Elecraft KX2 w/KXPA100 CAT control issues

I have excellent results with WRL cat control and my IC-705 and decided to try it with my Elecraft KX2 that is connected to my Elecraft KXPA100 amplifier.

No matter what I try I cant get it to be reliable. After initial connection if I try change VFO it takes like 15 seconds if at all to catch up and sync current frequency. Another example is if I go to spotting and double click on a station to automatically change over to it there is anywhere from a 12-15sec lag before it does if it even works at all.

The KX2 as well KXPA100 amplifier have baud rate of 38400, device usb port is set to 38400 as well and also WRL cat baud rate the same.

I also tried taking the amplifier out of the equation and only use the KX2 transiever but the same issues occur.

Anyone ran into this issue of have solution as I really enjoy how well it works on my IC-705.

73

N0CKL

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@N0CKL Thank you for reaching out! I would love help you with this. Is there any way you could record a quick video showing the issue and send it over? Thank you, and 73!
Andy N0APX
WRL Product Manager

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Thanks Andy!

I just recorded two short videos. First one showing all settings and ect.

Second was example.

Where do I send videos to?

Nick

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You can send them to me in a DM here, if possible. Do you have links, or do you need to send the whole file?

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The issue was handled very quickly with excellent communication and software.

Now my Elecraft KX2 is working flawlessly with the CAT control.

Hats off the the excellent team at WRL! :clap: :clap:

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Woah thanks for the kind words @N0CKL and great work @N0APX !

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I have the same issue and reported it in May, but I haven’t heard anything other than that they are working on it for the KX2. I am sure they are busy with all the different radios.

What was the fix? This is one of my main POTA radios.

Thanks for any advice!

This is what I sent in for reference to see if you had the same issues.

Time: 2026-05-28T18:24:14.590Z
Platform:
AppVersion:

Details: I have an Elecraft KX2. I am trying to use the new CAT control for the desktop app on a Microsoft computer running Windows 11. Device Manager shows the KX2 on port 6, and I have selected that for the CAT control. However, when I connect, the CAT control auto-switches to port 4 when I select “Connect” in the app. I have confirmed the baud rates are good, and it works flawlessly with WSJT.

Any suggestions?

Thank you,
John Taylor W2BJ
FullStory Session URL: no fullstory session available
Membership Status: LIFE

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@W2BJ Download the latest version of the World Radio League Desktop App (v0.1.8), and give it a shot. Let me know if that works for you!

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Andy Thanks!

Yep, I have Desktop Beta v0.1.8, and it lags to the point of being unusable. Tried WRL Cat Control 1.1.3 and then tried to sync with the web logbook; better results. Takes between 5 and 20 seconds for the radio to sync to a new frequency. Sometimes more, depending on the spotting app syncing.

The irony is that another vendor that rhymes with Sam Radio Deluxe is almost instantaneous. LOL. Committed to WRL, but the only radio that is a bit slow is the KX2. All my others are flawless with your apps. The settings work, but it’s slow. I may just be expecting too much from an older radio.

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Have you double checked the RS232 baud rate on your kx2 is set to factory 38400? As well usb com port and WRL cat control also matches 38400?

My KX2 paired to KXPA100 amp works perfectly with instant mode/frequency change now with WRL cat control.

Usb port (data bits 8, Stop bits 2)

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Hmmm…Interesting. Can you send me a screenshot of your configuration in the Desktop App?

@W2BJ this sounds like a baud rate configuration mismatch. Try the settings mentioned by @N0CKL

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