Hi Jack Thanks for the detailed reply. Yep, I am aware of all the RS232 gotchas with the KRC2. :) I have mine wired to handle the handshaking as well.
Making the KPA500 a Passive listener should be just fine. I can then also watch the amp on the RS232 port separately. 73, Mike va3mw On Thu, May 22, 2014 at 2:54 PM, Jack Brindle <jackbrin...@me.com> wrote: > Mike; > > First, the KPA serial ports are _not_ pass-through. Each has a specific > purpose and don’t actually work together. > > How you set up the XCVR serial port connection depends entirely on whether > there is a computer in the > situation or not, and whether that computer polls the radio for > information. Since this is a remote base, can we > assume that a computer is involved and it is getting info from the radio? > If so, then you need to set up the > KPA500 so that it simply eavesdrops on the conversation. You will need to > fabricate a Y adapter for this. In > the case of the KPA all signals can go through, but realistically you only > need pins 2, 3, 5 and (I believe) 8 > connected. Pin 8 is the handshake pin for the TS480, and is needed to > allow the radio to send data on the > RS-232 port. It does not need to be connected to the KPA500 port, but if > it is the KPA will simply ignore it. > Note that the KPA does not make a connection to that pin, so if you set > the station up without a computer, > you will need to provide +12V for that signal to allow the TS480 to talk. > > As the manual indicates on page 12, there are three menu items involved > with this situation. You will > need to set the RADIO item to SERIAL, then set the RS232 X item to the > appropriate data rate. Finally, > since the computer is polling the radio for data, set SER POLL to OFF. If > there is nothing doing the polling, > you will need to set this item to ON to allow the KPA to do this task. > > With this setup, things should work just fine. But we aren’t finished, you > did mention a KRC2, so let’s discuss that. > > I would suggest inserting the KRC2 in between the TS-480 and the KPA500. > Make sure that only pins 2, 3 and 5 > go to the KRC2 ports. That pesky TS480 handshake signal should not go > through the KRC2 without making > changes inside the KRC2. What changes? Disconnect the W jumpers for the > handshake pins and then jumper > across the connector side of the pins so that the signal gets passed from > one DE9 to the other. Then set the > serial port data rate jumpers for the appropriate rate. The KRC2 can do > 4800, 9600 and 19200 bps with the V1.6 > firmware. You probably want to run as fast as you can on the serial port, > which means 19200 bps. > You can then plug the serial port cables into their appropriate connectors > and try things out. > > Be sure to check to make sure that pin 8 is the handshake pin needed for > the TS480. I think it is that pin, but > will need to check it. Also look at the KRC2 manual for the proper W > jumpers. I’ll also take a look and privately > email you what I come up with. > > Your station should work quite well in this configuration. Good luck! > > 73, > > Jack Brindle, W6FB > Elecraft Engineering > > > On May 22, 2014, at 7:38 AM, Michael Walker <va...@portcredit.net> wrote: > > > All > > > > My remote base runs on a TS480 and I will be adding a KPA500 to the mix. > > > > In going over the documentation, I find that there is very little detail > on > > actually interfacing on the RS232 port. From what little I can read, I > see > > it is as simple as plug it in and go, or am I missing something in the > > configuration. > > > > Can I pass RS232 signal through the Amp or is it a passive listener and > > handles band changes. > > > > I will also be using a KRC2 to change filters and antennas in the same > > solution. > > > > Mike va3mw > > ______________________________________________________________ > > 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 > > Message delivered to jackbrin...@me.com > > ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
