Specifications
Decode and analyse signals, develop new decoders

go2DECODE

go2DECODE, offers signal demodulation, recognition, decoding, voice detection, technical signal analysis and advanced decoder development tools. Use this software, if you like to analyse protocols and demodulator's or if you have to implement new protocols into your go2MONITOR solution.

Specifications

System

Parameter Specification
Data acquisition - Digital IF (complex baseband I/Q)
- Sound card
- Digital AF (WAV 8, 16, 32 Bit)
- RAW IF File Format
- Receiver streaming and control
- Others on request
Localisation - English
- German
- Others on request
Documentation - Printed user manual
- PDF Online-Help
Recommended PC hardware - Min. Intel I5 2 Core, 2 MHz, 4 GB RAM
- HDD: min. 500 GB recommended (depends on recordings)
- Screen Resolution: min. 1280 x 1024 pixel
- Sound card for analog input
- Fast Ethernet for digital IF input
OS - Windows 7 / 10 64 bit Englis or German
- Linux on request
Result files - Deocoding results
- TXT-File with decoded text
- XML-File with decoded text and metadata
- Signal recordings
- Voice recordings
- Bitstream *.rec files (bits and quality of each bit)
- Bitstream *.txt files (bits)
Voice detection, demodulation, recording Modulation types:
- AM, FM, USB, LSB, DSB
- Detection: voice yes/no
- Nominal frequency
- Voice Pitch
- Demodulation
- AF Recording
Sonagram Viewer - Standalone application for spectrum/sonagram display
Signal recordings - IF
- AF
- Start / Stop
- manual by operator or automatic by trigger
trigger types
- Configurable squelch level
- Signal detected
- Transmission method recognised
- Transmission method unknown
- Voice detected
File formats: WAV / RAW

Analysis

Analysis Items
Displays - Spectrum
- Spectrogram/Sonagram
- Autocorrelation
- Constellation
- Eye pattern
- Time (oscilloscope)
- Analysis (magnitude, frequency and phase)
- Hell
- Bit
Squaring - Squaring: 0, 1, 2, 3
Windowing - Rectangle
- Hanning
- Hamming
- Kaiser
- Flattop
- Blackman
Cursors - Harmonic
- Crosshair
- 2 cursor mode
Center frequency - Adjustable
Operating modes - Online
- Offline

Decoder Development Language (DDL)

Decoder Development Item
Basic functions - Modification of standard decoders
- Definition of new decoders
- Integration of existing decoders
Function library - Pre-processing
- Symbol conversions
- Descrambling procedures
- Channel selections
- Pattern search
- Burst detection
- Forward/backward time jumps
- Deinterleaving
- Check and correction procedures: CRC, Hamming, Viterbi, BCH, Reed-Solomon
- Elementary arithmetic and bit manipulations
- Table handling
- Various output formats, fonts, channels
- Control of demodulation and decoding
- Setting of demodulator parameters
- Selected voice codecs
- Branches and sub-routines
- Call of external dll's
- Special functions on request
Decoder Editor - Automatic command completion
- Content related help
- Syntax highlighting
Decoder Compiler - Generation of binary decoder files
- Detailed code Check and error messages
Debugger (go2DECODE-P) - Breakpoints
- Single-step mode
- Display of variable contents
- Editing of variable contents
- Display of all input data packages
- Display of internal data buffer and current read position
- Advanced analysis of recognition, demodulation and decodin

SOMO, Signal Generator (go2DECODE-P)

Signal Generator Item
Modulations - ASKn
- PSKn (single and multi channel)
- QAMn (single and multi channel)
- ASKnPSKm (single and multi channel)
- NCPFSKn
- FSKn (single and multi channel)
- MSK (single and multi channel)
- GMSK (single and multi channel)
- F7B
- TFM3
- TFM5
- Morse/CW
- Sine
- Rectangle
- Saw tooth
- Triangle
- AM and FM modulation (from wav files)
- LSB and USB (from wav files)
- Noise
Function - Generation of single and multi channel, continuous and burst
- Primary modulation
- Variable modulation parameters
- Attenuation
- Center frequency
- Baud rate
- Pulse shapes: RC pulse, RC/RRC spectrum, Gauss pulse
- Burst parameters
- 20/40 kHz bandwidth
Coding - Binary
- Baudot
- ASCII
- HC ARQ
- ITA2
- Differential/absolute coding
- Convolutional encoding / Viterbi
- CCITT standards V.17 ... V.33
- Variable bit stream, bit order, parity
- Various scrambling algorithms
Output - Sound card
- wav files
- Streams

