[Elecraft] WSJT-X Disabling TX INHIBIT on K3S
Dave B
g8kbvdave at googlemail.com
Thu Nov 15 04:39:23 EST 2018
I've not checked in detail what PTT inhibit the KX3 has, but I have
tripped it up on one occasion in the past, but I forget how how I
un-tripped it!
Certainly in some circumstances an external "interlock loop" could be
useful to have, or a key switch on the front!
On my TS870s, Menu 27 set to ON, utterly disables the front panel TX and
Tune buttons, and both the Mic PTT, Aux TX line, VOX and the CAT TX command!
It's state is remembered when powered Off too, so is useful if you have
kids (or cats) in the house and when developing custom software that
will use the radio.
(The Aux port TX line needs to be used, so as to route digi-mode audio
from that port to air, and mute the Mic.)
Many Kenwoods also have a "feature" that if the Mic PTT is active when
they are powered up, they will not TX, but locks out the transmit
ability. Many have been caught out by a faulty Mic that way!
I don't know, but maybe Elecraft have implemented that last one, I've
not tried that on the KX3. If I remember, I'll try later.
I do know that if you momentarily feed the KX3's Mic jack's PTT line a
+ve voltage (I forget exactly, but somewhere greater than +3V) it will
power up the radio from the OFF state! Very useful for a QRP remote.
Once "awake" the PTT line works as normal. A CAT command is used to
power down the rig when you're done.
73.
Dave G0WBX.
On 15/11/2018 02:13, elecraft-request at mailman.qth.net wrote:
> Without an eternal control line (inhibit), the Kenwood TX Inhibit
> is more like the Elecraft Test Mode (allows operation but no RF
> output). I'm looking for that external control.
>
> 73,
>
> ... Joe, W4TV
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