Icom IC-7200 Support Question
Icom IC-7200 Support Question
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Question posted by baudauxguy on February 27th, 2023
Mauque Manifeste De Puissance 0 Mon Trasceiver Iv 7200
Sur charge fictive en CW l'appareil délivre seulement 50 W au lieu de 100 et l'indicateur ALC monte au maximum (bouton ANF) D'où cela vient-il ?
Current Answers
Answer #1: Posted by SonuKumar on February 27th, 2023 7:30 AM
SonuKumar
Member since:
May 9th, 2021 Points: 16,621,300
Member since:
May 9th, 2021 Points: 16,621,300
The ALC (Automatic Level Control) circuit in a transceiver such as the Icom IC-7200 is designed to maintain a consistent output power level by adjusting the gain of the final amplifier. The ALC circuit monitors the output power level and adjusts the drive level to the final amplifier accordingly.
In your case, it seems that the ALC circuit is detecting an overdrive condition and is reducing the gain of the final amplifier, resulting in a lower output power level of 50 W instead of the expected 100 W. The fact that the ALC indicator is going up to the maximum is an indication that the ALC circuit is working as intended and is reducing the gain of the final amplifier to prevent damage to the transmitter.
The cause of the overdrive condition could be due to a number of factors such as incorrect transmitter settings, incorrect antenna impedance, or a fault in the transmitter circuitry. It is recommended that you consult the user manual of the Icom IC-7200 and ensure that the transmitter settings are correct for the operating mode you are using. You may also want to check the antenna and its matching network to ensure that the impedance is within the operating range of the transceiver. If the issue persists, it may be necessary to have the transmitter checked by a qualified technician to diagnose and repair any faults in the circuitry.
Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful.
Regards,
Sonu
Your search handyman for all e-support needs!!
Related Icom IC-7200 Manual Pages
Instruction Manual - Page 3
... marks of the transceiver.
R WARNING!
R NEVER apply more than the linear amplifier's maximum input level, otherwise, the linear amplifier will be observed when operating this could void your...This device emits Radio Frequency (RF) energy. NEVER touch an antenna or internal antenna connector during transmission. Safe driving requires your authority to the IC-7200 may damage the ...
Instruction Manual - Page 6
... DESCRIPTION
■ Front panel
Speaker
q
Function Display (p. 7) w e r t
i72 00
MODE TS TUNER FILTER
SPCH
NB
NR
ANF METER
V/M
1 1.8
A=/B
2 3.5
SPLIT
3 7
MW
4 10
M-CL
5 14
AGC
6 18
COMP271
RIT
.
The noise... time; TWIN PBT
TWIN PBT
+
e NR KEY NR (p. 50) ➥ P ush to allow maximum clarity without harming the intelligibility of the variable range depends on the...
Instruction Manual - Page 7
...PANEL DESCRIPTION
r ANF/METER KEY
ANF METER
(p. 51)... an adjustable narrow DSP filter that automatically identifies and attenuates beat tones, tuning signals, CW, etc., even if they are available.
(p. 5)
➥ After pushing and holding...(pgs. 30, 60)
PO ➟ SWR ➟ ALC
• PO : indicates the relative RF output power.
• SWR : indicates the SWR over...
Instruction Manual - Page 19
...
i72 00
MIC The AFSK modulation signal can be input from [MIC]. (p. 19)
MODE TS TUNER FILTER
SPCH
HEADPHONES
NB
NR
ANF METER
V/M
1 1.8
A=/B
2 3.5
SPLIT
3 7
MW
4 10
M-CL
5 14
AGC
6 18
COMP271
.
SP-21... (p. 93)
ACC SOCKET (p. 10)
[SEND], [ALC] (p. 17) Used for computer control and transceive operation. RIT GENE
SCAN
8 24
MNF
0 50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
...
Instruction Manual - Page 22
... the linear amplifier instruction manual. To an antenna
RF OUTPUT RF INPUT SEND
ALC
The IC-7200 SEND line is exceeded, a larger external relay must be used.
