![Icom IC-7200 [50/104] Preamp and attenuator](/img/pdf.png)
Icom IC-7200 [50/104] Preamp and attenuator
![Icom IC-7200 [50/104] Preamp and attenuator](/views2/1074133/page50/bg32.png)
■ Preamp and attenuator
The preamp amplifies received signals in the re-
ceiver input (front end) circuit to improve the S/N
ratio and sensitivity. Turn this function ON when re-
ceiving weak signals.
The attenuator prevents very strong signals near the
desired frequency, such as nearby broadcast sta-
tions or very strong amateur signals, from causing
distortion of a desired signal.
➥
Push
P.AMP
ATT
momentarily to turn the preamp ON
and OFF; push and hold for 1 sec. to turn the
attenuator ON.
• “ ” appears when the preamp is ON; “ ”
appears when the 20 dB attenuator is ON.
•
Only one of these functions can be activated at a time.
MODE
TUNER
TS
FILTER
SPCH
V/M
A/B
SPLIT
M-CL
SCAN
SET
ATT
P
.
AMP
COMP
VOX
MNF
RIT
1
2
3
4
5 6
7
8
0
50
28
1814
10
21
24
=
7
3.5
1.8
F-INP
M-CH/RIT
ENT
BAND
GENE
9
.
AGC
MW
ANF
METER
NR
NB
Either “ ” or
“ ” appears.
momentarily
momentarily 1 sec.
: Push and hold for 1 sec.
: Push momentarily
■ AGC function
The AGC (auto gain control) controls receiver gain to
produce a constant audio output level even when the
received signal strength is varied by fading, etc.
D AGC time constant selection
q Push
MODE
several times to select the desired
mode.
w
Push
AGC
once or twice to select AGC fast or
AGC slow.
• “F.AGC” appears for AGC fast; no indicator for AGC
slow is selected, respectively.
e Push and hold
AGC
for 1 sec. to turn the AGC
OFF.
• “AGC-OFF” appears for AGC OFF.
MODE
TUNER
TS
FILTER
SPCH
V/M
A/B
SPLIT
M-CL
SCAN
SET
ATT
P
.
AMP
COMP
VOX
MNF
RIT
1
2
3
4
5 6
7
8
0
50
28
1814
10
21
24
=
7
3.5
1.8
F-INP
M-CH/RIT
ENT
BAND
GENE
9
.
AGC
MW
ANF
METER
NR
NB
45
5
FUNCTIONS FOR RECEIVE
Содержание
- Front cover 1
- D features if dsp features digital twin pbt manual notch function 0 ppm of high frequency stability simple operation tough and compact body standard voice synthesizer 2
- Explicit definitions 2
- Fcc information 2
- Foreword 2
- Important 2
- Read this instruction manual carefull 2
- Save this instruction manual 2
- Supplied accessories 2
- Precautions 3
- R neve 3
- R warning high voltage neve 3
- R warning neve 3
- R warning rf exposure 3
- Table of contents 4
- Table of contents 5
- Front panel 6
- Panel description 6
- 3 1 5 4 6 7 9 8 0 8
- 0 headphone jack phones accepts headphones with 8 16 9
- 1 microphone connector mic accepts supplied or optional microphone 9
- 5 spch lock key 9
- 6 power key push to turn power on 9
- 7 tuner key 9
- 8 rf gain squelch control rf sql outer control p 30 adjusts the rf gain and squelch threshold level 9
- 9 af control af inner control p 29 varies the audio output level from the speaker 9
- Impedance 9
- P 67 push to turn the automatic antenna tuner func tion on or off 9
- Panel description 9
- Push and hold for 1 sec to manually tune the antenna tuner 9
- Push and hold for 1 sec to turn power off 9
- Push and hold for 1 sec to turn the dial lock function on or off p 29 9
- Push to announce the selected frequency and s meter level by the speech synthesizer p 32 9
- The squelch removes noise output from the speaker closed condition when no signal is re ceived 9
- When functioning as rf gain control squelch is fixed open ssb cw rtty only 9
- When functioning as rf gain sql control 9
- When functioning as sql control rf gain is fixed at maximum 9
- D keypad 10
- Keypad 10
- Scan comp 10
- Function display 12
- Q w e r 12
- O 0 1 q 14
- Rear panel 14
- T y u i 14
- 0 ground terminal gnd p 12 connects this terminal to a ground to prevent elec trical shocks tvi bci and other problems 15
- 1 dc power socket dc 13 v p 15 accepts 13 v dc through the supplied dc power cable 15
- Acc socket 15
- Acc socket information 15
- D acc socket information 15