Decoders and Demodulators

  1. MIL and PMR decoders may need an End-User-Certificate (depends on the country of the user)
  2. One decoder = one line (to shorten the list). For the full list, download the actual decoderlist
  3. Slow multitone modems are recommended to operate with fixed nominal frequency
  4. Obsolete decoders, end of live: See more information

Demodulators

Demodulator Name Remarks
AM / A3E  
Analogue Selcall  
ASK 2/4  
ASK2PSK2 (ASK4)  
ASK2PSK8  
ASK4PSK8  
Chirp  
CLOVER 2000  
CLOVER 2500  
CLOVER II  
Coquelet  
DPSK 2, 4, 8, 16 A/B  
F1A  
F6/F7B  
FM / F3E  
FSK 2 matched filter  
FSK 2, 3 auto-shift  
FSK 2, 3, 4 discr.  
LINK-11  
MDPSK 2, 4, 8, 16 A/B  
MFSK  
Morse, CW  
MPSK 2, 4, 8, 16 A/B  
MSK / GMSK  
MT63  
Multchannel FSK2  
MultiModem  
Multitone (MFSK)  
OFDM  
OQPSK  
PACTOR II/III  
PSK 2, 4, 8, 16 A/B  
PSK data aided Fast adaptive equalizer using known training sequences (via DDL)
PSK Soft Decision  
QAM16  
QAMn (16, 32, 36, 64, 128, 144, 256)  
TFM3  
THROB/THROBX  
USB-LSB / J3E  

