I have a strange problem - the buttons don't work as expected. For example, the A/B (B SET) sometimes acts as ATU TUNE, second attempt works as expected. The same problem appears on my KPA500. I

Mine failed as well, sent my K3s to Elecraft (this was pre-Chinese virus) and they replaced the IO board and sent the old one back. I found a couple of fried diodes or trannys, Elecraft said the RS232

You might try a post on Elecraft's reflector. Wayne has responded to several posts there this weekend, as have at least two other Elecraft people. 73, Jim K9YC

Thanks for this Keith. I am certain there is a board level fault as swapping the suspect KSYN3A into a K3S moves the fault there. Then K3 is then fine, other than the 30% chance it will turn on

Do you happen to have a K144XV 2meter unit with the RefLock board? If so, change R12 on the KREF3 to ~51 ohms. This boost the signal that can be on the fringe when going to the KSYN3"A". Usually

Most likely, the serial to USB chip has failed on the KIO3 board. Seems to be relatively common. Recent reports seem to indictae they are doing component level repairs for that. 73, Drew K3PA

My USB port on the K3s has apparently failed. No communication between the computer and the K3s using the utility. I changed the USB cable still dead. I switched to the RS232 using a USB to RS232

* On 2021 18 Jan 10:01 -0600, john ni0k wrote: There is Hamlib and its rigctld daemon that strives to be radio independent. It's quite easy to run rigctld on the Pi and access it from other apps on

There are, I'm pretty sure, free tools to do just that on Linux. "socat" looks like it might do it. That said, I've written a server that puts a bunch of serial and USB-serial devices in my shack onto

Yeah, we all know the K3 is dead but there are a lot out there. Has anyone thought of translating the CAT commands from a serial interface to IP? Seems like it would be fairly easy with a Pi. --

My advice......for what it is worth. I strongly object to the use of any DC power distribution for any transceiver. This is regardless of the brand, type or rating of the DC power strip.

Unfortunately it hasn’t. I sense a timing issue during start-up. 73, Colin

Your reseating the boards and connectors may have cleared the ‘deafness’ as well. Time will tell. Stay safe and well!! -- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX!"

Thanks Mike. It is saying 13.8V on VFO-B and from an Astron. Drops a bit on TX owing to a Powerpole plugboard, but I’m not going onto TX for this issue to show. 73, Colin

Hi Colin, Glad to hear you’ve had some success with this issue. One more easy thing to check: what input VDC value does the K3 report? I had some other issues related to my power supply and DC

Thanks Mike. I have now swapped the two boards over, and then with one from another k3 and the fault has disappeared with it. The next most obvious step is to look at the other voltage

Reseating all the TMP connectors might be worth trying. I had some odd behavior in my K3 that this corrected. -- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX!"

My K3 SN 8801 sub RX is not functioning and I have tracked it down to no LO input from one of the KSYN3A boards. Its regulator is giving 5V but the green LED is not showing. The same LED is bright

Very interesting project and results.   From the K4 site.  See the link below. 73 Bob, K4TAX http://lea.hamradio.si/~s53ww/TX%20noise/TX_noise.html 73, Martin, OK1RR Dne 17. 01. 21 v 11:13

I use two non-powered computer speakers on my K3S. These are positioned above the radio, on a shelf, about head high when I'm seated in my chair. The AF GAIN via the CONFIG menu is set to