Connect and select
Connect the key with power off, then select CW. Use KEY TYPE to match a straight key, an external keyer or your paddle orientation.
Radio guides / Xiegu / X6100
CW599 ORIGINAL OPERATING WORKFLOW
X6100CW Operating Guide
The X6100 can receive and display Morse through its built-in MODEM without a computer. Set up the keyer separately, then use the decoder as a second opinion while listening. Portable operation is easier when your key, filter and stored call have already been checked at home.
X6100CW operating workflow
Checked 2026-09-09: original English X6100 manual hosted by Xiegu.eu (34 PDF pages; revision unspecified in this copy), Radioddity Extended v1.1.8 (September 2024, 143 PDF pages), and APP 1.2.0 release notes dated 2025-12-13. References use printed pages. Numerical defaults are explicitly attributed to the extended manual, not guaranteed for every firmware or region. Guide v1.0; no hardware test or third-party-firmware verification.
START HERE
A five-step CW setup routine
Use this order as an operating checklist, not as a replacement for the radio manual. Controls and available options can vary by firmware and region.
Check practice settings
Use KEY page 2 > CW TRAINER for sidetone practice. Confirm there is no RF, then adjust KEY SPEED, TONE and TONE LEVEL.
Tune for listening
Find the target by ear before narrowing DFL. Begin with noise processing off so you can hear what each later change does.
Open the receive modem
Select APP > MODEM and set its MODE to CW. Check FC/TONE and SQL while comparing decoded text to the received note.
Prepare one short call
Review a text memory containing your own callsign. Confirm the selected mode, power and trainer state before an intended transmission; listen for replies between calls.
RECEIVE ASSISTANCE
CW decoding: enable, tune and recover
Yes: the built-in MODEM includes CW receive decoding. It displays a tentative transcription; KEY configures your sending hardware, while MSG stores outgoing text. None of these functions guarantees that a received callsign is correct.
Tune the receiver
Select CW and find a steady, isolated signal. Keep the wanted note inside the DFL passband.
Select the modem mode
Open APP > MODEM > MODE and select CW explicitly. A CW receiver setting alone does not confirm the MODEM selection.
Match the tone
Check FC/TONE while listening and compare repeated text after small tuning adjustments. Avoid changing pitch, bandwidth and squelch together.
Clean up the display
Use modest SQL only after tuning. CLEAR removes old text so a fresh line shows whether the change helped; return to listening if characters remain unstable.
When decoding needs help
CW is audible but the text is wrong
Check MODEM > MODE=CW, then FC/TONE and receive tuning. Widen DFL if the wanted note has fallen outside the passband.
Weak characters vanish
Reduce modem SQL and compare with a wider filter. A clean, empty display is not proof that there is no station.
Changing KEY SPEED does not solve decoding
KEY SPEED controls paddle sending. Check the modem's settings and incoming signal separately; ask for a repeat when the received timing or signal is unclear.
Source reference: X6100 Original pp. 21–22, 25; Extended pp. 62–65
MODEL SETTINGS INDEX
CW settings, paths, and starting points
Search by control or menu path. References distinguish manufacturer manuals, distributor editions and firmware notes; documented defaults, source recommendations and CW599 advice are labeled separately.
Keyer
Key type and orientation
- Access path
KEY page 1 > KEY TYPE- Options or range
- MANUAL / AUTO-LEFT / AUTO-RIGHT
- Factory value / operating start
- Extended-manual default: MANUAL
CW599 note: Match the source of the timing: a straight key or external keyer uses manual operation, while a paddle uses the internal keyer. In trainer mode, check each side independently before trying an iambic squeeze.
Manual reference: X6100 Original pp. 8, 25; Extended pp. 66–67
Keyer
Keyer speed
- Access path
KEY page 1 > KEY SPEED- Options or range
- 5–50 WPM
- Factory value / operating start
- Extended-manual default: 15 WPM; choose a comfortable speed
CW599 note: Keep the speed low enough to leave deliberate character spaces. Test a word with both dots and dashes; if it feels hurried, lower speed rather than relying on the decoder to repair your timing.
Keyer
Iambic mode
- Access path
KEY page 1 > IAMBIC- Options or range
- A / B
- Factory value / operating start
- Extended-manual default: B
CW599 note: Use the release behaviour you have learned. Practise C and R with the trainer enabled and listen for an extra or missing element when you release the squeeze.
Receive
Sidetone pitch and level
- Access path
KEY page 1 > TONE / TONE LEVEL- Options or range
- Tone 400–1200 Hz in 10 Hz steps; level 0–10
- Factory value / operating start
- Extended-manual defaults: 800 Hz; level 10
CW599 note: Choose a comfortable note first, then reduce the level for your headphones. A listed default is not a recommended listening volume. Recheck when switching from the internal speaker to headphones.
Break-in
Trainer and QSK time
- Access path
KEY page 2 > CW TRAINER / QSK TIME- Options or range
- Trainer ON/OFF; QSK time 0–1000 ms in 10 ms steps
- Factory value / operating start
- Extended-manual defaults: trainer OFF; 100 ms
CW599 note: Enable the trainer for practice and verify no transmit indication. For a real contact, disable it and choose a delay that allows comfortable receive recovery; an external amplifier may need a longer switching interval.
