go2MONITOR Specification

General

Classifier/Recognition:

  • The minimum signal length for the wideband modulation classifier is 100 ms.
  • Using the decoder (Recognition & Decoding) , the software is able to detect and process signals with a signal length of at least 1 ms.

Decoders and Demodulators:

  • MIL and PMR decoders may need an End-User-Certificate (depends on the country of the user)
  • One decoder = one line (to shorten the list). For the full list, download the actual decoderlist
  • Slow multi tone modems are recommended to operate with fixed nominal frequency
  • Decoder source code is only part of go2DECODE delivery (as go2MONITOR has no DDL compiler)

Receivers:

  • The list can be extended on customer requests.
  • It is possible to connect multiple wide band an narrow band receivers to the software.

System

Feature Remarks
Data acquisition Multiple signal inputs simultaneously possible, depending on configuration
2 wideband inputs in parallel. Other configurations on request
Data acquisition receiver Frequency, Bandwidth, AGC, ATT controls etc. Digital IF (complex baseband I/Q), bandwidth up to 20 MHz (1 MHz in standard version)
Data acquisition streaming Digital IF (complex I/Q), bandwidth up to 20 MHz coherent (1 MHz in basic version), generic PROCITEC/PLATH format,
VITA 49
PXGF
Data acquisition file Digital IF (complex baseband I/Q 32bit), bandwidth up to 1 MHz (standard) or up to 20 MHz (with option WCL)
Playback of standard wav files, AF/IF ( WAV 8, 16, 32 Bit)
Playback of TCI Blackbird CAP, Perseus,WiNRADiO, SDR#, SDR-Console recordings (correct frequency and time display, if availble)
Processing faster than real time
Others on request
Audio Input DANA on request
Data output Visual decoder result output, configurable using XSLT
Continuous saved in files and Postgres SQL data base
Protocol detection and production down to the content (text, audio, binaries)
Timestamps for each XML meassage
Symbols are recordid in rec files for go2ANALYSE
IQ files for later analysis
Export functions
Classifier 1 MHz bandwidth standard, (up to 2.4 on HF and 5, 10 or 20 MHz on VHF/UHF/SHF with option WCL
Manually triggered or repetitive snapshots (at 10, 20, . . . sec intervals)
Continous mode with option AMT
Note:
- 80 MHz VHF/UHF/SHF -> 4 x 20 MHz setup
- 30 MHz HF -> 13 x 2.4 MHz setup
Demodulators Universal and specialized demodulators with AGC and AFC
Automatic synchronization of the baud rate (no problems if files are recorded on inaccurate devices)
Recording of bitstreams for go2ANALYSE
Decoders/Channels 1, 2, 4 , 8 or or more in steps of 32 (with option WMPC)
Automatic change of decoder if signal changes in "Recognition + Decoding" or "Classification + Recognition + Decoding mode
Custom defined decoder lists for automatic decoding
Programmable DDC bandwidth
Buffering for lossless decoding (No loss of data during analyzing and protocol changes)
Python language based Decoder Description Language (pyDDL/DDL)
Custom defined decoders (requires go2DECODE)
GUI Simple and intuitive to operate user interface
Supports multiple monitors
Supports simultaneous multiple receivers and mutliple narrowband channels
Drag-and-drop of frequencies, classifier results, stations
Receiver control (Wideband, Narrowband, Multiple Wideband)
Panorama display, Wideband Spectrum (FFT) and Spectrogram
Decoder/Channel windows for manual control
Classifier display
Frequencies/Blocked Frequenceies window
Ressources display
Bulk file processing window
Scripting editor
Mission statistic display
ResultViewer
ResultViewer Display of decoder output, demodulated audio files (CW, TETRA etc.), text output (BAUDOT, HFDL, etc.), binary files
Audio demodulation and playback
Display of recognized modems (protocols)
Display of wide-/narrow band classification results
Display of recorded wide-/narrowband IF-signals
Advanced filter on results details, timem frequency, position, modulation, decoders etc.
Display in table or graphic view (time vs. frequency)
Data filtering using GUI, SQL or scripting
Pythonscripting based data structuring (user-defined)
Recording Up to 1 MHz
Up to 20 MHz with option WCL and WBR
Narrowband DDC channels up to 1 MHz (1.5 MHz with option WCL)
Bitstream
Signal Generator SOMO, for standard test signals., requires go2DECODE-P
Alphabets Can be added to the decoder, configurable (requires go2DECODE)
Own decoders Add your own decoders using go2DECODE and our "Decoder Development Language"