Decoders

No Decoder, Release 17.1 Alias, Remarks Src Type
1 ACARS VHF   X VUHF
2 AIS   X VUHF
3 Alcatel 801H Alcatel 801H, detection only, X HF
4 ALE 2G MIL-188-141A; MIL-188-141B; ALE-400 X HF
5 ALE 3G MIL-188-141B App. C; STANAG 4538 - MIL
6 ALIS MERLIN; RS-ARQ X HF
7 ALIS 2 detection only X HF
8 APCO-25 P-25 - PMR
9 ARQ6-90 CCIR 518 Variant X HF
10 ARQ6-98 CCIR 518 Variant X HF
11 ARQ-E 4/8 cycle ARQ-1000 duplex X HF
12 ARQ-E3 CCIR 519 Variant; TDM 342 1 Channel X HF
13 ARQ-M2-242 ARQ-28; CCIR 242; CCIR 342; TDM 242 X HF
14 ARQ-M2-342 ARQ-58; TDM 342 X HF
15 ARQ-M4-242 ARQ-28; CCIR 242; CCIR 342-2; TDM 242 X HF
16 ARQ-M4-342 ARQ-58; TDM 342 X HF
17 ARQ-N ARQ-1000 duplex X HF
18 ASCII 7Bit   X HF
19 ASCII 8Bit   X HF
20 ATIS   X VUHF
21 Autocab   X VUHF
22 AUTOSPEC SPREAD 11; SPREAD 21 X HF
23 Baudot async 1.5 stop bit   X HF
24 Baudot sync   X HF
25 Baudot sync 2 stop bit   X HF
26 Baudot universal Arabic, Cyrillic, Hebrew Alphabets X HF
27 BIIS   X VUHF
28 BULG-ASCII IRA-ARQ X HF
29 CHN 4+4   - MIL
30 CHU   X HF
31 CIS 405 3915 CIS 40.5; FROST1 X HF
32 CIS FSK 200/500   X HF
33 CIS-11 TORG 10/11 X HF
34 CIS-12 CIS AT3104; CIS-20; FIRE; MS5 X HF
35 CIS-14 AMOR; AMO 96; TORG 14 X HF
36 CIS-36 CIS 10 11 11; CROWD-36 X HF
37 CIS-36-50 BEE; T-600 X HF
38 CIS-81-81 CIS 81; CIS 81-29; Frost X HF
39 Clansman FSK300   X HF
40 Clover 2000   - HF
41 Clover 2000 Broadcast   - HF
42 Clover 2500   - HF
43 Clover 2500 Broadcast   - HF
44 Clover II   - HF
45 CODAN 3012 16 Channel PSK additional raw hex output, descrambled - HF
46 CODAN 3012 Chirp CODAN 9001 Chirp - HF
47 CODAN 3212 1 Channel PSK only 600 and 1200bps fully supported - HF
48 CODAN 3212 16 Channel PSK Includes CODAN 3012 - HF
49 CODAN Selcal CODAN 8580; CCIR 493-4 - HF
50 Contestia 8/16/32   X HF
51 Coquelet-13 Coquelet-Mk1 X HF
52 Coquelet-8 Coquelet-Mk2 X HF
53 Coquelet-80 Coquelet-8 FEC X HF
54 CV-786   - MIL
55 DGPS   X HF
56 DMR MotoTRBO, for burst emissions - PMR
57 DMR Continuous MotoTRBO, for continuous emissions - PMR
58 dPMR   - PMR
59 DSC-HF GMDSS X HF
60 DSC-VHF GMDSS-VHF X VUHF
61 D-STAR     PMR
62 DUP-ARQ ARTRAC X HF
63 ERMES   X VUHF
64 F7B Morse   X HF
65 F7B Morse/Baudot 2 channel ITA-2 RTTY; Baudot F7B; BF6 Baudot; ITA-2 Twin X HF
66 FEC-A FEC 100, FEC 101 X HF
67 Flex   X VUHF
68 FMS-BOS   X VUHF
69 FSK 400/500 detection only X HF
70 Globe Wireless FSK Globe Wireless Pactor; GW DATAPLEX X HF
71 Globe Wireless OFDM detection only - HF
72 Globe Wireless PSK GW DATAPLEX X HF
73 Golay Pager Golay/GSC X VUHF
74 G-TOR Golay X HF
75 HC-ARQ Haegelin-Cryptos X MIL
76 HFDL ACARS HF X HF
77 HNG-FEC   X HF
78 INMARSAT AERO-C physical layer only) X SHF
79 INMARSAT AERO-P physical layer only) X SHF
80 INMARSAT AERO-R physical layer only) X SHF
81 INMARSAT AERO-T physical layer only) X SHF
82 INMARSAT-C TDMA detection only X SHF
83 LINK-11 CLEW STANAG 5511; TADIL A; TADIL B X MIL
84 LINK-11 SLEW STANAG 5511 SLEW - MIL
85 MD-674   - HF
86 MEROD RACAL-ARQ; RAC-ARQ X HF
87 MFSK-16   X HF
88 MFSK-8   X HF
89 MIL-188-110 16 Tone only raw output - MIL
90 MIL-188-110 39 Tone   - MIL
91 MIL-M-55529A MD-522 - MIL
92 Mobitex 1200 Mobitex 80 X VUHF
93 Mobitex 8000 Mobitex 400 X VUHF
94 Morse CW-Morse X HF
95 MPT1327 1200Bd MSK   X PMR
96 MT63   x HF
97 NMT450   X VUHF
98 NUM 13 SP 14 X HF
99 NXDN 2400/4800Bd IDAS; NEXEDGE - PMR
100 Olivia 8-16-32 X HF
101 Packet   X HF
102 Packet 600/1200   X VUHF
103 Packet 2400/4800/9600   X VUHF
104 PACTOR I incl. decoding of Robust Connect bursts X HF
105 PACTOR I FEC   X HF
106 PACTOR I/II/III Includes all PACTOR modes I/II/III - HF
107 PACTOR II   - HF
108 PACTOR II FEC   - HF
109 PACTOR III   - HF
110 PACTOR-4 post-processing (decompression) of airmail/sailmail emissions, if possible - HF
111 Panther-H Sync detection synchronisation bursts only   MIL
112 Piccolo MK12 Piccolo 12 X HF
113 Piccolo MK6 Piccolo 6 X HF
114 POCSAG 512/1200/2400 CityRuf X VUHF
115 Pol-ARQ CCIR 518 Variant X HF
116 PSK10 BPSK-10 X HF
117 PSK125/250 BPSK125/250 variant of PSK31 with higher baud rate X HF
118 PSK31 BPSK31 X HF
119 PSK31-FEC PSK31F X HF
120 PSK63 BPSK63, variant of PSK31 with higher baud rate X HF
121 PSK63/125/210-FEC variant of PSK31 with FEC X HF
122 PSK-AM 10/31/50   X HF
123 QPSK31/63/125/250/500   X HF
124 RUM-FEC ROU-FEC; Saud-FEC X HF
125 SELCAL CCIR-1 SELCAL PCCIR, only for nominal frequency mode X VUHF
126 SELCAL CCIR-2 SELCAL CCIR-7, only for nominal frequency mode X VUHF
127 SELCAL CCITT only for nominal frequency mode X VUHF
128 SELCAL DTMF sub for baseband demodulation X VUHF
129 SELCAL EEA MPT1316, only for nominal frequency mode X VUHF
130 SELCAL EIA only for nominal frequency mode X VUHF
131 SELCAL EURO only for nominal frequency mode X VUHF
132 SELCAL EURO5 SELCAL EURO, only for nominal frequency mode X VUHF
133 SELCAL MODAT only for nominal frequency mode X VUHF
134 SELCAL NATEL only for nominal frequency mode X VUHF
135 SELCAL VDEW only for nominal frequency mode X VUHF
136 SELCAL ZVEI SELCAL DZVEI; PDZVEI; PZVEI;ZVEI-1; ZVEI-2; ZVEI-3 X VUHF
137 SI-ARQ ARQ-S X HF
138 SI-FEC FEC-S X HF
139 SITOR-A SITOR-ARQ; AMTOR; CCIR 476 A X HF
140 SITOR-B SITOR FEC; CCIR 476 B; TOR dirty X HF
141 SP14 NUM 13 X HF
142 SPREAD 51   X HF
143 STANAG 4197 audio codec not part of installation - MIL
144 STANAG 4285 Terminal Mode: ASCII8, Baudot, STANAG 5066, HEX - MIL
145 STANAG 4415 MIL-188-110A/B ser. (partly), 75bps - MIL
146 STANAG 4481 (FSK) with detection of KG-84 encryption - MIL
147 STANAG 4481 (PSK)   - MIL
148 STANAG 4529 Terminal Mode: ASCII8 & Baudot, HEX - MIL
149 STANAG 4539 MIL-188-110A/B ser. (partly), 150-4800 Bit/s - MIL
150 STANAG 4539 HDR MIL-188-110B App.C (partly), 3200 - 4800 Bit/s - MIL
151 STANAG 5065 (also Part of MIL188-110A/B) - MIL
152 SWED-ARQ ARQ-SWE; CCIR 518 Variant X HF
153 Tetra   - PMR
154 Tetra DMO   - PMR
155 Tetra Uplink   - PMR
156 Tetrapol detection only - VUHF
157 Thales System 3000 Skymaster selcal detection only   MIL
158 THROB1/2/4   X HF
159 THROBX1/2/4   X HF
160 Turkish Navy FSK   X MIL
161 Twinplex   X HF
162 VDL 2   X VUHF
163 VDL 3   X VUHF
164 Visel FEC12; YUG-MIL X HF
165 Voice A3E Air Traffic AM X VUHF
166 Voice A3E/J3E   X HF
167 Voice F3E - SELCAL CTCSS MPT1306, FM X VUHF
168 Voice F3E - SELCAL DTMF SELCAL DTMF; FM X VUHF
169 Voice J3E - USB - SELCAL ICAO Annex-10 X HF
170 Voice J3E-LSB   X HF
171 X06-Mazielka   X HF