- I accessory socket acc enables connection to external equipment such as a tnc for data communications a linear amplifier or an automatic antenna tuner etc see below for socket wiring information 15
- O tuner control socket tuner p 16 accepts the control cable from an optional ah 4 15
- Panel description 15
- When connecting the acc conversion cable opc 599 15
- Caution 16
- D hm 36 16
- D sm 20 16
- Do not short pin 2 to ground as this can damage the internal 8 v regulator dc voltage is applied to pin 1 for microphone opera tion use caution when using a non icom micro phone 16
- E ptt lock switch sm 20 only push to lock the ptt switch to the transmission codition 16
- Front view 16
- Hm 36 schematic diagram 16
- Microphone connector 16
- Microphones 16
- Option 16
- Panel description 16
- Q up down switches up dn change the selected readout frequency or memory channel 16
- Sm 20 option 16
- W ptt switch push and hold to transmit release to receive 16
- Antenna connection 17
- Grounding 17
- Installation and connections 17
- Selecting a location 17
- Unpacking 17
- Front panel 18
- Hf 50 mhz antenna dc power suppl 18
- Installation and connections 18
- Rear panel 18
- Required connections 18
- Advanced connections 19
- Battery connections 20
- Caution 20
- Connecting the dc power supply 20
- Power supply connections 20
- R warning neve 20
- External antenna tuners 21
- Alc send 22
- Linear amplifier connections 22
- Non icom linear amplifier 22
- R warning 22
- To an antenna 22
- Transceiver 22
- Ø coaxial cable 22
- Connections for cw 23
- Installation and connections 23
- Connections for rtty 24
- Connections for rtty afsk 24
- Connections for rtty fsk 24
- D connections for rtty afsk 24
- D connections for rtty fsk 24
- Installation and connections 24
- Connect an usb cable third party s between the transceiver s usb jack and pc p 9 25
- Connections for sstv or psk31 25
- D when connecting to the acc socket 25
- D when connecting to the mic connector 25
- D when connecting to the usb jack 25
- Installation and connections 25
- When connecting to the acc socket 25
- When connecting to the mic connector 25
- When connecting to the usb jack 25
- Applying power cpu resetting 26
- Basic operation 26
- Before first applying power 26
- D selecting the vfo a b 27
- D vfo equalization 27
- Selecting the vfo a b 27
- Vfo description 27
- Vfo equalization 27
- Vfo operation 27
- D differences between vfo mode and memory mode 28
- Differences between vfo mode and memory mode 28
- Selecting vfo memory mode 28
- Selecting an operating band 29
- Using the band stacking register 29
- D direct frequency entry with keypad 30
- D using the main dial 30
- Direct frequency entry with keypad 30
- Frequency setting 30
- Using the main dial 30
- D programmable tuning steps 31
- D selecting the programmable tuning step 31
- Programmable tuning steps 31
- Selecting the programmable tuning step 31
- 1 hz and 10 hz tuning steps 32
- Basic operation 32
- D 1 hz and 10 hz tuning steps 32
- Disap pears 32
- Disappears rotating dial changes the frequency in increments of 1 or 10 hz 32
- For 1 sec to toggle between the 1 hz and 10 hz step settings 32
- Note the frequency is changed in 50 hz step when the up dn switches of the microphone are used for the frequency setting when the pro grammable tuning step is not selected 32
- Push and hold 32
- Switch flow chart 32
- Ts switch flow chart 32
- When the programmable tuning step 32
- Auto tuning step function 33
- Band edge warning beep 33
- D auto tuning step function 33
- D band edge warning beep 33
- D ¼ tuning function ssb data cw rtty only 33
- ¼ tuning function ssb data cw rtty only 33
- Dial lock function 34
- Operating mode selection 34
- Volume setting 34
- Adjusting rf gain receive sensitivity 35
- Adjusting squelch removing non signal noise rotate the rf sql control to the 1 o clock posi tion to invoke the s meter squelch this allows you to set the minimum signal level needed to open the squelch 35
- Basic operation 35
