Don, Thanks. Clears everything up. I did find the key line interrupter. I had it in my Elecraft parts bin not knowing what to do with it when I got it. Now I know.
73, phil, K7PEH On Apr 22, 2014, at 1:43 PM, Don Wilhelm <[email protected]> wrote: > Phil, > > You need to put the Keyline Interrupter on the K3 ACC connector, then use the > RCA cable from the K3 KEYOUT jack to the KPA500. > > If you ordered the KPAK3AUX cable set, you have (or had) the Key Line > Interrupter. See > http://www.elecraft.com/manual/KPAK3AUX%20Cable%20Set%20Instructions.pdf. > > The KX3 must use the KeyIn of the KPA500, so the K3 must also use that same > keying scheme - the KPA500 has a conflict if both the KeyOut-LP line in the > ACC cable is connected at the same time as the RCA Keying cable from the K3, > and that is where the Keying Interrupter comes in. > > 73, > Don W3FPR > > On 4/22/2014 4:15 PM, Phil Hystad wrote: >> Fred or others... >> >> I am still a little confused on the diagram in KE7X's KX3 book about hooking >> up the KX3, K3, KPA500, and KAT500. My question regard the hookup diagram, >> figure 9.17, on page 147 on the KE7X KX3 book. >> >> Confusion is about keyline hookup. The diagram shows that both the K3 and >> the KX3 must be wired together (via a Y-adapter) in controlling keyline. >> Also, that a keyline interrupter is used in the KPAK3AUX cable between the >> K3 and the KAT500. >> >> Question: what is a keyline interrupter? Is this something I have (KX3 >> cable kit) or is this something I make? I presume that this is used to >> block the keyline signal on the AUX cable thus forcing use of the K3 keyline >> connection directly. Confirmation on this please. >> >> Question: if the K3 must be off when I am switched to use the KX3 driving >> the KPA500/KAT500 then why is this extra keyline hookup needed on the K3? >> I mean, if the K3 is off, what function does it supply. If the K3 is on and >> the KX3 is off then why not allow the K3 to control keyline via the AUX >> cable as it is doing right now (in my K3-KPA500-KAT500) configuration. >> >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
