[Elecraft] Kat500

[Dick Dievendorff]

There’s a configuration choice to enable antennas based on band.  See the KAT500 Utility , configuration, enabled antennas.
Maybe the previous owner disabled some antenna connectors.

73 de Dick, K6KR

> On Jun 21, 2025, at 09:08, Eckhart via Elecraft <elecraft at mailman.qth.net> 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
> 
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