KX3 out of band TX inhibit

[orbarrett]

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?
Oliver Barrett KB6BA





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[Ken G Kopp]

Hi Oliver,

Probably the best protection for you is your knowledge of the Part 97 rules
you professed to know to qualify for your license.

73 !

K0PP

On Wed, Nov 7, 2018, 19:06 orbarrett <[hidden email] 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?
> Oliver Barrett KB6BA
>
>
>
>
>
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
> ______________________________________________________________
> Elecraft mailing list
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

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[orbarrett]

Should clarify that my KX3 application is for an unusual transverter setup
that uses direct CW transverter keying that doesn’t involve the KX3, which
is just used as a receiver.  I just wanted additional insurance against any
TX power getting into the transverter RX output as result of hitting the KX3
XMIT button by mistake (my other transverters that I’m accustomed to are
bidirectional and do use the KX3 XMIT button).

Oliver



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[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 [hidden email] 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?

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