- Meter function 35
- Normally the rf sql control is set to the 12 o clock position 35
- Rf gain and squelch 35
- Rotate the rf sql control to the 11 o clock posi tion for maximum sensitivity 35
- The rf sql control adjusts the rf gain and squelch threshold level the squelch stops noise out put from the speaker closed position when no sig nal is received 35
- The transceiver has 3 transmit meter functions for your convenience select the desired meter from rf power po alc and swr 35
- When functioning as rf gain control 35
- When functioning as rf gain sql control 35
- When functioning as sql control 35
- Basic transmit operation 36
- D output power and microphone gain settings 36
- D transmitting 36
- Output power and microphone gain settings 36
- Transmitting 36
- Voice synthesizer function 37
- Convenient functions for receive 38
- D convenient functions for receive 38
- Operating ssb 38
- Receive and transmit 38
- About 5 mhz band operation usa version only 39
- Convenient functions for transmit 39
- D about 5 mhz band operation usa version only 39
- D convenient functions for transmit 39
- Operating cw 40
- Convenient functions for receive 41
- Convenient functions for transmit 41
- D convenient functions for receive 41
- D convenient functions for transmit 41
- Cw pitch control 42
- Cw reverse mode 42
- D cw pitch control 42
- D cw reverse mode 42
- Cw side tone function 43
- D cw side tone function 43
- D keying speed setting 43
- Keying speed setting 43
- Convenient functions for receive 44
- D convenient functions for receive 44
- Operating rtty fsk 44
- D rtty reverse mode 45
- D twin peak filter 45
- Rtty reverse mode 45
- Twin peak filter 45
- D rtty decode set mode 46
- Rtty decode set mode 46
- Rtty key polarity rtty mode 46
- Rtty mark tone rtty mode 46
- Rtty shift width rtty mode 46
- Convenient functions for receive 47
- Convenient functions for transmit 47
- D convenient functions for receive 47
- D convenient functions for transmit 47
- Operating am 47
- Data mode sstv psk31 operation 48
- Functions for receive 49
- Rit function 49
- Agc function 50
- Agc time constant selection 50
- D agc time constant selection 50
- Preamp and attenuator 50
- Twin pbt operation 51
- D if filter selection 52
- If filter selection 52
- D filter passband width setting 53
- D if filter shape ssb cw only 53
- Filter passband width setting 53
- If filter shape ssb cw only 53
- D noise blanker settings 54
- Nb level 54
- Nb width 54
- Noise blanker 54
- Noise blanker settings 54
- D noise reduction level setting 55
- Noise reduction 55
- Noise reduction level setting 55
- Auto notch function 56
- D auto notch function 56
- D manual notch function 56
- Functions for receive 56
- Manual notch function 56
- Notch function 56
- The auto notch can be used in ssb and am modes 56
- This transceiver has auto and manual notch func tions the auto notch function automatically attenuates beat tones tuning signals changing frequency etc even if they are moving the manual notch can be set to attenuate a fre quency via the mnf control 56
- To turn the auto notch function on or off 56
- To turn the automatic notch function on or off 56
- To turn the manual notch function on or off 56
- D manual notch filter setting 57
- Manual notch filter setting 57
- Adjusting the vox function 58
- D adjusting the vox function 58
- Functions for transmit 58
- Vox function 58
- Vox set mode 59
- Break in function 60
- D semi break in operation 60
- Semi break in operation 60
- D full break in operation 61
- Full break in operation 61
- Compression level setting 62
- D compression level setting 62
- Microphone gain setting 62
- Speech compressor 62
- Split frequency operation 63
- D quick split function 64
- D split lock function 64
- Quick split function 64
- Split lock function 64
- Measuring swr 65
