I ordered the K40 back in March and was told a sixty day wait. Still no word on shipment of the K40 even though it has been almost 100 days since I placed the order. Any idea on when K40's will start shipping? I understand parts have been an issue for manufacturing. Looking forward to using the K40 someday!!
Jim Downer KO6MIF On Fri, Jun 19, 2026 at 9:02 AM <[email protected]> wrote: > Send Elecraft mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://mailman.qth.net/mailman/listinfo/elecraft > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Elecraft digest..." > > > Today's Topics: > > 1. New K4 & K4/0 production software releases available (with > SSNR feature, etc.) (Wayne Burdick) > 2. Elecraft 20m SSB Net Results: June 14, 2026 (Brian Maynard) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 18 Jun 2026 10:56:02 -0700 > From: Wayne Burdick <[email protected]> > To: elecraft <[email protected]> > Subject: [Elecraft] New K4 & K4/0 production software releases > available (with SSNR feature, etc.) > Message-ID: > < > cae8smruc4ynynp4m9vjwstrowsg2bzpqxwueb1du0oowgjd...@mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > After extensive testing of intermediate Field Test and Beta releases, we've > promoted the K4 and the K4/0 software to Production status. For the K4, the > latest is R38.production, and for the K4/0, R3.production. We recommend > that all K4 and K4/0 users upgrade to these releases to stay current and to > take advantage of the latest features and improvements. > > *TO INSTALL: *Use Fn -> UPDATE to bring up the update function, then use > the pulldown menu to select the latest production release. Tap "Check for > Updates" to switch to the R38 on the K4 or R3 on the K4/0. Once the new > software components are listed on the screen, tap "Install." The time > required for installation of new software can be from 1 to 10 minutes or > more, depending on when you last updated. > > *IMPORTANT: *For K4 and K4/0s to interoperate seamlessly, they must both > be updated to the latest releases. This includes any third-party K4s you > may be connecting to. Please contact the owners of such K4s to coordinate > updates. You may also need to upgrade to the latest versions of any > third-party control apps. > > *HIGHLIGHTS OF CHANGES SINCE LAST PRODUCTION RELEASE:* > > - High-performance SSNR (Spectral Subtraction Noise Reduction) > - Full support for K4/0 Remote Panel and 3rd-party control applications > - Reduced audio and T/R latency during Remote operation > - Startup macro capability for power-on customization of SPLIT, etc. > - Extended RX audio scaling menu entry (-10 to +6 dB) > - RIT/XIT offset knob speed reduced for easier tuning > - Unshift on space (UOS) for RTTY RX; reduced RTTY TX idle time > - Manual notch and NR available in all data modes > - Many new control commands for Remote and in switch macros > - K4/0 front-panel battery status indicator > > This is in addition to many bug fixes. > > For details, see the aggregate release notes for K4 R38 beta 1 through 4 > below; in general these apply to the K4/0 as well. Full release notes for > the K4 and K4/0 are available via their front-panel UPDATE function, and > should also be on the website by tomorrow. > > 73, > Wayne > N6KR > > > =============================================================== > ====================== R38 (PRODUCTION) ======================= > =============================================================== > > June 17, 2026 > > This release is functionally identical to R38.BETA4, which has been tested > and promoted to production status. See below for details. > > FSK RTTY BUG NOTE: At present, FSK RTTY transmissions from a K4/0 (or from > a K4 used as a client) will not work unless TEXT DECODE is enabled. This > will be addressed in a future release. (When operating a K4 standalone, FSK > RTTY transmit will work with or without text decode enabled.) > > > ======================================================== > ====================== R38.BETA4 ======================= > ======================================================== > > May 31, 2026 > > ------------ > NEW FEATURES > ------------ > > - RX AUDIO GAIN BOOST RANGE NOW -10 TO +6 DB: Previously, the RX Audio > Gain Boost menu entry's range