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Icom IC-T90A [27/100] I setting the squelch level
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■ Setting the squelch level
22
4
BASIC OPERATION
The squelch circuit mutes the received
audio signal depending on the signal
strength. The transceiver has 9 squelch
levels, a continuously open setting and
an automatic squelch setting.
D Setting the squelch level
q While pushing and holding [SQL], ro-
tate [DIAL] one-click to display the
current squelch level.
w Rotate [DIAL] successively to adjust
the squelch level.
•“LEVEL1” is loose squelch and
“LEVEL9” is tight squelch.
•“AUTO” indicates automatic level adjust-
ment with a noise pulse count system.
e Release [SQL] to return to the previ-
ous indication.
[Squelch level indication]
DMonitor function
This function is used to listen to weak
signals or to open the tone squelch
manually.
➥ Push and hold [SQL] to monitor the
operating frequency.
The [SQL] switch can be set as a
monitor ON/OFF switch in set mode.
(p. 60)
[SQL]
Blinks while monitoring.
FM SKIPP
rr
BASIC OPERATION
[SQL]
[DIAL]
Indication
Squelch level
Open
Automatic (default)
Level 1 (loose)
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8
Level 9 (tight)
IC-T90A_IM.qxd 02.6.6 08:44 AM Page 25 (1,1)
Содержание
- Ic t90a_im qxd 02 08 44 am page a 1 1 1
- Instruction manual 1
- Multiband fm transceiver 1
- Foreword 2
- Ï features tri band fm transceiver wide band receiver covers 495 khz to 999 90 mhz new dms dynamic memory scan bank scan lithium ion technology rugged palm sized weather resis tant construction dtcs and ctcss tone squelch simple operation 2
- Explicit definitions 3
- Important 3
- Read all instruction 3
- Save this instruction manual 3
- Supplied accessories 3
- Caution 4
- Cautions 4
- Do not 4
- Never connec 4
- Warning neve 4
- Warning rf exposure 4
- Table of contents 5
- D attaching the swivel belt clip 6
- D installing the alkaline batteries 6
- I accessory attachment 6
- I installing the battery pack 6
- Quick reference guide 6
- Caution 7
- D handstrap 7
- Quick reference guide 7
- To remove 7
- Caution 8
- D attaching the antenna 8
- Never hol 8
- Quick reference guide 8
- D charging with the cp 19 cigarette lighter cable optional 9
- D charging with the wall charger 9
- I charging the li ion battery pack 9
- Quick reference guide 9
- I external power operation 10
- I rapid charging 10
- Power supply range is between 5 11 v dc never connect over 11 v dc directly into the dc power jack of the transceiver 10
- Quick reference guide 10
- First contact 11
- I your first contact 11
- Quick reference guide 11
- I panel description 12
- Panel description 12
- Panel description 13
- Panel description 14
- Panel description 15
- I function display 16
- Panel description 16
- Panel description 17
- Battery charging 18
- D operating periods 18
- I battery attachment 18
- I battery cautions 18
- Battery charging 19
- D battery indicators 19
- I regular charging 19
- Battery charging 20
- I rapid charging 20
- Battery charging 21
- D battery information 21
- D battery replacement 21
- I battery case 21
- I external power operation 21
- Option 21
- Power supply range is between 5 11 v dc never connect over 11 v dc directly into the dc power jack of the transceiver 21
- Basic operation 22
- D setting volume level 22
- D turning power on 22
- D volume level indication 22
- I turning power on 22
- Basic operation 23
- D mhz tuning step 23
- D setting the tuning step 23
- I tuning step 23
- Basic operation 24
- D setting the frequency with keypad 24
- Dtmf m 24
- Setting a frequency 24
- T scan 24
- Basic operation 25
- D call tv weather channels 25
- D memory mode 25
- D vfo mode 25
- I mode selection 25
- Am skip p 26
- Basic operation 26
- D selecting the operating band 26
- D selecting the receive mode 26
- Fm skip p 26
- Fm skip p w 26
