Radios
Tables ▾

MFJ CW Gear · Volume 3

MFJ CW Gear — Vol 3: Reference

Bench discipline, manuals, and resources for the MFJ CW instruments

3.1 Bench discipline — when to reach for which instrument

The two instruments in this volume are non-overlapping in their use cases. A short decision table:

Table 1 — The two instruments in this volume are non-overlapping in their use cases. A short decision table

Use caseInstrumentNotes
Learn Morse code from zeroMFJ-419Farnsworth method, random character or QSO mode. See §2.
Maintain CW speed proficiency at 20+ WPMMFJ-419 with USB text modePaste QST articles into a terminal; play back at the target speed.
Practice sending CW with realistic feedback (no radio in loop)MFJ-419 in Send/Analyze modeThe 419 decodes your fist and grades it.
Send real CW on the air from the X6100MFJ-422DRCA-to-3.5 mm cable into the X6100’s CW key jack. See §3.3.
Send CW from a portable HF rig (X6100 at a POTA site)MFJ-422DBattery-powered, light enough to throw in the field bag.
Routine voltage/current/resistance on the modern benchNot in scope of this volumeUse a modern handheld DMM (Fluke 87V or equivalent). Not catalogued here — this volume covers the radio-specific supporting instruments only.

The bench instruments that previously shared this volume have moved to the Test Equipment collection and are documented at test-equipment.fubsypoly.com.

3.2 Resources

Manuals (in 02-inputs/manuals/):

  • mfj-419/cwelmer_mfj419.pdf — MFJ-419 operating manual
  • mfj-422d/MFJ-422D Manual.pdf — MFJ-422D operating manual (includes character set and prosign list)

Vendor / authoritative web references:

Community + reference:

  • CWops Academy — free online CW training program at https://cwops.org/cw-academy/. Complements the MFJ-419 with structured curriculum and live-coached classes. The instructional pattern (Farnsworth, character recognition, head copy) is the same; the live coaching is the differentiator.
  • W1AW Code Practice Bulletins — the ARRL’s HF CW practice broadcasts, schedule at https://www.arrl.org/w1aw-operating-schedule. Real on-air CW from a high-power station; pair with the MFJ-419 as the off-line warmup.

Related volumes: