 50
- Both downlink and uplink frequencies increase or de crease in the same step simultaneously by tuning dial rotation 51
- Downlink frequency indication disappears push swp 0 í again after the tuning 51
- E push scan â to enable the downlink frequency tuning 51
- F inp ent 51
- I setting the satellite vfo 51
- I tracking selection 51
- Normal tracking 51
- Note to select the operating mode for the uplink push sub to enable the sub band access 51
- Push f inp ent for 1 sec to switch be tween normal and reverse tracking 51
- Q push satellite to enter the satellite mode 51
- R push swp 0 í to enable the uplink frequency tuning 51
- Reverse tracking 51
- Satellite 51
- Satellite mode indication 51
- Satellite operation 51
- Satl indicator with either nor or rev indicator ap pears 51
- The downlink frequency follows the tuning dial rotation however the uplink frequency changes in the reverse direction to the tuning dial rotation in the same step 51
- Uplink frequency indication disappears rotate the tuning dial to set the downlink frequency and push ssb cw to select the operating mode push scan â again after the tuning 51
- Varies simultaneously 51
- Vfo or memory mode indicator is displayed in the sub band lower area 51
- W push v m 1 to toggle satellite vfo and memory mode 51
- I preparation 52
- I satellite memory 53
- I satellite operation 53
- Satellite memory programming 53
- Satellite memory selection 53
- Connections via acc 1 socket or mic connector 54
- Connections via data socket 54
- Data communication 54
- I connections for afsk 54
- I functions for afsk 54
- Connections via front panel 55
- Frequency setting example for afsk 55
- I afsk operation 55
- I operating frequency notes 55
- I operating mode notes 55
- Operating notes for packet 55
- Operating notes for rtty and amtor 55
- Adjusting the transmit signal output from the tnc 56
- I setting the acc socket 56
- I set mode description 57
- Independent set mode operation 57
- Set mode 57
- Set mode operation 57
- Beep tone 58
- Display backlight brightness 58
- I general set mode 58
- Peak hold function 58
- Rf sql control assignment 58
- Acc socket pin 5 and pin 6 59
- Auto ts function 59
- Bps data transmission 59
- Fine tuning indication 59
- Headphone audio 59
- Microphone up dn speed 59
- Acc socket pin 3 for 1200 mhz band 60
- Acc socket pin 3 for 144 mhz band 60
- Acc socket pin 3 for 430 440 mhz band 60
- Acc socket pin 4 data socket pin 1 60
- Acc socket pin 8 60
- Preamplifier controller for 144 mhz 60
- Ci v address 61
- Ci v baud rate 61
- Ci v transceive 61
- Preamplifier controller for 1200 mhz 61
- Preamplifier controller for 430 440 mhz 61
- I fm set mode 62
- Offset frequency for 1200 mhz 62
- Offset frequency for 144 mhz 62
- Offset frequency for 430 440 mhz 62
- Tone encoder frequency for 1200 mhz 62
- Tone encoder frequency for 144 mhz 62
- Tone encoder frequency for 430 440 mhz 62
- Auto repeater function 63
- Fm center indicator 63
- One touch repeater shift direction 63
- Tone squelch frequency for 1200 mhz 63
- Tone squelch frequency for 144 mhz 63
- Tone squelch frequency for 430 440 mhz 63
- Carrier frequency 64
- Cw break in delay 64
- Cw keying speed adjustment 64
- Cw pitch frequency 64
- I ssb cw set mode 64
- Semi break in 64
- Squelch threshold 64
- Af control relation 65
- C n type for 1200 mhz 65
- Cw dot dash ratio 65
- Cw side tone output level 65
- Key type 65
- Compression level 66
- I compressor set mode 66
- I memo pad set mode 66
- I scan set mode 66
- Number of memo pad channels 66
- Programmed scanning range 66
- Scan resume condition 66
- Scanning speed 66
- Anti vox 67
- Attenuation level for 144 mhz 67
- Attenuation level for 430 440 mhz 67
- I attenuator set mode 67
- I vox set mode 67
- Vox delay time 67
- Vox sensitivity 67
- I transmit set mode 68
- Ptt lock 68
- Sub band mute 68
- Time out timer 68
- I nr set mode 69
- I swp set mode 69
- Noise reduction level for 1200 mhz 69
- Noise reduction level for 144 mhz 69
- Noise reduction level for 430 440 mhz 69
- Sweeping interval 69
- I rit shift set mode 70
- Rit control assignment 70
- Rit indication 70
- Shift control assignment 70
- Announcement language 71
- Announcement speed 71
- I speech set mode 71
- Output level 71
- S meter level announcement 71
- Bottom view pll main unit 72
- I internal view 72
- Option installations 72
- Top view pa unit 72
- Caution 73
- I opening the transceiver s case 73
- I ut 102 73
- Opening the pa unit cover 73
- Voice synthesizer unit 73
- Dsp unit 74
- I ut 106 74
- Installing 1st dsp unit front panel side 74
- Installing 2nd dsp unit rear panel side 74
- I ux 910 75
- Mhz band unit 75
- High stability crystal unit 76
- I cr 293 76
- Cw narrow filter 77
- I fl 132 fl 133 77
- I troubleshooting 78
- Maintenance 78
- The following chart is designed to help you correct problems which are not equipment malfunctions if you are unable to locate the cause of a problem or solve it through the use of this chart contact your near est icom dealer or service center 78
- Caution 79
- I cpu resetting 79
- I fuse replacement 79
- Ci v connection example 80
- Control command 80
- Data format 80
- I remote jack ci v information 80
- Control command 81
- General 82
- Receiver 82
- Specifications 82
- Transmitter 82
- Options 83
- Installation notes 84
- About ag 25 ag 35 and ag 1200 preamplifiers 85
- Declaration of conformity 85
- Ic 910h 85
- Version and frequency coverage 85
- Count on us 86
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