Third party decoder Interface to the DDC channel stream
Interface to the audio output (VAC, virtual audio cable)
Post Processing
Metadata extraction		 Post-processing of the data output with PYTHON software moduls (extraction of callsigns, sender ID, recipient ID, position, meta data, etc.)
Expandable by user
Option: AMT Automatic Monitoring and Tasking
Full automatic mission based monitoring (decoding, recording, classification)
Mission and tasks based on time, frequencies (ranges), RX location, classification, modulation, decoders, modulation parameters
Overview over decoded, classified or recorded signals
Powerful filtering functions
Continuous classification
Live view in ResultViewer (continuous update) provides a fast overview over decoded, recorded and classified signals
Option: NRC Narrowband Receiver Control (Hand-Off Narrowband Receiver)
Frequency independent production on 1/2/4 or 8 production channels
Narrowband receivers offer a better sensitivity compared to wideband receivers
Narrowband receivers consume less resources, as no DDC is required
Monitor signals in different frequency ranges
Possibility to add "virtual" receivers using ExtIO, which can connect to third parties DDC's or streams
Option: WCL 5 , 10 or 20 MHz Wideband Input and Classification
- VHF/UHF/SHF: 5 MHz, HF: 1 MHz
- VHF/UHF/SHF: 10 MHz, HF: 1 MHz
- VHF/UHF/SHF: 20 MHz, HF: 2.4 MHz
Continuous emission tracking mode (with option AMT)
Snapshot mode
Wideband spectrogram display
Normally delivered as a package consisting of receiver, computer and software
Option: WMPC 16 or 32 Wideband Multi Production Channels
Extend the number of internal software DDC channels to up to a few hundreds (typical in steps of 16 or 32)
All channels working on internally recorded/bufferd signals (demodulation, decoder, narrowband classifier and narrowband recording)
Normally delivered as a package consisting of receiver, computer and software
Option: WBR 5, 10 or 20 Wideband Recording
Lossless recording of up to 5, 10 or 20 MHz digital IF IQ data in standard WAV files
Simultaneous storage of spectrum data for fast preview
Replay and signal extraction
Recording scheduler (with option ATM)
Normally delivered as a package consisting og receiver, computer and software
Option: NCL Narrowband Classifier
Additional automatic narrowband classifiers with command line control (or C++) and result interface
Mutiple narrowband classifier (number depends on license) classifies the signals in a recording
The processing is performed faster than real-time
Useful for backend integration
Option: HOPD Hopper Detection Unit
- VHF/UHF: Detection and recording of hopper signals in a 20 MHz range (Option WCL-20 and WBR-20 are required)
- HF: 2.4 MHz frequency range
Possibility to operate several HOPD units in parallel to detect hoppers in larger ranges
Training Very short training period
Same technology (decoders) as in large, top COMIT systems
Webinars from shoc
Remote Control ICD (Interface control Document)
API for C++ and Java
Introduction workshop
Documentation PDF user manual, PDF online help
ISO 9001:2015 Company is certified (not only hardware)
Localisation English or German, others on request
License USB-Dongle (CodeMeter)
License sharing on request
The AMBE+2 TM voice coding technology included in this product is protected by intellectual property rights, including patent rights, copyrights and trade secrets of Digital Voice Systems, Inc. This voice coding technology is licensed exclusively for use within this licensed product. The user of this technology is strictly prohibited from attempting to extract, remove, decompile, reverse engineer, or disassemble the object code, or in any other way convert the object code into a human-readable form.
US Patent Nos. #8,595,002, #8,359,197, #8,315,860, #8,200,497, #7,970,606, #6,912,495 B2, #6,199,037
PC hardware Min. Intel I5 4 Core, 2 GHz, 8 GB RAM for 4 channels version
Min. Intel I7 8 Core, 2 GHz, 16 GB RAM for 8 channels version
HDD: min. 500 GB recommended (depends on recordings)
Display min. 1920 x 1080 pixel or two displays 1280 x 1024 pixels, multiple monitrs recommended
Fast Ethernet for digital IF input
OS Windows 7 SP1 (with Microsoft Windows patch KB2999226) 64 bit, de/en
Windows 10, 64 bit de/en
Linux (CentOS/Redhat 7.5) 64 bit

Classifier

Signal Analysis

Many parameters can be analyzed using the classifier, if more details are needed, then go2DECODE can be used as an extension of go2MONITOR.

Classified Modulations

Modulation   HF VHF/UHF recognition quality (Eb/No),
detection rate > 90%, false alarms < 1%
max. signal bandwidth   50 kHz 50 - 300 kHz (depending on modulation type)  
Signal energy detection, min. SNR   6 dB 6 dB  
min. signal length   100 ms
(using recognition & decoding: 1ms)		 100 ms
(using recognition & decoding: 1ms)		  
Measurement interval   4 sec 4 sec  
         
Analog modulation types   J3E USB
J3E LSB
A3E AM
DSB-SC (optional)		 J3E USB
J3E LSB
A3E AM
F3E FM
DSB-SC (optional)		  
ASK2/4 Signal frequency > 300 MHz   1.2 - 25 kBd 20 dB
FSK2 m = 1 - 10 25 - 4800 Bd 1.2 - 25 kBd 11 - 15 dB
FSK2 m = 0.75 - 1.5   25 - 75 kBd > 25 dB
FSK4   25 - 4800 Bd 1.2 - 25 kBd 11 - 15 dB
GMSK m = 0.5 300 - 4800 Bd 1.2 - 125 kBd 14 - 16 dB
MCFSK2 m >= 1
2 - 64 ch		 40 - 250 Bd
120 - 1000 Hz ch spacing		 40 - 250 Bd
120 - 1000 Hz ch spacing		 17 dB
MCPSK 2, 4 A/B
MCDPSK 2, 4 A/B		 < 10 kHz signal bw
2 - 64 ch		 50 - 300 Hz ch spacing 50 - 300 Hz ch spacing 13 - 15 dB
MORSE   30 - 250 CPM 30 - 250 CPM  
MSK m = 0.5 100 - 4800 Bd 1.2 - 125 kBd 14 - 16 dB
Multitone FSKn 5 - 64 tones
(shift >sr)		 3 - 200 ms (5 - 330 Bd) 3 - 200 ms (5 - 330 Bd) 14 - 16 dB
OFDM 25 - 512 ch 25 - 200 Bd
30 - 250 Hz ch spacing		 25 - 200 Bd
30 - 250 Hz ch spacing		 14 - 18 dB
OTH Radar   detection only   FM-CW variants only
PSK 2 A/B
DPSK 2 A/B		   31.25 - 4800 Bd 1.2 - 125 kBd 7 - 10 dB
A/B Decision: 8 - 15 dB
PSK 4 A/B
DPSK 4 A/B		   31.25 - 4800 Bd 1.2 - 125 kBd 8 - 12 dB
A/B Decision: 10 - 15 dB
PSK 8 A/B
DPSK 8 A/B		   31.25 - 4800 Bd 1.2 - 125 kBd HF: 8 - 12 dB
A/B Decision: 10 - 15 dB
VHF/UHF: 10 - 14 dB,
A/B Decision: 12 - 15 dB
PSK16   300 - 4800 Bd 1.2 - 125 kBd 14 - 16 dB
QAM Order: 16, 32, 64 1600 - 4800 Bd 1.6 - 25 kBd 22 dB
WFM
(FM Broadcast only)		 65 MHz - 108 MHz   50 kHz - 300 kHz  

Classifier Output

Parameter Description O
F
D
M		 C
a
r
r		 F
S
K		 M
F
S
K		 M
S
K		 C
W		 P
S
K		 M
C
P
S
K		 Q
A
M		 A
S
K		 M
C
F
S
K		 V
o
i
c
e		 F
M
B
C		 U
n
k
n
Modulation The type of modulation and its probability x x x x x x x x x x x x x  
Pitch TBD                       x    
Type Type of voice like LSB, USB, AM , FM                       x    
Symbol
rate		 The symbol rate in Bd x   x x x   x x x x x      
Order Modulation order, number of symbol states             x x   x        
Version Version of PSK A or B             x x            
CPM Transmitted character per minute           x                
Dash Dot
ratio		 The ratio between the length of dashes and dots           x                
Shift The measured shift     x x x           x      
Channel
spacing		 The measured distance between tones in Hz x     x       x     x      
Frequency The receiver center frequency of the signal x x x x x x x x x x x x x *
Bandwidth The overall bandwidth of the signal x x x x x x x x x x x x x x
SNR The signal to noise ratio in dB x x x x x x x x x x x x x x
Signal time Time of measurement x x x x x x x x x x x x x x
Number of tones       x x                    
Number of channels                 x     x      

Classified Protocols

HF/VUHF PMR-Option MIL-Option
ACARS-VHF APCO 25 Phase 2 Downlink ALE-3G
CODAN 3012 16 Channel PSK APCO-25 CHN 4+4
CODAN 3212 16 Channel PSK DMR CHN hybrid
HFDL DMR Continuous CIS-112
PACTOR (I, II, II FEC, III, 4) dPMR CIS-128
VDL2 D-STAR CIS-45 (33 / 45 Bd)
  GSM (<3G), UMTS, LTE CIS-60
  Inmarsat Satphone Uplink CIS-93
  Iridium Satphone Uplink LINK11 (CLEW)
  MPT1327 1200Bd LINK11 (SLEW)
  NXDN 2400 Bd MIL-STD-188-110A Serial (STANAG 4539 )
  NXDN 4800 Bd MIL-STD-188-110B/C App. C (STANAG 4539 HDR )
  TETRA Downlink MIL-STD-188-110C App. D
  TETRA Uplink STANAG 4285/4481 (PSK)
  TETRAPOL STANAG 4529
  Thuraya SAT Phone Uplink STANAG 4539
  Yaesu System Fusion  

