[Elecraft] KX3 out of band TX inhibit

[Don Wilhelm]

Oliver,

Did you buy a used KX3?  The prior owner may have requested and 
installed the MARS software which opens up transmit to non-ham band 
frequencies.
Contact support at elecraft.com to find out how to restore normal US band 
limits.

73,
Don W3FPR

On 11/7/2018 9:05 PM, orbarrett wrote:
> Hi all,
> 
> Several years back there were discussions about how to limit KX3 transmit
> capability to the regional ham bands applicable to a KX3 user.  As a USA
> user, I wanted to revisit this topic to see if my recent firmware (v. 2.76)
> allows enforcement of these limits.  On page 42 of the KX3 manual, there is
> a reference to the BND END message that is supposed to appear if I transmit
> out of the ham band in my radio, however it puts out full power in CW mode
> (using a dummy load) at 2.5 MHz for example with no displayed message.  I
> can use the TX Inhibit control line (via the ACC2 connector) to prevent TX,
> but would also like software enforcement.
> 
> Could someone please clarify whether ham band TX enforcement is available
> for my KX3?