Don, I've had the same issues with a KRC2 I built some time ago. I've also tried the same things -- two different USB-to-serial adapters, and a hardware serial port, all to no avail. Interestingly enough, I can re-flash the KRC2 with it's firmware, but not use the configuration utility to change the band map. In my case, I wanted to set it up to 3-of-8 (instead of the default 1-of-8) encoding, to drive an Ameritron remote antenna switch.
Elecraft's support tried to help me, including offering to look at high-res pictures of both sides of the PCB, but nothing ever helped. My plan now is to order the Ameritron control box, that will take 1-of-8 and convert it to 3-of-8 encoding. That way I can use the KRC2 to convert from the K3 Aux bus, and the Ameritron box will take it from there. I've searched this list from time to time, looking for others with KRC2 questions, but not seen any (could have missed them, of course). As an electrical engineer and computer maven from way back (too far back to admit, I suppose), it bugs me that I've never been able to root cause the issue, but I've also not really had (or taken) the time to deep-dive it, either. Hope that helps (or at least opens the conversation again, and maybe someone else will have something concrete to contribute), -- Dave, N8SBE On 9/4/2011 2:18 PM, Don Sandstrom wrote: > I need some help on the KRC2 I just built for use with my K3. I have the > auxbus connection set up and the KRC2 responds fine to the band settings > of the K3--turns on the relay drivers for each band and also the ACC > drivers follow the K3's KRC2 config menu settings. The KRC2 also passes > the push button tests in the manual. > > However, I want to change the band map of the KRC2 using the Elecraft > KRC2 Configuration Programmer Software. I find the instructions for the > s/w--on the Elecraft web site--as well as the KRC2 manual pretty cryptic. > > With the PC connected to the KRC2 PC port, and the slide switch in the > DL position, the s/w KRC2 Config window pops up with "KRC2 Firmware = > 1.5;". Simultaneously, but underneath that window I get the "Error > connecting to a KRC2...No KRC2 found. ..." window. After closing both > those windows, a try of the "Send To KRC2" button reports "Last Send > Failed!". > > Does anyone have experience with this? Besides the slide switch, are > there any jumpers in the KRC2 that need to be set? I have jumpers 9-23 > all installed, and jumpers 1-8 all open. > > I'm guessing the "KRC2 Firmware = 1.5" report implies the PC is > communicating with the KRC2. So why the "No KRC found." report? > > I've tried this with both a USB-serial converter and a hardware serial > port with the same results. > > Any help appreciated. > > 73 - Don, W7VXS > ______________________________________________________________ > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
