The Kenwood TS-590SG... a great value in a HF transceiver!  Perhaps you're thinking you might opt for a 590SG yourself.  

Incremental changes help performance and function to evolve.

■ An even higher performance receiver with superior adjacent dynamic range.
■ Advanced AGC control through digital signal processing from the IF stage.
■ Highly reliable TX outputs high-quality TX signal.
■ New morse code decoder. Scroll display on 13-segment display unit.
 Characters shown in dedicated window on ARCP-590G.
■ MULTI/CH knob (with push-switch) and RIT/XIT/CL key also configurable in
addition to existing PF A and PF B programmable functions.
■ New Split function (TS-990S-style) enabling quick configuration added in addition to existing Split setting.
■ Transceiver equalizer configurable by mode.
■ FIL A/B configurable independently with VFO A/B (convenient during Split operation).
■ Front or rear PTT selectable for Data PTT.
■ Switching from HI CUT/LO CUT to WIDTH/SHIFT possible for reception bandwidth changing in SSB mode.
■ DRV connector switchable to antenna output function(convenient when connecting to external receiver).
■ Large display with superior visibility.  LED backlight color tone configurable in 10 steps from amber to green.
■ Speech processor independently configurable for microphone transmission and voice message transmission.
■ 20-step expansion of settings range including TX monitor and CW side tone, etc.
■ Operation when pressed now added to existing toggle operation for TX tuning function.

Important note... New 590SG owners are urged to first study the operator's manual.  Also, be sue to become a member of the 590's user group at

Recommended TS-590SG menu configuration:  Default settings as per pages 15 – 19 of the instruction manual except as noted below:


Number Description Default Current
27 Auto mode Off On
31 TX filter ssb/am low cut 300 100
32 TX filter ssb/am high cut 2700 2900
59 HF linear amp control relay off 3
67 & 68 Com speed 9600 115200
 69 Audio input line for data ACC2 USB
 76 Data VOX off on
77 VOX delay 50 30

PWR - Level 90 (to promote longer life of the linear PA)

MIC -  Level 12 when routing outboard processed audio to the 590SG as line level audio from outboard processing gear is typically “hotter” than microphone level audio coming directly from a microphone.   However, when routing audio directly from the microphone to the rig, a microphone level of 38 is about right.

*    Menu 30 is kept in the default position “off” when running outboard processed transmit audio to the rig.  Conversely, when not using outboard audio gear and the microphone plugged directly into the 590, set  menu 30 in the User position “U” .  This enables user definable internal transmit EQ settings programmed via the ARCP-590 software as discussed below.  

Setting up the USB  connection:

Download and install the ARCP-590G software and Virtual Com Port Driver from the Kenwood software downloads page at

  1. Use a type AB USB cable  for hookup to the 590SG.  
  2. Check Windows Device manager to determine which port is designated for the UART and make certain that the the 590 and ARCP-590 software is setup to reflect the correct port, baud rate (preferably 115200).  Transporting tx and rx audio via the USB cable from the computer to the rig works well!  Moreover, no interface device (e.g. RigBlaster) is necessary.

Configuring internal tx eq:

Initially, you may want  to try setting menu 36 set to “Hb1” which often works well  in cleaning up the low end.    Listen to yourself in the 590's monitor to evaluate the results.

Want to fine tune your transmit audio?  Then, try creating your own personalized user “U” defined tx EQ settings with the Kenwood ARCP-590G software.  Again, listen to yourself on the monitor as you tweak your settings.   

Lastly, get comparison “on air “reports between the  foregoing “Hb1” and “U” settings to see which setting is preferred and why.  

Although some hams will disagree, KC5YR recommends keeping the rig's internal speech processor off (except in weak signal conditions).  Adjust microphone gain for only a slight ALC meter deflection showing on voice peaks.    Using the tx  EQ (when properly adjusted) is a far better technique to increase ssb duty cycle (talk power) than using the processor.    This includes breaking a pileup without causing needless IMD.