Manual reference: X6100 Original pp. 14, 25; Extended pp. 67–68
Keyer
Dot/dash ratio
- Access path
KEY page 2 > DI/DA RATIO- Options or range
- 2.5–4.5 in 0.1 steps
- Factory value / operating start
- Extended-manual default: 3.0
CW599 note: Leave a standard ratio while building consistent spacing. Listen to a recording before adjusting it; a longer dash cannot replace a missing gap between characters.
Receive
Receive filter
- Access path
DFL > FILTER1 / FILTER2 / FILTER3; press MFK to choose an edge- Options or range
- Adjustable filter edges; DEFAULT restores the selected filter
- Factory value / operating start
- CW599: tune first, then narrow
CW599 note: The two edges must leave the desired tone inside the passband. If the signal disappears, restore or widen this filter before changing the modem settings. Do not copy an SSB filter's numbers into a CW preset.
Receive
MODEM CW decoder
- Access path
APP > MODEM > MODE- Options or range
- CW / RTTY / BPSK modem modes
- Factory value / operating start
- CW599: explicitly select CW
CW599 note: The receiver's mode and the modem selection are separate checks. If the radio sounds like CW but the text is wrong, confirm the modem is also set to CW before retuning. This is received-text decoding, not a keying score.
Receive
Modem tone and speed
- Access path
APP > MODEM > FC/TONE / RATE/SPEED- Options or range
- CW modem speed 5–50 WPM; tone adjustable
- Factory value / operating start
- Extended-manual CW defaults: 800 Hz; 15 WPM
CW599 note: Use a steady signal and compare its note with the selected modem tone. Change one control at a time and check repeated text. The modem settings and your paddle's KEY SPEED serve different parts of the workflow.
Receive
Modem squelch and clear
- Access path
APP > MODEM > second softkey group > SQL / CLEAR- Options or range
- SQL 0–100; CLEAR removes displayed text
- Factory value / operating start
- Extended-manual SQL default: 0
CW599 note: If noise fills the text area, first tune and filter the signal, then try a little modem squelch. Excessive squelch can cut weak elements. Clear old text before checking whether the new adjustment helped.
Memory / PC
Stored CW text
- Access path
MSG > text MSG1–5; send from APP > MODEM with CW selected- Options or range
- Five text-message slots
- Factory value / operating start
- CW599: save your own short call and review it
CW599 note: Text and voice memories are different. Read the saved callsign before using a slot, check the modem mode, and establish a short, controlled transmission before relying on a stored call outdoors.
Manual reference: X6100 Original pp. 22, 26; Extended pp. 64, 68–70
Receive
AGC and firmware changes
- Access path
AGC; APP 1.2.0: GEN > RADIO SETTING1 > AGC SLOW / AGC FAST- Options or range
- APP 1.2.0 uses time constants in milliseconds
- Factory value / operating start
- CW599: start with AGC FAST and compare by ear
CW599 note: Do not transfer old AGC numbers into renamed time-constant fields. The 1.2.0 update also requires a factory reset; save your setup first and follow the download's full instructions, then recheck keying and memories.
Manual reference: X6100 Original p. 13; APP 1.2.0 release notes (2025-12-13)
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CW599 RECOMMENDATIONS
Three operating starting points
These are original operator-oriented starting points. They are not factory presets and intentionally avoid claiming model-specific default values.
First CW contact
A calm setup for learning the radio.
- Keying: Use the hardware mode that matches your key
- Break-in: Start conservatively with semi break-in
- Receive: Prioritize comfortable pitch and level
Weak signal listening
A patient workflow for signals close to noise.
- Filter: Tighten gradually, while preserving your preferred tone
- AGC / audio: Avoid changing several receive controls at once
- Tuning: Use the radio display only as an aid; copy by ear
Faster exchanges
For operators who need quicker station turnaround.
- Break-in: Only increase switching speed after a full station check
- Keyer: Confirm paddle direction and weighting before calling
- Station: Verify amplifier, relay and interface behavior first
Questions and troubleshooting
Do I need a computer for CW decoding?
No. APP > MODEM provides an internal CW receive decoder. A computer may provide other tools, but it is not required for the on-screen decoding described here.
Why does an older manual describe practice differently?
Early prose refers to disabling QSK, while the KEY table and later extended manual expose CW TRAINER. Follow the controls on your firmware, enable the trainer for practice and verify that RF transmission is inhibited.
Should I install alternative firmware for this guide?
No. This guide follows Xiegu firmware and identified manufacturer/distributor documents. Community firmware may change menus and decoder behaviour; its controls must be checked separately.
Official model resource
Check hardware, region and firmware against the manufacturer and the clearly identified distributor resources. Manual languages are stated in the links. This page provides original operating explanations and does not host or reproduce manuals.
Independent CW599 operating guide. Product names and trademarks belong to their respective owners. This page contains original workflow advice, not manufacturer instructions or an official endorsement.
Search and filters run locally in your browser and do not connect to or control the radio. Version 1.0 (2026-09-09): bilingual CW guide, decoder workflow, real product cutout and source references. Revisions are retained in site Git and deployment backups; no separate archived page is available.