Demodulators

  • Automatic frequency, amplitude and symbol rate control
  • Primary demodulation USB/LSB/AM/FM
  • Automatic burst synchronization
Demodulator Name Remarks
A3E /AM  
Analogue Selcall  
ASK 2 (OOK)  
ASK 2/4  
ASK2PSK2 (ASK4)  
ASK2PSK8  
ASK4PSK8  
Chirp  
CLOVER 2000  
CLOVER 2500  
CLOVER II  
Coquelet  
DPSK 16 A/B  
DPSK 2 A/B  
DPSK 4 A/B  
DPSK 8 A/B  
F1A  
F3E / FM  
F6/F7B  
FSK 2 matched filter  
FSK 2, 3 autoshift  
FSK 2, 3, 4 discr.  
GMSK  
J3E (USB, LSB)  
LINK-11  
MDPSK 2, 4, 8, 16 A/B  
MFSK2  
Morse, CW  
MPSK 2, 4, 8, 16 A/B  
MSK  
MT63  
MultiModem  
Multitone (FSKn)  
OFDM  
OQPSK  
PACTOR II, III, 4  
PSK 16 A/B Absolute
PSK 2 A/B Absolute
PSK 4 A/B Absolute
PSK 8 A/B Absolute
PSK data aided Fast adaptive equalizer, soft decision
QAM 16, 32, 36, 64, 128, 144, 256 V.17, V.22, V.32
Robust Packet  
TFM3  
THROB/THROBX  
Voice A3E/J3E, J3E, J3E USB, J3E LSB , A3E, F3E

Decoders

  • You can add new decoders or modify existing source code (SRC).
  • MIL decoders require an end user certificate for delivery outside Germany
  • PMR decoders require an end user certificate for delivery outside EU
  • SAT decoders are included in the PMR package and require an end user certificate for delivery outside EU

Soure Codes (SRC)

  • Source Code provided.
    go2DECODE is required to modify the protocol or to add additional output to the decoder (new alphabets, new META data handling etc.)

Decoder Package (PKG)

  • STD, included in basic products
  • MIL, requires EUC outside Germany
  • PMR, requires EUC outside EU
  • SAT, part of PMR Package

Legacy Decoders

  • Old, obsolete or outdated decoders are also included, as it cannot be guaranteed that such signals will not be reactivated. The information can only be given with great uncertainty.
  • November 2109 we again found signals marked before as legacy... sorry. But that's why we're also doing the monitoring to check the situation

HF Decoders (Protocols)

