The KAT500 can be set to restrict antenna by bands. Prior owner may have only had one antenna and restricted its use to ANT1. Download the KAT500 utility from Elecraft. It will show current configuration and allow you to change it.
73, Ken WA8JXM On Sat, Jun 21, 2025 at 12:07 PM Eckhart via Elecraft < [email protected]> wrote: > Hello > > I aquired a used KAT500 for use with ma K3S/KPA500. > Even after a software update the tuner will not allow a changing of the > antenna. It stays on ant1. > The same, when operating from the utility. > Any ideas what this may be? > > Eckhart Neumann > DK2LJ > > ______________________________________________________________ > 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] > ______________________________________________________________ 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]