was 0 to +6 dB. The range has now been > extended _downward_ (to -10 dB) for the benefit of operators with > exceptionally sensitive headphones. In addition to reducing overall gain, > this change can move the AF GAIN knob away from its minimum setting, > improving granularity. > > --------- > BUG FIXES > --------- > > - NOISE REDUCTION TYPE LAST USED IS PRESERVED BETWEEN POWER CYCLES: The > last type of NR selected, SSNR (new) vs. LMS (original) will appear on > power-up. > > - TRANSMIT MONITOR AUDIO PRESERVED IN FSKD & PSKD MODES: Previously, TX > monitor audio was lost in some cases, e.g. when using DTR for keying. > > -------------- > FOR DEVELOPERS > -------------- > > - The ME113 command (RX Audio Gain Boost) now takes negative numbers, e.g. > "ME113.-10;". ME113.+; and ME113.-; also work as expected, with range -10 > to +6. > > > ======================================================== > ====================== R38.BETA3 ======================= > ======================================================== > > May 11, 2026 > > ------------ > NEW FEATURES > ------------ > > - ADDED SPECTRAL SUBTRACTION NOISE REDUCTION (SSNR): SSNR is a major > enhancement to the K4's receivers, often suppressing background noise to > nearly inaudible levels. In addition to making reception more pleasant, > SSNR can often clarify signals near the noise floor that were highly > degraded. SSNR works in all modes but is especially effect on speech > signals. > > TO USE SSNR: Hold the NR LEVEL switch, change the algorithm from "LMS" > (least mean squares, the original NR algorithm) to "SSNR", and select a > level from 1-20. Higher level values will suppress noise to a greater > degree, at the expense of some erosion of weak signals. As with all NR > algorithms, the lowest effective value should be used. > > NOTE: In CW mode where weak or tightly packed signals are present, LMS NR > may be preferred. Also, CW copy may be better enhanced by narrowing filter > bandwidths or using APF rather than using NR. Filtering and APF can also be > combined with NR and NB for maximum benefit. > > - RIT/XIT OFFSET KNOB SPEED REDUCED: The RIT/XIT offset knob's steps per > turn rate is now set to 50 when VFO A is set for 100, and 100 if VFO A is > set for 200 or 400. This makes fine-tuning of signals easier. > > - CLIENT FREQUENCY MEMORIES: The K4/0 (and K4 when used as a remote client) > store their own set of GP and Quick memories internally. Those memories now > apply to every server K4 to which the client connects. Any changes remain > local to the client. Client activity never changes memories stored on the > server. If two clients connect concurrently to the same server, they will > each have their own set of GP and Quick memories. NOTE: When you first > install this update, your *most recent* per-Server Quick Memories will be > saved. Any memories that you save from now on will apply to ALL servers. As > a one-time side effect, GP memories may be replaced by factory defaults, > mostly blank except for 60 m presets. > > - NOW PRESERVING STATES OF SPLIT, TEST, VFO LINK, AND VFO LOCK: The new > STARTUP macro (see below) allows full customization of the K4's power-up > state, so we no longer automatically turn these settings off. > > - STARTUP MACRO: You can now automatically set up initial conditions each > time the K4 is turned on, if desired, by editing the STARTUP MACRO. Tap Fn, > then select MACROS. Scroll to STARTUP (at the top of the list). To bring up > a text keyboard, tap the empty field at the right end of this selected line > on the screen. You can bypass execution of the startup macro by holding the > REV switch during power-on. > > For example, if you want SPLIT to be turned OFF on power-up, enter the > command "ft0;" as the macro command. (A semicolon is required at the end of > each command in the list.) Another typical use of the startup macro is to > jump to a preferred frequency and/or mode. The command "fa14250;md2;" in > the STARTUP macro would set the K4 to 14.250.000, USB mode. Refer to the K4 > Programmer's Reference for full details on available control commands. > > --------- > BUG FIXES > --------- > > - ANT and RX ANT button configuration tracks server ANT CFG correctly upon > connection. Changes