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Offline ToolNBEMS / Fldigi Reference
Fldigi + Flmsg (NBEMS) modes many EMA agencies expect for ICS-style forms on HF/VHF data segments — pair with ICS-213 bodies and document in PACE.
Common NBEMS modes (field reference)
Confirm your served agency's standard library before an activation. Operate within license privileges and band plans.
| Mode | Typical use | Notes |
|---|---|---|
| THOR | Robust narrow data | Common agency default — moderate baud, good on noisy HF |
| Olivia | Weak-signal forms | Multiple tone pairs — verify exact Olivia variant in agency template |
| MFSK | Structured messages | Often paired with Flmsg ICS templates |
| MT63 | Wide HF traffic | Legacy interoperability — check net instructions |
Session checklist
- Software stack: Fldigi + Flmsg (NBEMS) — load agency form library; test sound card levels before field deploy.
- Message body: Draft in ICS-213 or Winlink templates first — keep bodies short for data modes.
- Winlink vs NBEMS: Winlink is the common ham volunteer path; NBEMS matches many EMA workflows — see digital emcomm hub.
- PACE: Document mode, frequency, and software in PACE planner as Alternate or Contingency.
- Workflow: Winlink session workflow · HF traffic hub · radiogram worksheet