- I operating band and receive mode selection 26
- Q select vfo mode with vfo w push band several times to select the desired band 26
- The transceiver can receive the bc broadcast bands 5 mhz band 50 mhz band fm broadcast band air band vhf 144 mhz band 220 mhz band 300 mhz band uhf 430mhz band or 800 mhz band 26
- When pushing ptt a beep tone sounds indicating the mode is not fm mode the transceiver cannot transmit in am or wfm mode 26
- Basic operation 27
- D monitor function 27
- D setting the squelch level 27
- I setting the squelch level 27
- Basic operation 28
- D exchange dial and y z functions 28
- D setting squelch level 28
- D setting volume level 28
- I receiving 28
- Push 1 v d for 1 sec to exchange the functions of the tuning dial and y z switches 28
- Push y or z to set the desired audio level 28
- Q while pushing sql rotate dial to select the squelch level 28
- The functions of tuning dial and y z switches can be ex changed if desired 28
- W release sql to return to the previous indication 28
- Basic operation 29
- D receiving amateur bands 29
- D receiving fm broadcast 29
- E push band several times to select the 144 mhz band 29
- E push band several times to select the fm broadcast band 29
- Example receiving 145 00 mhz 29
- Example receiving 88 00 mhz 29
- Q select vfo mode with vfo w for direct frequency input push 1 4 5 6 0 0 29
- Q select vfo mode with vfo w for direct frequency input push 8 8 2 0 0 29
- R push mode several times to select fm mode if required t rotate dial to set 145 00 mhz y when a signal is received 29
- R push mode several times to select wfm mode if re quired t rotate dial to set 88 00 mhz y when a signal is received 29
- Basic operation 30
- D receiving tv channels 30
- Basic operation 31
- D tv skip channel setting 31
- D tv skip scan 31
- E when the scan is finished 31
- Q select tv mode with call tv 31
- The skip channel setting can be set manually 31
- The transceiver automatically programs the receivable tv channels as non skip channels and others as skip channels 31
- W push mode scan for 1 sec to start tv skip scan 31
- W rotate dial while pushing band to select the desired tv channel e push 5 skip for 1 sec to toggle the skip setting 31
- Basic operation 32
- I attenuator function 32
- I rit function 32
- Basic operation 33
- Caution 33
- D amateur band operation 33
- D fm narrow mode 33
- D operating band and frequency setting 33
- D selecting output power and transmitting 33
- I transmitting 33
- Basic operation 34
- I repeater operation 34
- Basic operation 35
- D checking the repeater input signal 35
- D off band indication 35
- Basic operation 36
- D setting duplex direction 36
- D setting offset frequency 36
- I duplex operation 36
- Basic operation 37
- D setting split frequency operation 37
- D split frequency operation example 37
- I split operation 37
- Basic operation 38
- D frequency range and offset direction 38
- I auto repeater function 38
- U s a and korea versions only 38
- Basic operation 39
- I 1750 hz tone 39
- D default memory contents example 40
- D memory call channel contents 40
- I general 40
- Memory call channels 40
- D check contents of all memory channels 41
- D selecting with keypad 41
- D selecting with tuning dial 41
- I calling up memory channels 41
- Memory call channels 41
- D programming a memory channel 42
- Emory channels 42
- Memory call channels 42
- Programming 42
- D auto memory channel increment 43
- I transferring memory contents to vfo 43
- Memory call channels 43
- D memory name input 44
- I copying memory contents 44
- I memory names 44
- Memory call channels 44
- D memory name indication 45
- Memory call channels 45
- D setting a memory bank 46
- Each bank a h j l n r t u and y can be assigned up to 100 memory channels 46
- I memory bank 46