50 ø coaxial cable
Transceiver
[ANT]
Non-Icom linear amplifier
[SEND]
[ALC]
17
Non-matched ALC and RF power settings could cause a fire or damage the linear amplifier. Be...
Instruction Manual - Page 27
...stored frequency. MODE TS TUNER FILTER
SPCH
NB
NR
ANF METER
V/M
1 1.8
A=/B
2 3.5
SPLIT
3 ... 10 11 12 13 14 15 16 17 18 19 20 21
22 GENE
SCAN
8 24
MNF
0 50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
M-CH/RIT SET
Push and hold for stations.
e... and modes with the keypad or the memory copy function (p. 63).
The IC-7200 has two VFOs, specially suited for 1 sec. q Push and hold...
Instruction Manual - Page 34
... disabled in the IC-7200: SSB (USB/LSB), SSB data (USB data/LSB data), CW, CW-R (CW Reverse), RTTY, RTTY-R (RTTY Reverse), AM and AM data modes. RIT GENE
SCAN
8 24
MNF
0 50
VOX
9 28...Appears
29 MODE TS TUNER FILTER
SPCH
NB
NR
ANF METER
V/M
1 1.8
A=/B
2 3.5
SPLIT
3 7
MW
4 10
M-CL
5 14
AGC
6 18
COMP271
. RIT GENE
SCAN
8 24
MNF
0 50
VOX
9 28
F-INP ENT BAND
P.AMP ATT...
Instruction Manual - Page 35
...CW RTTY AM
SET MODE SETTING
AUTO
SQL
RF + SQL
RF GAIN
SQL RF GAIN + SQL
SQL
SQL RF GAIN + SQL
❍ Adjusting RF gain (Receive sensitivity) Normally, the [RF/SQL] control is fixed at maximum...S-me-
GENE
SCAN
8 24
MNF
0 50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
...
ANF METER
V/M 1 1.8
A=/B
2 3.5
SPLIT
3 7
MW
4 10
M-CL
5 14
AGC
6 18
COMP271
RIT
.
Indicates the ALC ...
Instruction Manual - Page 36
...ALC zone w Push and hold
M-CH/RIT SET
for 1 sec. e Push and hold
ANF METER
for 1 sec. r Rotate [M-CH] to enter the
quick set mode.
RIT GENE
SCAN
8 24
MNF
0 50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
M-CH/RIT SET
[M-CH]
When maximum output power "100... into the microphone at "Microphone gain setting" as the IC-PW1/EURO, set mode and re-
to transmit.
&#...
Instruction Manual - Page 37
MODE TS TUNER FILTER
SPCH
NB
NR
ANF METER
V/M
1 1.8
A=/B
2 3.5
SPLIT
3 7
MW
4 10
M-CL
5 14
AGC
6 18
COMP271
RIT
. 3 BASIC OPERATION
■ Voice synthesizer function
The IC-7200 has a voice synthesizer. GENE
SCAN
8 24
MNF
0 50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
M-CH/RIT SET
q S elect the desired parameters to stop the announcement.
1 2 3 4 5 6 7 8 9 10 11...
Instruction Manual - Page 39
...50 watts ERP (Effective Radiated Power)
5.33050 MHz 5.34650 MHz
5.33200 MHz 5.34800 MHz
3
• 2.8 kHz bandwidth
5.36650 MHz 5.37150 MHz
5.36800 MHz 5.37300 MHz
4
It is impossible on 5 discrete frequencies and must adhere to the following:
IC-7200 Display Frequency*
FCC Channel Center Frequency*
2
• USB mode • Maximum....
However, the IC-7200 displays carrier
NOTE...
Instruction Manual - Page 48
... hold
M-CH/RIT SET
for
1 sec.
RIT GENE
SCAN
8 24
MNF
0 50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
M-CH/RIT SET
[M-CH]
...PC software, consult the manual that the ALC meter reading doesn't go outside the ALC zone.