No Decoder, Release 21.1 Alias, Remarks Src Type Legacy
1 Alcatel 801H COQUELET-100, detection only, X HF X
2 ALE 2G MIL-188-141A, MIL-188-141B, ALE-400 X HF  
3 ALE 3G MIL-188-141B App. C, STANAG 4538 - MIL  
4 ALIS MERLIN, RS-ARQ, GM856C1, ALIS Slow X HF  
5 ALIS 2   X HF  
6 ARQ6-90 CCIR 518 Variant X HF X
7 ARQ6-98 CCIR 518 Variant X HF X
8 ARQ-E 4/8 cycle ARQ-1000 duplex X HF  
9 ARQ-E3 CCIR 519 Variant, TDM 342 1 Channel X HF  
10 ARQ-M2-242 ARQ-28, CCIR 242, CCIR 342, TDM 242 X HF X
11 ARQ-M2-342 ARQ-58, TDM 342 X HF X
12 ARQ-M4-242 ARQ-28, CCIR 242, CCIR 342-2, TDM 242 X HF X
13 ARQ-M4-342 ARQ-58, TDM 342 X HF X
14 ARQ-N ARQ-1000 duplex X HF X
15 ASCII 7Bit ITA5, RTTY7 X HF  
16 ASCII 8Bit   X HF  
17 AUTOSPEC SPREAD 11, SPREAD 21 X HF X
18 Baudot async 1.5 stop bit   X HF  
19 Baudot sync   X HF  
20 Baudot sync 2 stop bit   X HF  
21 Baudot universal Arabic, Cyrillic, Hebrew Alphabets X HF  
22 BULG-ASCII IRA-ARQ X HF X
23 CHN 4+4   - MIL  
24 CHN MIL 4FSK 400Hz /500 K detection only - HF  
25 CHN MIL Hybrid 8FSK-PSK no automatic recognition - HF  
26 CHU   X HF  
27 CIS 405 3915 CIS 40.5, FROST1 X HF  
28 CIS Akula 500Bd/1000Hz   X HF  
29 CIS FSK 200/1000   X HF  
30 CIS FSK 200/500   X HF  
31 CIS Hybrid MFSK-68 PSK-9000 no automatic recognition - HF  
32 CIS Hybrid MFSK-80 PSK-250 no automatic recognition - HF  
33 CIS-11 TORG 10/11 X HF  
34 CIS-112 OFDM Burst detection only X HF  
35 CIS-112 OFDM Stream detection only X HF  
36 CIS-12 PSK2, PSK4 CIS AT3104, CIS-20, FIRE, MS5 X HF  
37 CIS-128 OFDM 3 kHz detection only X HF  
38 CIS-128 OFDM 6 kHz detection only X HF  
39 CIS-14 AMOR, AMO 96, TORG 14 X HF  
40 CIS-36 CIS 10 11 11, CROWD-36 X HF X
41 CIS-36-50 BEE, T-600 X HF  
42 CIS-45 OFDM 33.3 Bd detection only X HF  
43 CIS-45 OFDM 33.3 Bd detection only X HF  
44 CIS-45 OFDM 40 Bd detection only X HF  
45 CIS-45 OFDM 40 Bd detection only X HF  
46 CIS-50-50   X HF  
47 CIS-81-81 CIS 81, CIS 81-29, Frost X HF  
48 Clansman FSK300   X HF  
49 Clover 2000   - HF  
50 Clover 2000 Broadcast   - HF  
51 Clover 2500   - HF  
52 Clover 2500 Broadcast   - HF  
53 Clover II   - HF  
54 CODAN 3012 16 Channel PSK CODAN 9001 additional raw hex output, descrambled - HF  
55 CODAN 3012 Chirp CODAN 9001 Chirp - HF  
56 CODAN 3212 1 Channel PSK 600 and 1200 bps - HF  
57 CODAN 3212 1 Channel PSK 75 bps 75 bps - HF  
58 CODAN 3212 1 Channel PSK HDR 2400 and 3600 bps - HF  
59 CODAN 3212 16 Channel PSK Includes CODAN 3012 - HF  
60 CODAN Selcal CODAN 8580, CCIR 493-4 - HF  
61 Contestia 8/16/32   X HF  
62 Coquelet-13 Coquelet-Mk1 X HF X
63 Coquelet-8 Coquelet-Mk2 X HF X
64 Coquelet-80 Coquelet-8 FEC X HF X
65 CV-786   - MIL  
66 DGPS M823 X HF  
67 DPRK PSK 150/300/600/1200 Bd detection only X HF  
68 DSC-HF GMDSS X HF  
69 DUP-ARQ ARTRAC X HF  
70 F7B Morse   X HF  
71 F7B Morse/Baudot 2 channel ITA-2 RTTY, Baudot F7B, BF6 Baudot, ITA-2 Twin X HF  
72 FEC-A FEC 100, FEC 101 X HF X
73 FSK 400/500 detection only X HF  
74 FT4   X HF  
75 FT-8   X HF  
76 Globe Wireless FSK Globe Wireless Pactor, GW DATAPLEX X HF X