Receiver List

Brand Receiver max Bw
MHz
Panorama Scan Comments
Airspy Airspy 8     ExtIO (experimental)
CommsAudit CA78XX       ExtIO, ask
CommsAudit CA79XX       VITA-49, ask
ExtIO   Max. receiver bandwidth     Experimental support
GEW gRX-LAN 1     ExtIO
GEW PxGF       ask
IZT 3XXX 20 x x Up to 3 channels + spectrum
IZT 40XX 1     SignalSuite, 1 channel only
Microtelecom PERSEUS 0.8     Limited USB3 compatiblity
NARDA IDA2 0.32      
NARDA NRA-3000 0.32      
NARDA NRA-6000 0.32      
National Instruments ETTUS USRP       EXtIO
National Instruments N200       ExtIO
National Instruments Others       ask
NOXON RTL2832U 3.2     ExtIO
PLATH DBT 5400 + VDC       ask
PLATH SIR2110 20      
PLATH SIR5110 Full HF      
PLATH SIR5115 Full HF      
RFSPACE SDR14 0.19      
RFSPACE SDRIQ        
Rohde & Schwarz EB200       ask
Rohde & Schwarz EM100 0.5 x x  
Rohde & Schwarz EM510       ask
Rohde & Schwarz EM550        
Rohde & Schwarz ESMD       ask
Rohde & Schwarz PR100 0.5 x x  
SDRplay RSP1 6.5     ExtIO
SDRplay RSP2 6.5     ExtIO
thinkRF WSA500-427 0.75     VITA49
VITA-49         ask
WiNRADiO WR-G31DDC 0.8     ExtIO
WiNRADiO WR-G33DDC 4 x    
WiNRADiO WR-G39DDC 4 x   Up to 2 channels + spectrum
x Others         on request
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