- Memory banks are used for arrangement of a memory channel when you edit the original memory channel con tents the memory bank contents are updated automati cally 46
- Memory call channels 46
- Q push mr to select memory mode w set the desired memory channel with dial e push mr s mw for 1 sec to indicate a memory channel 46
- R push call tv several times to select bank 46
- T push band to select a memory bank 46
- The transceiver has 500 memory channels that can be as signed to 18 banks for faster memory access memory arrangement etc 46
- U push vfo to program the memory bank channel 46
- Y rotate the tuning dial to select the desired channel 46
- Band mr s mw call tv 47
- Ic t90a_im qxd 02 08 44 am page 45 1 1 47
- Memory call channels 47
- Push band to select the memory bank in sequence pushing mr toggles the memory channel indication and memory bank indication 47
- I memory clear 48
- Memory call channels 48
- D selecting a call channel 49
- I call channel 49
- Memory call channels 49
- D memory scans 50
- D vfo scans 50
- I scan types 50
- Scan operation 50
- I vfo scan 51
- Scan operation 51
- I frequency skip function 52
- I skip channel setting 52
- Scan operation 52
- D full bank scan bank scan 53
- D full memory scan select band scan 53
- I memory scan 53
- Scan operation 53
- D busy led on off 54
- D scan stop beep 54
- D scan stop led 54
- D skip function 54
- D squelch setting 54
- D tuning dial operation while scanning 54
- D tuning step setting while scanning 54
- D when receiving a signal 54
- I scan notes 54
- Scan operation 54
- I priority alert 55
- I priority watch types 55
- Priority watch 55
- D memory channel watch 56
- I priority watch operation 56
- Priority watch 56
- D memory scan watch 57
- D vfo scan with memory channel watch 57
- Priority watch 57
- D call channel watch 58
- D vfo scan with memory scan watch 58
- Priority watch 58
- D vfo scan with call channel watch 59
- Priority watch 59
- D entering set mode 60
- D expanded set mode on off 60
- I set mode 60
- Set mode 60
- Exp1 expanded set mode 1 61
- Exp2 expanded set mode 2 61
- General set mode 61
- I set mode items 61
- Set mode 61
- 67 254 hz 50 tones 88 hz default 62
- Dtcs code table 62
- Dtcs squelch code code 62
- Ic t90a_im qxd 02 08 44 am page 60 1 1 62
- Offset frequency offset 62
- Repeater tone r tone 62
- Repeater tone squelch tone table 62
- Selects the dtcs squelch code from one of 104 available codes 023 754 104 codes 023 default 62
- Selects the tone encoder frequency for accessing a repeater etc from one of 50 available tone frequencies 62
- Selects the tone squelch or pocket beep frequency from one of 50 available tone frequencies 62
- Set mode 62
- Sets the offset frequency for duplex repeater operation within 0 159 95 mhz range 62
- Tone squelch pocket beep frequency c tone 62
- Beep tone level beeplv 63
- Priority watch prio 63
- Scan pause timer pause 63
- Scan resume time resume 63
- Set mode 63
- Auto power off ap off 64
- Beep tone beep 64
- Busy led busy 64
- Display backlighting light 64
- Set mode 64
- Dial speed acceleration speed 65
- Monitor switch action moni 65
- Power save p save 65
- Set mode 65
- Auto repeater autorp 66
- Dtmf speed dtmf 66
- Optional hm 75a function mic 66
- Set mode 66
- Backlighting position lightp 67
- Scan stop beep stopb 67
- Scan stop led stop l 67
- Set mode 67
- Weather alert wx alt 67
- Auto power on ap on 68
- Backlighting color color 68
- Band edge beep edge b 68
- Key lock effect lock 68
- Set mode 68
- Lcd contrast cont 69
- Opening message opn msg 69
- Ptt lock ptt lk 69
- Set mode 69
- Active band active 70
- Busy lockout lk out 70
- Dtcs phase mode dtcs p 70
- Set mode 70
- Time out timer tot 70
- Fm narrow deviation narrow 71
- Morse code keying speed ky spd 71
- Morse code synthesizer mc syn 71
- Set mode 71
- Split operation split 71
- I programming a dtmf code 72
- Other functions 72
- D transmitting a dtmf code directly 73