77 Globe Wireless OFDM detection only - HF X
78 Globe Wireless PSK GW DATAPLEX X HF X
79 G-TOR Golay X HF  
80 HC-ARQ Haegelin-Cryptos X MIL X
81 HFDL ACARS HF, ARINC 635-2 HF Datalink, ARINC 753 X HF  
82 HNG-FEC   X HF X
83 Japanes Slot Machine XSL, detction only - HF  
84 LINK 11 CLEW STANAG 5511, TADIL A, TADIL B X MIL  
85 LINK 11 SLEW STANAG 5511 SLEW - MIL  
86 LINK 22 only STANAG 4539 Appendix D      
87 MEROD 150/267 Bd RACAL-ARQ, RAC-ARQ X HF  
88 MFSK-16   X HF  
89 MFSK-32   X HF  
90 MFSK-8   X HF  
91 MIL-188-110 16 Tone only raw output - MIL  
92 MIL-188-110 39 Tone   - MIL  
93 MIL-188-110C App D, 3/6/9/12/15/18/21/24 kHz WB-HF, detection only - MIL  
94 MIL-M-55529A MD-522, MD-674 - MIL  
95 Morse CW-Morse X HF  
96 MT63-500/1000/2000   x HF  
97 Olivia 8-16-32 X HF  
98 Packet AX.25 X HF  
99 PACTOR I incl. decoding of Robust Connect bursts X HF  
100 PACTOR I FEC   X HF  
101 PACTOR I/II/III Includes all PACTOR modes I/II/III - HF  
102 PACTOR II   - HF  
103 PACTOR II FEC   - HF  
104 PACTOR III   - HF  
105 PACTOR-4 post-processing (decompression) of airmail/sailmail emissions, if possible - HF  
106 Panther-H Sync detection synchronisation bursts only   MIL  
107 Piccolo MK12 Piccolo 12 X HF X
108 Piccolo MK6 Piccolo 6 X HF X
109 POL-ARQ CCIR 518 Variant X HF X
110 PSK10 BPSK-10 X HF  
111 PSK125/250 BPSK125/250 variant of PSK31 with higher baud rate X HF  
112 PSK31 BPSK31 X HF  
113 PSK31-FEC PSK31F X HF  
114 PSK63 BPSK63, variant of PSK31 with higher baud rate X HF  
115 PSK63/125/220-FEC variant of PSK31 with FEC X HF  
116 PSK-AM 10/31/50   X HF  
117 QPSK31/63/125/250/500   X HF  
118 Robust Packet Radio detection only X HF  
119 RUM-FEC ROU-FEC, Saud-FEC X HF X
120 SI-ARQ ARQ-S X HF X
121 SI-FEC FEC-S X HF X
122 SITOR-A SITOR-ARQ, AMTOR, CCIR 476 A X HF  
123 SITOR-B SITOR FEC, CCIR 476 B, TOR dirty X HF  
124 SP14 NUM13 X HF X
125 SPREAD 51   X HF X
126 STANAG 4197 audio codec not part of installation - MIL  
127 STANAG 4285 Terminal Mode: ASCII8, Baudot, STANAG 5066, HEX - MIL  
128 STANAG 4415 MIL-188-110A/B ser. (partly), 75bps - MIL  
129 STANAG 4481 (FSK) with detection of KG-84 encryption - MIL  
130 STANAG 4481 (PSK) contained in STANAG 4285 - MIL  
131 STANAG 4529 Terminal Mode: ASCII8 & Baudot, HEX - MIL  
132 STANAG 4539 MIL-188-110A/B ser. (partly), 150-4800 Bit/s - MIL  
133 STANAG 4539 HDR MIL-188-110B App.C (partly), 3200 - 4800 Bit/s - MIL  
134 STANAG 5065 (also Part of MIL188-110A/B) - MIL  
135 STANAG 5066 included in various decoders - MIL  
136 SWED-ARQ ARQ-SWE, CCIR 518 Variant X HF X
137 Thales System 3000 Skymaster selcal detection only - MIL  
138 THROB1/2/4   X HF  
139 THROBX1/2/4   X HF  
140 Turkish Navy FSK   X MIL  
141 Twinplex   X HF X
142 Visel FEC12, YUG-MIL X HF x
143 Voice A3E/J3E   X HF  
144 Voice J3E - USB - SELCAL ICAO Annex-10 X HF  
145 Voice J3E-LSB   X HF  
146 X06-Mazielka   X HF  
147 XPA MFSK-20 X HF  
148 XPA2   X HF  
149 FAX FM (planned for 22.2) HF-FAX, WEATHER-FAX, PRESS-FAX, WEFAX - HF  
150 HELL (planned for 22.2) HELLSCHREIBER - HF  