made to ANT CFG while connected do not modify the ANT > CFG of the Server, only the Client, and only temporarily for the duration > of the connection. (Host commands RS2, ACM and ACT may be used to change > Server ANT CFG while remote, if required.) > > - DVR message play can now be interrupted via PTT or VOX activation. RF > switching artifacts eliminated from DVR message play. > > - Eliminated ALC/CMP metering glitch at start of remote transmission. Also > eliminated false triggering of VOX. > > - TX Inhibit status on client now passed correctly. > > - RX EQ adjustments on client now adjusting server properly. > > - REV button now functions correctly when activated from a K4/0. > > - RX command now clears client streaming DVR message. > > -------------- > FOR DEVELOPERS > -------------- > > - DARS (start voice recording of speaker audio) is now allowed in the > STARTUP macro. > > - Updated RS (Remote Set) command: > > * Added '2' as a new parameter for experimental mode command tunnel. > RS2; enables a remote set command tunnel which, when enabled, > causes commands to be forwarded to the server radio. > For example, RS2;MG0;RS0; will set MIC GAIN on the server radio to 0 > without affecting the client radio. > > - Added NRS command for SSNR configuration. Associated change to NR command > (for LMS). > > - RX; command interrupts DVR messages sent to server. > > - RX; command interrupts KZ commands in progress on server. > > - TXPARAMS in status area no longer flickers between 0 and current value. > > > > ======================================================== > ====================== R38.BETA2 ======================= > ======================================================== > > Feb. 24, 2026 > > ------------ > NEW FEATURES > ------------ > > - FULL SUPPORT FOR K4/0 REMOTE CONTROL PANEL. Note: Completion of > K4-to-K4/0 support also directly benefits all third-party K4-Remote > software applications. > > - MANUAL NOTCH NOW AVAILABLE IN ALL DATA MODES. > > - NOISE REDUCTION (NR) NOW AVAILABLE IN ALL DATA MODES. > > - REMOTE TX PARAMETERS DISPLAYED AT CLIENT: TX parameters for the server K4 > are now displayed in the status area of a client K4 or K4/0. > > - LOCAL/REMOTE BUTTON ON CLIENT ALL-PARAMS DISPLAY: To access this, tap the > status area of the LCD, lower-left-hand corner. When Remote is selected, > voltage/current/temperature values shown apply to the remote server. > > --------- > BUG FIXES > --------- > > - TX METERS & BAR GRAPH: These no longer get "stuck" or flicker excessively > when using a paddle/key after XMIT/PTT asserted. > > - Resolved remaining RIT/XIT display issue with GHz frequencies. > > - Eliminated low output/high PA current drain on MARS frequencies around > 8.6 and 18.3 MHz > > - Eliminated DVR play delay when returning to RX mode. > > - MONitor level no longer defaults to 5 when the K4 makes a Remote > connection. > > - Cleaned up T/R artifacts that primarily affected CW operation during > Remote operation. > > - TX Gain Cal via TUNE defaults to OFF. > > - VFO Coarse Tuning menu entry fixed for Remote case. (Menu entry is client > only. Do not update remote unless RSET is active.) > > - Transmit condition (at server) correctly terminates on remote client > disconnect. > > - On transverter bands at GHz frequencies, RIT/XIT adjustment no longer > causes large frequency steps. > > - Remote: Default audio encode mode is now set when the last client > disconnects from the server. > > - Remote connection issues: (1) A K4 acting as a client no longer accepts > connections on port 9204 / 9205. (2) As a side effect of #1, a K4 will no > longer be able to connect to itself. (3) A K4 that has a connected client > is not allowed to connect to another K4 (i.e., the RRT command will fail > with "RRT!;"). > > -------------- > FOR DEVELOPERS > -------------- > > - DARC; command now clears AF PLAY display timestamps. DARC; forces the DAP > idle. > > - PO command AI responses being send to clients not in AI mode. > > - Added support for RROn; command. Controls remote dialog popups with globe > icon. > > - SP command sent to server updates client as well. > > - SQ+/- now working correctly. SQ- doesn't wrap. > > - EC command is forwarded to remote server. > > - MO command correctly opens