- D transmitting from dtmf memory 73
- I transmitting a dtmf code 73
- Other functions 73
- I clearing a dtmf memory 74
- I confirming a dtmf memory 74
- Other functions 74
- D setting dtcs code for dtcs squelch or beep 75
- I tone frequency and dtcs code 75
- Other functions 75
- Pocket and dtcs beep 75
- Setting subaudible tones for repeater or tone squelch 75
- Subaudible repeater tone 75
- Tone and dtcs squelches 75
- I pocket beep function 76
- I tone dtcs squelch 76
- Other functions 76
- I available dtcs codes 77
- I available tone frequencies 77
- Other functions 77
- The transceiver has 104 dtcs codes for dtcs squelch and dtcs beep 77
- The transceiver has 50 tone frequencies and consequently their spacing is narrow compared with units having 38 tones therefore some tone frequencies may receive in terference from adjacent tone frequencies 77
- The transceiver has 50 tone frequencies for repeater and tone squelch ctcss pocket beep operation separate tone frequencies can be set for repeater and tone squelch pocket beep operation unit hz 77
- E push 7 t scan for 1 sec to start the tone scan 78
- I tone scan 78
- Other functions 78
- Q set the desired frequency or memory channel to be checked for a tone frequency or dtcs code w push 2 tone for 1 sec one or more times to activate the repeater tone tone squelch or dtcs squelch t t sql or dtcs 78
- R when the tone frequency or dtcs code is decoded the set mode contents are programmed with the frequency or code 78
- T push vfo to stop the scan 78
- The transceiver can detect the subaudible tone frequency and dtcs code in a received signal by monitoring a signal that is being transmitted on a repeater input frequency you can determine the tone frequency required to access the repeater 78
- D key lock effect 79
- I beep tones 79
- I dial speed acceleration 79
- I lock function 79
- Other functions 79
- I morse code synthesizer 80
- I power save 80
- Other functions 80
- I auto power off 81
- I auto power on 81
- I ptt lock 81
- I time out timer 81
- Other functions 81
- D weather alert function 82
- D weather channel selection 82
- I weather channel operation 82
- Other functions 82
- Other functions 83
- I cloning function 84
- I sp mic jacks 84
- Other functions 84
- All reset 85
- Caution 85
- D all reset 85
- D partial reset 85
- I resetting 85
- Other functions 85
- Partial reset 85
- Hm 75a remote control microphone 86
- Optional 86
- Troubleshooting 87
- I u s a channels i ccir channels 88
- The following tables show the channels versus video and audio frequencies depending on each version 88
- Tv frequency table 88
- I australian channels 89
- I new zealand channels 89
- I taiwan channels 89
- Tv frequency table 89
- I china channels 90
- I indonesian channels 90
- Tv frequency table 90
- I fot channels 91
- I italian channels 91
- Tv frequency table 91
- D general 92
- Specifications 92
- D receiver 93
- D transmitter 93
- Specifications 93
- Options 94
- Options 95
- By cutting along the line and folding on the dotted line it will become a card sized operating guide which can easily be carried in a card case or wallet etc 97
- Ic t90a_im qxd 02 08 45 am page 95 1 1 97
- Important operating instructions are summed up in this and the following page for your simple reference 97
- Pocket guide 97
- Q cut w fold e complete 97
- I adjusting audio output level 98
- I adjusting squelch level 98
- I changing frequency band 98
- I changing receiving mode 98
- I frequency setting 98
- I memory channel clearing 98
- I memory channel programming 98
- I memory channel selection 98
- I scanning in memory mode 98
- I scanning in vfo mode 98
- I vfo memory mode selection 98
- Ic t90a_im qxd 02 08 45 am page 96 1 1 98
- Quick reference 98
- 1 32 kamiminami hirano ku osaka 547 0003 japan 100
- Count on us 100
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