CW599 ORIGINAL OPERATING WORKFLOW

KX2CW Operating Guide

KX2 puts field CW controls close at hand. Start with sidetone practice without RF, then use its tuning aid and receive decoder to support a contact you can follow by ear. Optional tuners and attached paddles depend on the ordered configuration.

MODELKX2FOCUSPortable CW, received text and message memories

English owner’s manual B2, 22 March 2023; Elecraft currently lists production MCU 3.02 / DSP 1.52. Check MENU > FW REVS on your radio. Regional band permissions and installed options remain model-specific; the photographed paddle and microphone are optional accessories. Checked 2026-09-21; original firmware; printed manual pages unless marked PDF.

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.

Connect the correct key

Check KEY1 for the external jack or KEY2 for the attached paddle.

Practice without RF

Select PTT-CW / VOX off; do not press XMIT.

Set rhythm and tone

Send a short callsign and adjust KYR-SPT/MIC, pitch and MON.

Find one clear signal

Tune with CWT/SPOT, then narrow the filter and optionally enable receive text.

Make a single controlled call

Enable VOX, check transmit frequency and power, then send once and listen.

RECEIVE ASSISTANCE

CW decoding: enable, tune and recover

Built-in received-CW decoding is separate from your transmitted text. Use it to confirm a call you can hear, not to fill in a call lost in fading.

Select receive text

Hold TEXT and choose RX THRn with OFS/B; TX ONLY will not decode another station.

Tune and filter

Enable CWT, match the note and reduce the bandwidth to 0.30 kHz or less if the signal remains readable.

Set the threshold

Adjust RX THRn until the CWT segment flashes with the received keying. Strong or fast signals may need a higher threshold.

Read and verify

Read VFO B and compare a complete callsign by ear. Use DISP if a special VFO B display is in the way.

When decoding needs help

No text

Return to the receive-decode setting above, confirm a steady audible CW signal and retune before changing more parameters. Transmit echo alone does not confirm receive decoding.

Garbled text

Listen to one complete call and compare it with the display. Fading and irregular spacing can defeat the decoder; request a repeat and copy by ear instead of completing an uncertain callsign from guesses.

Another station takes over

Center the wanted signal first, then narrow the receive filter gradually. If the wanted tone disappears, widen the filter and tune again. Stop adjusting when a clear tone and stable text agree.

Source reference: KX2 Owner’s Manual B2, pp. 18, 29

MODEL SETTINGS INDEX

CW settings, paths, and starting points

Hold MENU, select an entry with OFS/B, change its value with VFO A, and tap DISP to exit (p. 14). Search by setting or menu path. Manufacturer defaults and recommendations are labeled separately from CW599 advice; references identify the checked manual or software version.

Keyer

Select the actual key input

Access path: MENU > CW KEY1 / CW KEY2
Options or range: Normal / reverse paddle; HAND
Factory value / operating start: Manual defaults: KEY1 TIP=DOT; KEY2 LFT=DOT (p. 45).

CW599 note: Use KEY1 for the external jack and KEY2 for the attached paddle. Test separate dot and dash presses before a contact; a reversed paddle is a configuration issue, not a reason to relearn your hand movement.

Manual reference: KX2 Owner’s Manual B2, pp. 8, 21, 45

Keyer

Send at a copying speed

Access path: KYR-SPT/MIC control in CW
Options or range: Internal keyer speed
Factory value / operating start: CW599: a comfortable copying speed, not a factory preset.

CW599 note: Turn the keyer control while listening to your own rhythm. Send your callsign twice without RF; choose a speed at which character spacing remains deliberate, then listen for a caller at that speed.

Manual reference: KX2 Owner’s Manual B2, pp. 19, 21

Receive

Match pitch and monitor level

Access path: MENU > PITCH; tap AF/MON > MON
Options or range: Pitch and sidetone volume are separate
Factory value / operating start: Manual pitch default: 0.60 kHz (p. 49); CW599: adjust volume for comfortable listening.

CW599 note: Choose a comfortable note, then use MON to set its loudness. Tune the received note to the same pitch before narrowing the filter; changing volume alone does not correct an off-frequency signal.

