[Elecraft] K3 Macro to control KEY OUT

[Joe Subich, W4TV]

> I want to disable the KEY OUT from the K3. I can use the DIGOUT1 and
> an external relay to do that, but it would certainly be cleaner to
> just disable the KEY OUT circuit. I find no command in the
> Programmers  Manual to do that - am I missing something?

You *CAN NOT* disable Key Out.  It is a hardware output from the T/R
circuit (7R line).  Since 7R is high when the receive is on and low
when the receiver is off/muted there is *no way* to selectively disable
Key Out (see page 3 of the current schematic set).

This issue has been beat to death here ... it is a design feature of
the K3.

73,

    ... Joe, W4TV


On 5/31/2011 2:13 PM, Bill Myers wrote:
> I use a macro to control my external amp (not a KPA500).  One macro reduces
> power to the drive requirements of the amp, the other increases the power to
> 85 W when I don't need the amp.  When I activate the 85 W macro, I must
> disable the amp or it gets hit with the 85 W sending it into the protect
> mode.  I want to disable the KEY OUT from the K3.  I can use the DIGOUT1 and
> an external relay to do that, but it would certainly be cleaner to just
> disable the KEY OUT circuit.  I find no command in the Programmers Manual to
> do that - am I missing something?
>
> Bill K6IFF
>