[Elecraft] KPA500 / KAT500 and W2 watt meter question

[Jack Brindle]

Key line interrupt would probably not be a good way since the transceiver is still transmitting, but at a lower level. All key line interrupt does is to disable the amplifier.
I would think a better way would be to use the K3’s inhibit input signal if you really need no tx power coming out.

Note that this has been handled in many, many stations to this point with few (or no) issues.

73,
Jack, W6FB


> On Oct 12, 2023, at 10:32 AM, Andy Durbin <a.durbin at msn.com> wrote:
> 
> "In the KAT500 manual, page 5, Figure 1 Cabling Diagram, is the better and safer way to configure the system.  NO key line interrupter is needed.
> 
> How does an Elecraft station that controls KPA500 and KAT500 using AUX cables inhibit keying when a SteppIR antenna is moving the tapes?  This protection must be provided or element tapes and brushes can be damaged.
> 
> Andy, k3wyc
> 
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