Tools concerning Amateur and Amateur Satellite Service.
If you have any suggestions for tools that should be listed here, drop me a message.
Time
Clock UTC (PTB - Physikalisch-Technische Bundesanstalt)
Propagation Prediction and Space Weather
VOACAP - online HF path calculation (HowTo)
radiofresnel - online 3D Fresnel Zone calculation (HowTo)
Geomagnetic Kₚ Index (GFZ Helmholtz Zentrum, Potsdam)
Bars: last 24 h and 4 d | Archive || Bartels Music Diagram: last 4 m | Archive
Near Real-Time Maps and Data about Ionosphere Conditions (Web Tool)
NCDXF/IARU HF Beacon Project live schedule
RBN - Reverse Beacon Network
WSPR Map - Weak Signal Propagation Reporter
Antenna Simulation (NEC - Numerical Electromagnetics Code)
4NEC2 - free NEC2 implementation
EZNEC - free NEC2 implementation (no further development)
NEC5 licence - most advanced NEC enginge
WattWächter - BNetzA tool calculating electromagnetic fields (german, BEMFV)
Frequency Allocation
Frequenzplan (BNetzA - Bundesnetzagentur - Germany)
ITU: Radio Services and Their Needs
(aus: ITU Handbook: The Ionopshere and its effects on Radiowace Propagation, 6.7, Table 6.5, p. 78)
| Fixed Service | Mobile Service | Broadcasting Service | |
| Communication Type | Point-to-Point | Point-to-Point and/or Point-to-Area |
Point-to-Area |
| Information Flow | One- or Two-way | Two-way | One-way |
| Frequency Agility | Frequencies can be changed whenever required | Frequencies can be changed whenever required | Frequency Continuity desirable |
| Reliability considered | Reception Reliability | Communications or Service Reliability |
Service Reliability |
| Transmitter Power | Medium | Medium or Low | High |
| Receiver Sensitivity / Antenna Gain |
High | High Sensitivity / Antenna Limitations |
Low |
| User | Technical | Technical | Non-Technical |
| Minimium required Audio Quality | Intelligable | Intelligable | Good |