Manual reference: KX2 Owner’s Manual B2, pp. 17, 21, 49

Break-in

Practice first, then enable keying

Access path: MENU > VOX MD; MENU > VOX DLY
Options or range: VOX MD OFF / ON; VOX DLY 0.00 for full QSK
Factory value / operating start: CW manual defaults: VOX MD ON and VOX DLY 0.00 s (p. 53). CW599: turn VOX off before practice.

CW599 note: Select PTT-CW (KX2: VOX MD OFF) and leave XMIT untouched to hear sidetone without RF. Enable VOX only after this check. Increase recovery delay if listening between elements is tiring.

Manual reference: KX2 Owner’s Manual B2, pp. 21, 53

Receive

Center the signal before tightening the filter

Access path: FIL > AF/MON width; hold APF-AN; MENU > CWT
Options or range: Receiver passband; audio peaking; tuning aid
Factory value / operating start: CW599: change only after the listening or keying check below.

CW599 note: Tap FIL, turn AF/MON for width and KYR-SPT/MIC for shift; tap KYR-SPT/MIC to center the passband. Exit FIL ADJ before tapping KYR-SPT/MIC for spot (CWT off) or auto-spot (CWT on). Narrow in small steps and compare APF on/off at the same listening level. Keep the version that preserves complete dots and dashes.

Manual reference: KX2 Owner’s Manual B2, pp. 17–18, 21

Receive

Receive decoding is RX THRn

Access path: Hold TEXT > OFS/B > RX THRn
Options or range: TX ONLY / RX THRn; manual describes roughly 8–70 WPM receive decoding
Factory value / operating start: Manufacturer advice: receive bandwidth 0.30 kHz or less for decoding.

CW599 note: TX ONLY shows your internal-keyer output. Select an RX threshold for incoming text on VFO B; adjust it until the CWT segment follows the incoming keying. DISP restores VFO B if another special display hides the text.

Manual reference: KX2 Owner’s Manual B2, p. 29

Memory / PC

Record a short memory and prove the stop action

Access path: Hold REC > 1–3; MSG to finish; MSG > 1–3 to play
Options or range: 3 buffers, 250 characters each
Factory value / operating start: CW599: change only after the listening or keying check below.

CW599 note: Record with the internal keyer paddle; an external keyer cannot record these text buffers. Play once with RF disabled and cancel with XMIT or the key. Replace example callsigns before transmitting.

Manual reference: KX2 Owner’s Manual B2, p. 22

Memory / PC

Leave room for a reply

Access path: MENU > MSG RPT; MSG then hold a message key
Options or range: p. 22: 1–255 s; menu table p. 48: 0–255 s
Factory value / operating start: Manual default: 6 s (p. 48). CW599: start at 6 s and leave room for an answer; verify the lower bound on your firmware.

CW599 note: Holding the message key starts repeating playback. Use a single playback until its content and stop action are familiar; when repeating CQ, keep an audible receive gap long enough to notice an answer.

Manual reference: KX2 Owner’s Manual B2, pp. 22, 48

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 contact

Check one change at a time.

Keying: Match the actual key and verify clean spacing
Transmit: Check the documented RF-off or dummy-load setup first
Receive: Use a comfortable tone and moderate volume

Difficult reception

Keep the wanted signal audible.

Tuning: Center the wanted note before narrowing
Filter: Compare changes at a similar audio level
Copying: Ask for a repeat when a callsign remains uncertain

Repeated calls

Leave a clear path back to receiving.

Sending: Verify any supported message and its stop action
Listening: Leave time for an answer
Station: Confirm frequency, power and transmit recovery

Questions and troubleshooting

Why does TEXT only show my own sending?

TX ONLY is selected. Choose RX THRn and tune a received CW signal.

Why is there sidetone but no RF?

PTT-CW / VOX off is the intentional practice state. Confirm the antenna and transmit frequency before enabling VOX.

Can KX2 and KX3 memory counts be interchanged?

No. This guide uses 3 text buffers for KX2. Attached paddles and optional modules also differ between models.

Official model resource

Use the manufacturer-controlled product and support pages to verify your region, firmware, menus, connector wiring, operating limits, and safety information. CW599 does not host, mirror, or reproduce the manual.

Elecraft product and ordering information Elecraft manuals and errata (English)KX2 owner manual B2 (English PDF)Elecraft firmware and release notes (English)Product photograph: Elecraft

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 a radio. Version 1.0 (2026-09-21): bilingual guide and sourced product photo. Revisions are retained in site Git and release backups; no separate archived page.