VHF, UHF SHF Decoders (Protocols)

No Decoder, Release 21.1 Alias, Remarks Src Type Leg
1 ACARS VHF SITA, ARINC 597 X VUHF  
2 AIS   X VUHF  
3 APCO-25 P25 - PMR  
4 APCO-25 Phase2 Downlink detection only - PMR  
5 ATIS   X VUHF  
6 Autocab   X VUHF  
7 BIIS   X VUHF  
8 DECT   - PMR  
9 Distress Radiobeacons ELT, EPIRB, COSPAS-SARSAT, PLB X VUHF  
10 DMR MotoTRBO, for burst emissions - PMR  
11 DMR Continuous MotoTRBO, for continuous emissions - PMR  
12 dPMR   - PMR  
13 DSC-VHF GMDSS-VHF X VUHF  
14 D-STAR   - PMR  
15 ERMES   X VUHF X
16 Flex   X VUHF  
17 Flex 1600Bd PSK2 for baseband demodulation X VUHF  
18 FMS-BOS   X VUHF  
19 Golay Pager Golay/GSC X VUHF  
20 GSM Control Channel C0   PMR  
21 INMARSAT AERO-C 8.4 / 10.5 / 21.0 kbs, no audio output - SHF  
22 INMARSAT AERO-P 0.6 / 1.2 / 2.4 / 4.8 / 10.5 kbs - SHF  
23 INMARSAT AERO-R 0.6 / 1.2 / 2.4 / 10.5 kbs - SHF  
24 INMARSAT AERO-T 0.6 / 1.2 / 2.4 / 10.5 kbs - SHF  
25 INMARSAT-C TDM   - SHF  
26 INMARSAT-C TDMA   - SHF  
27 IRIDIUM UPLINK detection only - SAT  
28 ISATPHONE UPLINK detection only - SAT  
29 LINK 11 CLEW UHF UHF version with FM primary modulation - MIL  
30 Mobitex 1200 Mobitex 80 X VUHF  
31 Mobitex 8000 Mobitex 400 X VUHF  
32 MOTOROLA SMARTNET 4 kHz APCO-16, MTR-EDACS (Channeld decoding) - PMR  
33 MOTOROLA SMARTNET 6 kHz APCO-16, MTR-EDACS (Channeld decoding) - PMR  
34 MPT1327 1200Bd MSK   X PMR  
35 NMT450   X VUHF  
36 NXDN 2400/4800Bd IDAS, NEXEDGE - PMR  
37 Packet 1200/2400/4800/9600   X VUHF  
38 POCSAG 512/1200/2400 CityRuf X VUHF  
39 SELCAL CCIR-1 SELCAL PCCIR, only for nominal frequency mode X VUHF  
40 SELCAL CCIR-2 SELCAL CCIR-7, only for nominal frequency mode X VUHF  
41 SELCAL CCITT only for nominal frequency mode X VUHF  
42 SELCAL DTMF sub for baseband demodulation X VUHF  
43 SELCAL EEA MPT1316, only for nominal frequency mode X VUHF  
44 SELCAL EIA only for nominal frequency mode X VUHF  
45 SELCAL EURO only for nominal frequency mode X VUHF  
46 SELCAL MODAT only for nominal frequency mode X VUHF  
47 SELCAL NATEL only for nominal frequency mode X VUHF  
48 SELCAL VDEW only for nominal frequency mode X VUHF  
49 SELCAL ZVEI SELCAL DZVEI, PDZVEI, PZVEI,ZVEI-1, ZVEI-2, ZVEI-3 X VUHF  
50 Tetra   - PMR  
51 Tetra DMO   - PMR  
52 Tetra Uplink   - PMR  
53 Tetrapol Up/downlink, voice codec not included - VUHF  
54 Thuraya Uplink detection only, RACH bursts are decoded -    
55 VDL 2   X VUHF  
56 VDL 3   X VUHF  
57 Voice A3E (AM) Air Traffic AM X VUHF  
58 Voice F3E - SELCALS CTCSS, DTMF, ZVEI, DCS X VUHF  
59 VOICE INVERSION FM-LSB SCRAMBLED ANALOG VOICE X VUHF  
60 Yaesu System Fusion 12.5 kHZ bandwidth - PMR  
61 Yaesu System Fusion NB 6.25 kHz bandwidth - PMR  

Hopper Detection

Parameter Description
Search bandwidth MF/HF: 2.4 MHz (no scan)
VHF/UHF: 20 MHz (no scan)
Minimum signal duration ≥ 1100 ms duration for frequency hopper; min. 100 hops
Hop rate 5 to 50 hops/s for MF/HF or 100 to 1000 hops/s for V/UHF
Min bandwidth 250 kHz
Hop properties Hops belonging to one FHSS emission are expected to be similar in spectral shape.
This applies for most digital - e.g. PSK based - modulations.
Individual hops should contain several symbols.
Signal Input Signal input from PLATH SIR 5110 (using IP UDP Protocol)
Signal input from PLATH SIR 2115 (using IP UDP Protocol)
Signal input from IZT R3xxx
Other receivers on request
Recommended hardware Standard HP DL360/380 Gen10 Server (alternatively Blade) with 2 x Intel Xeon-Gold (6152)
128GB DDR4-2666 RAM
2 x 300GB SAS 12G 15K
1 or 10 GbE LAN
Operating System Windows Server 2016/2019, 64 bit;
CentOS 7.x (7.5 or higher; 7.5 is recommended) 64 bit Linux. English or German.
Parameters for each detected Frequency Hopper (FH): Description
Hopper ID Unique identifier of the hopper
Frequency From Lower frequency limit of the FH
Frequency To Upper frequency limit of the FH
Start time Start time of the FH (first time of detection by the HOPD)
End time End time of the FH (last time of detection by the HOPD)
Hop Rate Estimated hop rate in hops/second
Mean dwell time Mean value of measured hop dwell times
Standard deviation dwell time Standard deviation of measured hop dwell time
Mean inter-hop pause time Mean value of measured inter-hop pause time
Standard deviation inter-hop pause time Standard deviation of measured inter-hop pause time
Mean hop bandwidth Mean value bandwidth of all hops assigned to this hopper
Number of channels The number of frequency channels used by the hopper
SNR SNR estimation based on all hops seen for this FH emission
Parameters for each Frequency Hop: Description
Hopper ID Unique identifier of the hopper
Frequency From Lower frequency limit of the hop
Frequency To Upper frequency limit of the hop
Start time Start time of the hop
End time End time of the hop
SNR SNR estimation
FHSS ID ID of FH this hop belongs to (if any)