- About the m ch control when the rit control indicator lights orange the memory channels cannot be selected with rotat ing the m ch control because the m ch con trol acts as the rit control so push 66
- All 201 memory channels are tuneable which means the programmed frequency can be tuned temporarily with dial etc in memory mode 66
- Example selecting memory channel 17 66
- Memory channel selection 66
- Memory channels 66
- Memory mode 66
- Memory operation 66
- Q push 66
- The transceiver has 201 memory channels including 2 scan edge channels memory mode is very useful for quickly changing to often used frequencies 66
- To select memory mode 66
- To set the m ch control to memory channel control rit control indicator goes out 66
- Vfo mode 66
- W rotate m ch to select the desired memory channel 66
- D programming in memory mode 67
- D programming in vfo mode 67
- Memory programming 67
- Programming in memory mode 67
- Programming in vfo mode 67
- Copying in memory mode 68
- D copying in memory mode 68
- Frequency copying 68
- Memory clearing 69
- Preparation 70
- Scan operation 70
- Scan types 70
- Memory scan operation memory mode 71
- Programmed scan operation vfo mode 71
- Antenna tuner operation 72
- Automatic antenna tune 72
- Manual tuning 72
- Operation 72
- Optional at 180 72
- Optional at 180 automatic antenna tuner operation 72
- Tuner operation 72
- Antenna tuner operation 73
- At 180 inside top cover 73
- At 180 internal switch description 73
- Connector information for acc 2 socket 73
- Is necessary 73
- Name description 73
- Pin no 73
- Q remove the top cover of the at 180 w set the tuner switches to the desired positions ac cording to the table below 73
- Specifications for the at 180 73
- The optional at 180 has 3 operating configurations for hf band operation select a suitable configura tions according to your antenna system 73
- Ah 4 operation 74
- Automatic antenna tune 74
- D ah 4 operation 74
- Operation 74
- Optional ah 4 74
- Optional ah 4 automatic antenna tuner operation 74
- R danger high voltage 74
- General 75
- Quick set mode operation 75
- Set mode 75
- Set mode operation 75
- Data mode ssb am modes 76
- Mic gain ssb am modes 76
- Quick set mode 76
- Rf power all modes 76
- Cw pitch cw mode 77
- Key speed cw mode 77
- Rtty mark tone rtty mode 77
- Side tone level cw mode 77
- Side tone level limit cw mode 77
- Twin peak filter rtty mode 77
- Quick set mode continued 78
- Rtty key polarity rtty mode 78
- Rtty shift width rtty mode 78
- Lcd backlight 79
- Set mode 79
- Band edge beep 80
- Beep level 80
- Beep level limit 80
- Meter peak hold 80
- Rf sql control 80
- Set mode continued 80
- Auto tune 81
- Quick split 81
- Split lock 81
- Modulation input data off 82
- Modulation input data on 82
- Ptt tune 82
- Set mode continued 82
- Speech language 82
- Speech level 82
- Usb level 82
- Scan resume 83
- Scan speed 83
- Speech 83
- Speech s level 83
- Speech speed 83
- Cw normal side 84
- Dial ¼ 84
- Main dial auto ts 84
- Mic up down speed 84
- Set mode continued 84
- Ssb cw synchronous tuning 84
- Break in 85
- Break in delay 85
- Dot dash ratio 85
- Paddle polarity 85
- Keyer type 86
- Mic up down keyer 86
- Mode select cw 86
- Mode select rtty 86
- Mode select ssb 86
- Set mode continued 86
- Ci v address 87
- Ci v baud rate 87
- Ci v transceive 87
- D paddle operation from mic connector 87
- Mode select am 87
- Paddle operation from mic connector 87
- Reference frequency adjustment 87
- Caution 88
- Circuitry fuse replacement 88
- D circuitry fuse replacement 88
- D dc power cable fuse replacement 88
- Dc power cable fuse replacement 88
- Fuse replacement 88
- Maintenance 88
- Cleaning 89
- Memory backup 89
- Resetting the cpu 89
- 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 nearest icom dealer or service center 90
- Troubleshooting 90
- Troubleshooting 91
- Carrying handl 92
- Handle 92
- Installation 92
- Mb 116 92
- Mb 116 handles installation 92
- Mb 117 92
- Mb 117 carrying handle installation 92
- Mb 118 92