menu on local client. > > - Added support for SQ-; SQ+; SQ/; commands. > > - Added support for RG/; toggle on/off. Toggles between previous nonzero > value and zero. > > - Added RG-; RG+ incr/decr commands. > > > ======================================================== > ====================== R38.BETA1 ======================= > ======================================================== > > August 7, 2025 > > ------------ > NEW FEATURES > ------------ > > - REMOTE: AUDIO STREAMING LATENCY AND T/R TIMES REDUCED. Average latency > should be lower and more stable over time. Results will still vary with > internet connection quality. > > - SPLIT MODE ALWAYS TURNED OFF AT POWER-UP. Several customers reported > inadvertently leaving SPLIT on. Turning it off on any fresh start is the > safer alternative. > > - ADDED UNSHIFT-ON-SPACE (UOS) for RTTY RX, now an industry standard. At > present UOS cannot be turned off, though we could add a menu entry for it > if required. Field-test group consensus was that it wasn't needed. (NOTE: > UOS is already being done in TX mode.) > > - SHORTENED RTTY "DIDDLES" (idle time) at the end of RTTY transmissions > terminated by an EOT ('|') character. Was ~650 ms, now ~100 ms. This is > useful for RTTY contesting. > > - Extensive updates in support of the K4/0. > > - Updated built-in operating manual to rev. D11. > > --------- > BUG FIXES > --------- > > - Remote: If you send a key or paddle then hit PTT shortly after, return to > RX mode may have been subject to an excessive delay. > > - Improved system anomaly detection/messaging, specifically for LPA and DSP > errors. > > - PSK and RTTY via keyer paddle now inserts characters into TX decode > window (like CW). > > -------------- > FOR DEVELOPERS > -------------- > > - RX; command will now terminate a KY command if sent directly after (e.g., > KY VVVV;RX;). > > - TX;DE999;RX; correctly results in a 10 second wait before going back to > RX;. The only exception is while KYW ("Wait") is active, e.g.: > TX;KYWOOO;DE999;FA;RX;TB;. In this case the RX; will be processed, and the > FA;TB; responses will be delayed by 10 seconds. > > - BR; now returns the baud rate of RS232 port. > > - MEDF (menu definitions) for IDs 107 and 109 cleaned up, removing > extraneous fields. > > - BI, MX, RO$, and RT$ info now sent in response to RDY; > > - Remote: Any SL set command now clears the streaming audio buffers, even > if the SL value isn't changed. NOTE: Normally buffer contents will > stabilize over time without any user intervention. The UI does not provide > a way to do this directly. > > - Remote: RX; command while in receive no longer clears the RX audio buffer > or causes the radio to go into TX in CW mode when not sending CW. > > - Remote: We no longer ignore client-requested command processing delays > (e.g., DEnnn;). > > > -- > Elecraft, Inc. > > > ------------------------------ > > Message: 2 > Date: Fri, 19 Jun 2026 06:24:41 -0400 > From: Brian Maynard <[email protected]> > To: [email protected] > Subject: [Elecraft] Elecraft 20m SSB Net Results: June 14, 2026 > Message-ID: > < > calrmesrson-vdwrwdwh5egpvhcwfa3wcjplsnilnkv2xy0c...@mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > Please join us every Sunday at 1800 UTC on 14.3035 MHz. All welcome! > > CI # Callsign Operator State Rig Notes > 1 N8SBE Dave MI K4D #1358 K4/0 remote; logger > 2 WB9JNZ Eric IL FTdx101d net control > 3 K6FW Frank CA K4 #1083 relay > 4 W1NGA Albert CO K4 #1473 > 5 VE1JS John NS K4D #1268 > 6 WB7S Jerry WY K3s #11545 > 7 N4NRW Roger SC K3 #1318 relay > 8 K8NU Carl MI K4D #1228 > 9 K8GGG James (no club info) > 10 KD8RV Greg MI K3 #5600 > 11 KO5V Jim NM KX2 #658 300W > 12 W7TMD Tom ID K4D #1214 > 13 NS7P Phil OR K3 #1826 > 14 WN8A Jim MI K4D #2020 > 15 WW4JF John TN K3s #11177 > 16 AE1E Ken TX KX2 #5931 > 17 W0PU Hans CO K3S #11686 > 18 W9PCS Paul WI K4D #620 > 19 K2SHN Mike AR HW-101 > > > ------------------------------ > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > http://mailman.qth.net/mailman/listinfo/elecraft > You must be a subscriber to post. > Elecraft web page: http://www.elecraft.com > > End of Elecraft Digest, Vol 266, Issue 11 > ***************************************** > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
