Changelog

Elecraft firmware changelog

306 releases tracked, newest first.

  1. KX3 v1.57 v1.61 Fixed power rollback issues, improved AM and SSB transmission, and completed ESSB mode.

  2. KX3 v1.54 v1.57 Eliminates 12-kHz spur; improves ATU and Weaver mode reception

  3. KPA500 v1.32 v1.33 Fixed power-on communication issue when K3 radio was on a different band.

  4. KX3 v1.50 v1.54 Add CW transmission in SSB mode; preserve 1-Hz tuning after APF off

  5. KPA500 v1.29 v1.32 Fixed standby transitions with transmitters that don't output BAND control signals.

  6. KAT500 v1.32 v1.41 Oscillator can turn off when idle to eliminate unwanted signal; adds Auto Fine Tune and startup power control.

  7. KX3 v1.48 v1.50 New speech compression algorithm improves SSB talk power with clean transmission.

  8. KX3 v1.47 v1.48 Noise blanking level now adjustable using knob with 15 settings per band.

  9. KX3 v1.41 v1.47 Noise reduction now easily adjustable via knob; fixed audio loss, S-meter pinging, and DSP issues.

  10. K3S v4.66 v4.67 Corrected LCD icons for notch, manual notch, and norm wings on DSP graphic (version B hardware only).

  11. KX3 v1.38 v1.41 Speaker mute bug fixed, audio improved, AF gain refined, and LED brightness control added.

  12. K3S v4.62 v4.66 FSK-D keying bandwidth greatly reduced for cleaner signals; K3/0 remote-rig fixes.

  13. KX3 v1.36 v1.38 Added programmable switch macros and fixed SSB receive attenuation at narrow bandwidths

  14. KAT500 v1.18 v1.32 Memory Recall Tune auto-recalls settings when switching frequencies in same band; improved tuning.

  15. KPA500 v1.23 v1.29 Fixed Auxbus hang on shutdown and added serial command for Power On Operate

  16. KX3 v1.84 v1.87 External amplifier stays in QRO mode at lower battery voltages; TX gain display corrected.

  17. KX3 v1.34 v1.36 SSB passband tuning now supports WIDTH/SHIFT controls as alternative to LO/HI CUT

  18. KX3 v1.30 v1.34 Digital voice recorder added with two message slots and auto-repeat capability.

  19. KPA500 v1.21 v1.23

  20. KPA500 v1.20 v1.21 Fixed K3 power-on detection and AuxBus command handling when K3 powers up after KPA.

  21. KPA500 v1.18 v1.20 Fixes serial port hangs, LCD display corruption, and power-on OPER messaging

  22. KX3 v1.28 v1.30

  23. KAT500 v1.13 v1.18 Reduced minimum start tune power to 7.5 watts and accelerated coarse tuning steps.

  24. K3S v4.61 v4.62

  25. KPA500 v1.17 v1.18

  26. K3S v4.60 v4.61 RIT and XIT stay on during band changes via frequency entry or remote control.

  27. KX3 v1.27 v1.28 RIT and XIT no longer unintentionally disabled; transverter frequency entry fixed.

  28. K3S v4.58 v4.60 FM filter available for ESSB transmit; transverter frequency entry fixed.

  29. K3S v4.57 v4.58 CW decode improved with independent AGC and better space detection; keyer paddles disabled in FSK-D/PSK-D when text decode is off.

  30. KAT500 v1.10 v1.13

  31. KAT500 v1.05 v1.10 Attenuator deployment now conditional on power level and SWR recovery delay added.

  32. KX3 v1.26 v1.27

  33. KAT500 v1.04 v1.05 Added Amplifier Key Interrupt Power control and improved auto tune behavior

  34. KPA500 v1.16 v1.17

  35. K3S v4.51 v4.57 FM filter now usable for AM transmit with fixes for PSK/FSK duplication and VOX remote control termination.

  36. KX3 v1.23 v1.26 Fixes receive audio loss on band changes, dual watch signal attenuation, and enhances Morse interface.

  37. KAT500 v1.00 v1.04

  38. KX3 v1.22 v1.23 Fixed receive audio dropout on band changes and FM artifacts, increased sidetone max.

  39. KPA500 v1.11 v1.16

  40. KAT500 v1.00 first tracked

  41. KX3 v1.12 v1.22 FM adjacent-channel rejection improved with new per-band sideband nulling and VFO temperature compensation.

  42. KX3 v1.10 v1.12 Reduced minimum supply voltage to 7.5V, added VOX auto-off option at power-up, mic functions auto-disable in data modes.

  43. KX3 v1.08 v1.10 Auto-notch and noise reduction features added to improve receive performance.

  44. KX3 v1.06 v1.08 Battery voltage reading added to display rotation; charging status indicated by asterisk.

  45. KX3 v0.99 v1.06 Adds noise pulse rejection and improved CW decode with thresholds; fixes power cycling, dual watch, and RX audio loss.

  46. K3S v4.48 v4.51 AGC improvements enable higher thresholds and clearer signal reception in pile-ups and noisy conditions.

  47. KX3 v0.97 v0.99 Fixed preamp losing gain with noise blanket, prevented TX in ACC2 menu, improved wattmeter calibration.

  48. KX3 v0.92 v0.97

  49. KX3 v0.91 v0.92 Adds RX SHFT menu to reduce AM detection, extends AUTO-OFF timer to transmitter keying, and adds HI=PTT option for ACC2 remote control.

  50. KX3 v0.90 v0.91