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[Afonso Marques]

Relembrando os códigos dos diferente tipos de emissões de rádio...

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CT1RH

 

Radio Emission Codes

Radio Emission Codes are specified using three symbols as shown below:
First symbol - Type of modulation of main carrier
Second symbol - Nature of modulating signal
Third symbol - Nature of transmitted signal 

The principal symbols are listed below: 	
First Symbol	 Type of Modulation	
A
B
C
D
F
G
H
J
K
L
M
N
P
R 	Double sideband, AM
Indipendent sideband, AM
Vestigial sideband, AM
Amplitude/Angle modulation
Frequency modulation
Phase modulation
Single sideband full carrier
Single sideband suppressed carrier
Pulses, amplitude modulated
Pulses, width or duration modulated
Pulses, phase or position modulated
Unmodulated carrier
Pulses, unmodulated
Single side band reduced or variable carrier 	
Second Symbol	 Nature of Modulating Signal	
0
1
2
3
7
8 	No modulation signal
On/Off modulation (keyed CW)
Modulation sub carrier (keyed MCW)
Analogue modulation (voice)
Two or more channels on one frequency offering keyed telegraphy
Two or more channels on one frequency offering telephony (voice) 	
Third Symbol	 Type of Information Being Transmitted	
A
B
C
D
E 	Telegraphy for aural reception
Telegraphy for automatic reception
Facsimile
Telemetry
Telephony 	




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