Supported Receivers

Brand Receiver WINDOWS LINUX Max. BW, Comments
Airspy Airspy HF+ Discovery x   768 kHz, ExtIO, 768 kHz
Airspy Airspy R2 x   8 MHz, ExtIO
CommsAudit CA7851 x x 5 MHz, VITA 49, Panorama, Scan
CommsAudit CA7852 x x 40 MHz, VITA 49
ExtIO   x   Max. receiver bandwidth
GEW gRX-LAN x   1 MHz, ExtIO
IZT 3XXX x x 20 MHz, Up to 3 channels, Panorama, Scan
IZT 40XX x x 1 MHz, SignalSuite, 1 channel only
Microtelecom PERSEUS x x 1.6 MHz, limited USB3 compatiblity
NARDA IDA2 x x 320 kHz
NARDA NRA-3000 x x 320 kHz
NARDA NRA-6000 x x 320 kHz
NARDA SignalShark 3310 x x 20 MHz, VITA 49
NI USRP X310 x x 20 MHz
NOXON RTL2832U, RTLSDR x   3.2 MHz, ExtIO
PLATH SIR2110 x x 20 MHz, LINUX recommended, external receiver control only
PLATH SIR2115 x x 4 x 20 MHz, External receiver control only
PLATH SIR5110 x x 16x768 kHz subbands, External receiver control only
PLATH SIR5115 x x 40x768 kHz subbands, External receiver control only
RFSPACE NetSDR x x 2 MHz
RFSPACE SDR14 x   190 kHz
Rohde & Schwarz EB500 x x 2 MHz. Panorama
Rohde & Schwarz EB510 x x 5 MHz
Rohde & Schwarz EM100 x x 500 kHz, Panorama, Scan
Rohde & Schwarz ESMD x x 15 MHz, External receiver control only
Rohde & Schwarz PR100 x x 500 kHz, Panorama, Scan
SDRplay RSP1 x   6 MHz, ExtIO
SDRplay RSP1a x   6 MHz, ExtIO
SDRplay RSP2 x   6 MHz, ExtIO
SDRplay RSPdx x   6 MHz, ExtIO
SignalHound BB60C x x 27 MHz, Scan
SignalHound SM200 A/B x x 20 MHz
thinkRF R5500-408 x x 6.25 MHz, VITA-49
thinkRF R5500-427 x x 6.25 MHz, VITA-49
thinkRF WSA5000-408 x x 780 kHz, VITA-49
thinkRF WSA5000-427 x x 780 kHz, VITA-49
VITA 49, Generic       Can be configured for different receiver types
WiNRADiO WR-G31DDC x   800 kHz, ExtIO
WiNRADiO WR-G33DDC x x 4 MHz, Panorama
WiNRADiO WR-G35DDC x x 4 MHz, Panorama
WiNRADiO WR-G39DDC x x 4 +2 MHz, Panorama
x Others       on request

go2MONITOR Computer Recommendations

Setup Computer
non-binding recommendation		 Remarks
go2M-4 + WMPC16 + AMT 2 x Intel Xeon with 8 Cores, 2,4 GHz
32 GB RAM		 e.g HP DL360 Gen10
go2M-8 3 x WMPC32 + AMT 2 x Intel® Xeon® 6252 with 24 Cores
128 GB R		 e.g. HP DL360 Gen10
narrowband processing only
go2M-4 + WMPC32 + AMT 20 MHz Dual XEON 6242
96 GB RAM		 e.g. HP Workstation Z8 G4 WKS
go2M-4 + AMT Intel I7 8 Cores
8 GB RAM		  
go2M-8 + AMT 5 MHz i7-8700 6 cores
16 GB RAM
1 TB SSD		 e.g. HP Z2 Mini G4 Workstation
  Laptops Recommended:
- TDP: 45 W
- 6-8 cores
- min 2.4 GHz
- good cooling (otherwise speed will be throttled after a short time )
go2M-4 + AMT 2 MHz i7 8550U
16 GB RAM
512 GB SSD		 e.g. LENOVO ThinkPad T480
go2M-4 + AMT 20 MHz Xeon E-2186M
32 GB
1TB SSD		 e.g. LENOVO ThinkPad P72
in a dense signal scenario maybe not all signals get classified
go2M-8 + AMT 5 MHz i9-9980K 8 cores
32 GB RAM
2 TB SSD		 e.g. DELL XPS 15 7590