- Mb 118 mobile mounting bracket installation 92
- Mobile mounting bracke 92
- Option installations 92
- Ci v connection example 93
- Control command 93
- Data format 93
- Remote jack ci v information 93
- Command table 94
- Control command 94
- D command table 94
- Control command 95
- Band stacking register 96
- D band stacking register 96
- D data mode with filter width setting 96
- Data mode with filter width setting 96
- X x x x 96
- General 97
- Receiver 97
- Specifications 97
- Transmitter 97
- Options 98
- About ce 100
- As different exposure limits have been recommended for different frequencies a relative table shows a guideline for installation considerations 100
- Below 30 mhz the recommended limits are specified in terms of v m or a m fields as they are likely to fall within the near field region similarly the antennas may be physically short in terms of electrical length and that the installation will require some antenna matching device which can create local high intensity magnetic fields analysis of such mf installations is best considered in association with published guid ance notes such as the fcc oet bulletin 65 edition 97 01 and its annexes relative to amateur transmitter installations the ec recommended limits are almost identical to the fcc specified uncontrolled limits and tables exist that show pre calculated safe distances for different antenna types for different frequency bands further information can be found at http www arrl org 100
- For amateur base station installations it is recom mended that the forward clearance in front of the an tenna array is calculated relative to the eirp effec tive isotropic radiated power the clearance height below the antenna array can be determined in most cases from the rf power at the antenna input termi nals 100
- For the bands 10 mhz and higher the following power density limits have been recommended 10 50 mhz 2 w sq m 100
- Forward clearance by eirp output 100 watts 2 m 1000 watts 6 m 10 000 watts 20 m 100 000 watts 65 m 100
- In all cases any possible risk depends on the trans mitter being activated for long periods actual recom mendation limits are specified as an average during 6 minutes normally the transmitter is not active for long periods of time some radio licenses will require that a timer circuit automatically cuts off the transmitter after 1 2 minutes etc 100
- Installation notes 100
- List of country codes iso 3166 1 100
- Similarly some modes of transmission ssb cw am etc have a lower average output power and the as sessed risk is even lower 100
- The figures assume the worst case emission of a constant carrier 100
- This warning symbol indicates that this equipment operates in non harmonised frequency bands and or may be subject to licensing conditions in the country of use be sure to check that you have the correct version of this radio or the correct pro gramming of this radio to comply with na tional licensing requirement 100
- Typical amateur radio installation exposure distance assumes that the predominant ra diation pattern is forward and that radiation vertically downwards is at unity gain sidelobe suppression is equal to main lobe gain this is true of almost every gain antenna today exposed persons are assumed to be beneath the antenna array and have a typical height of 1 m 100
- Versions of the ic 7200 which display the ce symbol on the serial number seal comply with the essential requirements of the european radio and telecommunica tion terminal directive 1999 5 ec 100
- Vertical clearance by eirp output 1 watts 2 m 10 watts 2 m 25 watts 3 m 100 watts 5 m 1000 watts 12 m 100
- Declaration of conformity 101
- Ic 7200 101
- Version and frequency coverage 101
- Band voltage modification 102
- Caution 102
- Back cover 104
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Ответы 1
Какие действия необходимо выполнить перед первым включением питания трансивера?
2 года назад