NOTE: When the data mode...in the set
mode. (p. 77)
Band keys
MODE TS TUNER FILTER
SPCH
[DIAL]
NB
NR
ANF METER
V/M 1 1.8
A=/B
2 3.5
SPLIT
3 7
MW
4 10
M-CL
5 14
AGC...
Instruction Manual - Page 55
...50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
M-CH/RIT SET
Appears
Noise reduction OFF NR Level 0
Noise components
Noise reduction is activated NR Level 4 (default)
Desired signal (CW)
D Noise reduction level setting
q P ush and hold M-CL for 1 sec.
Appears
MODE TS TUNER FILTER
SPCH
NB
NR
ANF... hold NR for maximum readability as described below. Set the noise reduction level for 1 sec.
Instruction Manual - Page 60
... set mode. to
normal operation.
w S et the semi break-in function ON in the set...to VOX operation for voice.
RIT GENE
SCAN
8 24
MNF
0 50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
M-CH/RIT SET...CW and CW-R modes. The IC-7200 is selected, push and hold
M-CH/RIT SET
for 1 sec.
tion is used in CW mode to adjust the keying speed. (p. 72)
Appears
MODE TS TUNER FILTER
SPCH
NB
NR
ANF...
Instruction Manual - Page 62
... 1 sec.
RIT GENE
SCAN
8 24
MNF
0 50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
M-CH/RIT SET
[DIAL]
[M-CH]
q P ush MODE to 10. • Push and hold COMP for 1 sec.
fault value. w P ush and hold M-CL for 1 sec. 6 FUNCTIONS FOR TRANSMIT
■ Speech compressor
The IC-7200 has a built-in the quick set...
Instruction Manual - Page 65
... TS TUNER FILTER
SPCH
NB
NR
ANF METER
V/M
1 1.8
A=/B
2 3.5
SPLIT
3 7
MW
4 10
M-CL
5 14
AGC
6 18
COMP271
RIT
. r P ush [PTT] to
select the SWR meter. ■ Measuring SWR
The IC-7200 has a built-in this range....
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
60 several times to transmit; GENE
SCAN
8 24
MNF
0 50
VOX
...
Instruction Manual - Page 72
...CW...point for the HF and 50 MHz bands. • When connecting the AT-180, the IC-7200's output power must be tuned...• the antenna SWR (p. 30;
MODE TS TUNER FILTER
SPCH
TUNER
NB
NR
ANF METER
V/M
1 1.8
A=/B
2 3.5
SPLIT
3 7
MW
4 10
M-CL
5 ... 50 MHz
bands.
Although termed "through inhibit condition. In such cases, manual tuning is necessary each frequency range (100 ...
Instruction Manual - Page 73
...Maximum input power : 120 W
• Minimum tuning power : 8 W
• Matching impedance range : 16.7-150 Ω (HF band)
20-125 Ω (50 MHz band)
• Tuning accuracy
: Less than SWR 1.5:1
• Insertion loss
: Less than 3:1. w S et... band voltage output.)
t ALC ALC output voltage (-4 to 0 V). r NC
(*If the modification is higher than ...
Instruction Manual - Page 75
...et the desired condition or value using [DIAL].
• Push and hold M-CL for 1 sec.
r S et...50
VOX
9 28
F-INP ENT BAND
P.AMP ATT
M-CH/RIT SET
[DIAL]
[M-CH]
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
70 to
normal operation.
The IC-7200...] to select the desired item. MODE TS TUNER FILTER
SPCH
NB
NR
ANF METER
V/M
1 1.8
A=/B
2 3.5
SPLIT
3 7
MW
4 10
...
Instruction Manual - Page 101
... TRANSCEIVER
Type-designation: iC- 7200
Version (where applicable): This compliance is based on our sole responsibility that this equipment complies with the following harmonised standards, specifications or documents: i) EN 301 489-1 v1.6.1 (September 2005) ii) EN 301 489-15 v1.2.1 (August 2002) iii) EN 301 783-2 v1.1.1 (September 2000) iv) EN 60950-1 : 2001
Düsseldorf 30th Jun...
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